no longer an exclusively vicarious one.

Sunday, March 27, 2005

there's no-one here be-side me-eeee

only cos nowadays there usually is.
we set up our two computers next to each other, so when im on one, yonny's on the other (because she's always on at least one).
yes. it is awkward.

so.

this whole long weekend thing is kinda cool. what really pisses me off is that we have to go back to school for 9 days, then we have another 2 week holiday. im not complaining about the extra holidays, just about the school in between. if i wasnt in year twelve i would just conscientiously object and not go.

so anyway. in other news, family BBQ last night was pretty funny. everyone was talking about how many assignments they already got, then all heads swiveled in my direction and they were like, "hey mel, you got any assignments yet?"
i felt like laughing in their faces. that sort of thing is what causes hysteria.
they looked at me funny then i go, "erm. yr 12 is one loooong assignment"
and everyone just gives each other the "oh poor mel, she is too stressed out" look.
geeez.
or as my sis has suddenly started saying:
"geez louise!"
which is yes, kind of odd, and yes, kind of disturbingly scary.

also.
bec and i have created several monsters in the form of ploy and mary. they used to be quite normal, kind of dysfunctional, and they used to ignore us everytime we talked about anything that interested us. then one day. (bom-bom-boooom)
they. discovered. tripod.
*flashes of lightning and an evil voice going "muaha-muaha-muahahahahhahaha"*
yeh. now theyre obsessed.

example #1:
divz: hey lets all make toasts for bec's birthday. ploy you go first so i can go last.
nat: divs that just means you'll have to make up a really good one to outdo everyone else.
divz: oh. wait hang on-
ploy: um. i love you becsy, but i love gatesy more.
mel: AAAAAAAARRRGGGHHHHH!!!

and then the truth hit me. we created monsters, obsessed with tripod.
ploy says she wants to marry all of them. sigh.
mary says her theme song is "always get into stuff":

"always get into stuff" by tripod.

Scod: I always get into stuff,
Just as it's finishing being cool.
I'm never quite brave enough,
To take a chance on something new.
That's for someone else to do,
Tripod: Oo-oo-ooo-oo.
I'm never too far behind,
I follow the trends.
But I never take any risks,
I'm not ahead of the pack.
I'm just with the pack,
Towards the back.
Scod: I know all about moshing,
They do it in pits.
I'm really quite the Pearl Jam fan,
I just bought their greatest hits.
Tripod: Oh, I'm thinking of getting a nose ring,
Now that I've seen one on Neighbours.
Oo-oo-oo-ooo-oo.
I always get into stuff,
Scod: Just as it's finishing being cool.
I got a razor scooter out the back
Which I bought in 2002
Oo-oo-oo-ooo-oo.
Ooo-oo-oo-ooo.
Scod: Taking a chance
Thats just not for me,
If there's four levels of cool
Then I'm on level three
It goes: freakishly cool people first
Cool people next, then there's me
Tripod: And then my mum
Yeah-yeh-yeh.
Neh-nehnup neh-ne
Yeah-yeh-yeh
Neh-nehnup neh-ne
Yeah-yeh-yeh
Neh-nehnup neh-ne
Yeah-yeh-yeh
Neh-nehnup neh-ne

I never try to set the trend,
Gatesy: 'Cause I've been hurt before.
Tripod: The only time I went out on a limb,
Gatesy: It didn't work out for the best.
Tripod: A bandanna round my chest,
Over a vest.
Tripod: I always get into stuff
Just as its finishing being cool
Taking such big fashion risks
Thats for rock stars to do
You can afford
To wear whatever you like
When you get that much poontang

Do you like that word?
Poontang
I think its cool
What do you think?
Me neither!


hehehe.

smell yas later.
wakes.

Saturday, March 26, 2005

you're our only hope

which is not, as you may have thought, a line from star wars, but is in fact a line from the lion king.
nala: simba, you have to return to the pridelands, you're our only hope.
or some yotz like that.

happy birthday to be-ec
her place is cool. they have a frackin music room with like 2 pianos. in the same room. i tell you its flipping mental.

and. erm. so.
stargate atlantis is coming. i dont wanna watch it. i think im spending too much time vegetating in front of the telly. not that theres anything wrong with that but i have the sinking feeling that it is wrecking my two remaining eyeballs big-time. and everyone else seems to have this mistaken belief that i should be doing something "constructive" with my time. like what? building model aeroplanes (not that there's anything wrong with model airplanes, i just think its a little bit of a waste of time - yes i can talk).

and. i dont think ill go to the easter show. after nat referred to it, i went to my sis' blog and realised that i really dont wanna go if its anything like what she claims it is. hasnt that purple dishwasher noticed the invention of the punctuation mark? although she actually does talk like that so i suppose she may have a point.

oh - purple dishwasher. i think it was ross noble on the glass house, and the article was about an englishman getting upset because of the "racial slur": "pommy git". which, if you think about it, is not really a racial slur at all. its more like a definition. like "aussie bludger".
anyway so ross made the point that the only way to insult people and not be whacked in the arse with a lawsuit for defamation is to call them really stoopid things. so that when they turn up to court and say "so-and-so called me a prancing earphone" theyll just be laughed out of town. its an insult but it kind of makes no sense out of context. hence purple dishwasher.

la-la-la. saw bride and prejudice. hehehehehe. its funny in a sort of painful way. if i was actually indian i think i would just break down and cry at its lame-ness. i think ill lend mary a *classic* bollywood movie and see what she thinks. she seemed to like the single dance sequence in the entire movie, so i wonder what she will think of a continuous dance sequence that lasts 3 hours.

uh-oh.
i can hear heavy breathing.
aaaaaah

gtg.
wakes.
aka - shaking in fear of the evil force approaching.

Monday, March 21, 2005

the *box*

yes that dreaded piece of plastic and tubing.

anyway. so yesterday i watched this really good movie on sbs. it was about the last stand of napoleon and how he didnt really die on st helena. it had richard e grant in it. o. i love richard e grant. hes sooo funny to watch cos he is so full of it.
the point is this: sbs has some good stuff.
the only problem is that you have to risk the horrors of wading through ridiculous amounts of porn to find the gems of classic world movies hidden under their grimy facade.
not that everyone thinks porn is bad. i just think there are often better things to watch on the telly than some smelly old people getting it on in full view of the public. you know?
in a similar fashion, i switched to kerri-anne or whatever her name is and saw robson green. she was interviewing him and although she is a fahrbot interviewer who has little to no actual personality and asks the most boring and irrelevant questions imaginable, the fact remains that she had robson green on her show. (robson green is a really cool actor on wire in the blood - abc april 1). so, as on sbs where you have to wade through porn, on kerri-anne you have to wade through lots of thinly veiled advertising for stuff like knives that can cut through cars and shit.

anyway. enough with mels theory of tv
im gonna go play something.
wakes.

Thursday, March 17, 2005

random whinge #1

i wish i knew how to rearrange stuff on this blog. the layout is starting to piss me off.

Wednesday, March 16, 2005

the sister.

like, as in the title of a horror film. imagine shrill screeching violins and a crescendo of organ music accompanied by the bom-bom-bom thudding percussion of, say, a timpany.

the words roll up the screen, a-la star wars:
a long time ago in a bedroom that i wish was far, far away...
It is a period of civil war. Rebel fighters, striking from a hidden base (read: my bedroom), have won their first victory against the evil Galactic Empire (read: well, guess...).
During the battle, Rebel spies managed to steal secret plans to the Empire's ultimate weapon, the Death Star, an armored space station with enough power to destroy an entire planet.

hm. instead of "an entire planet" maybe i should put...my entire life?.
yes. star wars metaphor.
ah. the joys of being slightly geeky.

the point is this:
my.
sister.
is.
insane.

yup yup. she is totally fahrbot. she runs around the house screaming at the top of her lungs, whinges about how its not fair that she never gets *anything*.... screaming about how she is so cool but we're holding her back from being *really* cool and talking constantly on the phone to people i only hope are simply nerdy techies.
oh such fun living in my house.

prime example #1:

the blurb: that new-fangled piece of hastily assembled plastic and LCD tht goes by the very chic, very modern name of "ipod" is distributed to the common commercial market.

Scene 1. at home.
darth yonny: mum i want an ipod. my life is over without it!!!!. (emphasis on the exclamation marks)
mum: how much?
darth yonny: [some ridiculously big amount]!!!!!!!!
mum: err....no.
darth yonny falls to the floor and trembles in anger. when everyone just ignores her she gets up, stomps away and locks herself in the computer room with the door slamming shut. she realises it wasnt quite loud enough, so she opens it and slams it shut again, more loudly, under the pretence that it didnt close properly the first time.

Scene 2: at someone else's house.
darth yonny and a miscellaneous and badly cast *friend* are talking surreptitiously in a corner, however their voices are raised just enough so that everybody in the entire neighbourhood can hear what they are saying.
darth yonny: yeh. omigod. yuleh. like, and like and yeh. (etc. you get the idea)
friend: i know...
darth yonny: what-ever i said to him if he was gonna be so mean to me...
friend: hmmm..
darth yonny: anyway (raising voice) i think its so mean that i cant get an ipod, theyre not that expensive.
parents look over and sigh.
darth yonny: yeh dad youre so mean this is the only thing ive asked for this week ever. and you cant even get it for me. everyone has one and they are soooooo cool and there are lots of pretty colours like...white. i want one otherwise im just going to die.
silently everyone wonders why she just doesnt keel over already.

Scene 3. at home.
after much nagging, whinging, sulking and emotional blackmail, (i will call it "the force" with a lower case "f"), darth yonny uses her evil and twisted powers to achieve her own ends.
the blonde friend: where does the cold air in an aircon come from?
darth yonny: o-hahaha. joke!
the blonde friend: no. really. how does it blow out cold air?
darth yonny: oh. theres a little doodad in the machine that makes the air cold then it comes out again.
the blond friend: o-kay... so then where does the cold air in a fan come from?
everybody: [nervous laughter].. a joke!
the blonde friend: no really. i mean, theres no machine like in the aircon. how does it make cold air?
darth yonny: ever been on a rollercoaster? when the air is moving really fast past your face? yeah thats the same like in a fan.
the blonde friend: but that doesnt happen on hot days....
darth yonny: .
the blonde friend: anyway. so my mum is getting me a new ipod so i dont really want my old one cos the battery is slightly dodge. you want it?
darth yonny: yes!
the blonde friend: o-kay. here you go.

so now the evil sis master has the ultimate in high-technology powered machinery.
things are o-kay for about 3 days. then in a move so stupid as to adequately defy belief, it begins again, for the evil ways of the force and the hunger of greed can never be sated.

scene 4. at the dinner table at home.
darth yonny: yuleh. i want an ipod mini.
the chorus: how much? (beat) no.
darth yonny: fine then.
the chorus: (looks up very surprised)
darth yonny: i want a creative 10 gazillion (or equivalent number) gig memory mp3 slash ipod wannabe hand held doodad.
the chorus: (looks up in disbelief, hands falling off the sides of the table, slowly losing grip of reality. the tinkling of falling cutlery can be heard) NOOOOO!!! its not true! its impossible!!

and so the mighty but evil power of the force once again takes hold of the universe, dooming it to a future of opression, violence and servitude on the threat of physical pain.

get it now?

wakes.

coin-operated boy. dum. dum.

can you believe that jess and caz were singing this song without understanding what it meant? hell, even my sis got what it meant after a few listens of the chorus.
caz and jess were so stunned when they realised what theyd been singing, they thought it was the dirtiest song ever. like looking at the cover art for half an hour didnt give them any ideas.
geez...

and.
someone *evil* (read: my dad) has been eating all the red rock deli chips in the house. seriously. without asking if anyone else wanted anymore. thats just mean.
anyway so i confronted him, with my sis for backup and asked him if he knew who had eaten the chips cos i hadnt and yon hadnt and mum doesnt eat them, sort of obviously pointing the finger at him in a semi-polite way... and he flat out denied it..
geez.
oh well. next time i open a packet it is staying in my room until I have finished with them.

erm
chem prac test. lets not talk about it. i liked half and fully destroyed the other half. seriously, usually i dont mind getting tests back, i mean what can i do about it now anyway. but i kinda never want to see that piece of paper again. ever. soo embarrassing.

sigh. im getting embarrassed by a weirdo test score.
my life is over.

as they say in that atrocious "song" ( i emphasis atrocious here)
"no you don't know what its li-i-ike"

oh just leave me with my self-indulgent pretension willya?

wakes.

Tuesday, March 15, 2005

le inquisition

in other words:
questions to which i would be delighted to have an answer to because theyre really starting to bug me:

a) why does the text of this blog come at the bottom? and not at the top where it should, and where everyone else's does

b) why, oh why (heeh i always wanted to say that) did margaret and david move from the sbs to the abc. they smell, and the pretension, oh the pretension. what was aunty thinking?

c) who were those people who took over jay and the doctor on monday morning? i realise that the frenzal boys are not what anyone would call the epitome (oh just look it up already) of good breakfast radio, but at least they can accept it and do whatever life has asked of them. these guys were so annoying i wanted to get a really big hammer and smash all the radios in the house

d) i hate school. hey it may not be a question, but it is a totally valid statement. and no i do not want everyone to tell me why i hate school. its just a state of affairs that may be questionable, but there is really no point in wasting the time and energy on asking why. like why avril lavigne is popular or why the earth turns the way it does.

e) erm. hang on there are loads more in here i just cant remember. in the meantime, here's one from my sis: "why can't i have a *cool* sister???" kinda self-explanatory i would have thought. i mean really, when your definition of "cool" is someone who hangs in the city or at hurstville 24/7 and has a thousand techies as ex-boyfriends and wears pants that fall down to shame even plumbers, and tops that look like they are going to explode and hair that is totally straight, but falling apart like straw because of all the chemicals smeared over the scalp every spare weekend and can recite the current top 40 "hits" that are practically all generically engineered sound bytes that were designed, made, produced and sold on a piece of machinery with frell-all human interaction and that sounds like air passing through a freakin kazoo.....
i dunno why she thinks im not "cool". really.

oh and one final one for today, folks:
f) why did i decide to do extension 2 english, but more to the point, why did i decide to do extension 1 maths. stoopid. stoopid. should never have reached above my abilities. i am going to stuff up this test sooo badly i just know it. and dont tell me to stop wasting my time writing this thing when i should be studying..... you think that will solve all my problems? seriously. if i dont know this dren by now there is absolutely no chance that i will be able to learn it before thursday. frack frack frack frack frack frack frack.

im gonna go pig out on red rock deli chips. this is not some sort of paid-for plug. ahhh the insidious nature of current advertising. no they are just nice-tasting potato chips. dont try them if you dont wanna. but in my completely unpaid-for opinion, i think they taste nice.

yeh
catchas all sometime later. maybe. or else ill just avoid eye contact and walk past like i didnt see you.

nick off everyone. leave me alone to sulk.

wakes.

a blog!

rite. i set up this site with soo many great ideas and aspirations and dren.
and just look at it. so embarrassing. like the ultimate in nerd-dom
now i got some spare time between exams - (read: my sister is not at home and therefore not hogging the single frelling computer in the house) - my boredom (read: trying to find anything to do besides study for the next four exams) has rekindled my dreams of having an actual blog.
but, after turning on the computer, turning on my music with my winamp that it sooo frelled its not funny, and sitting down with a snack and drink by my side, i have just come to the conclusion that i have no *frelling* idea about what im meant to do.
i mean really. its not like i can look up "blog" in the dictionary. its not like i can go and read the text-type card on the characteristics of the "blog" text type.
so, the solution to any english ext-2 students' writing dilemma - research.
and in the spirit of this great theory "research", i have hacked into my sister's favourites folder and flown around her and her friends' blogs, to see what the "people" are doing on "the street". man.

remarkably, the young people of today can actually write coherently. its di-sturbing how well they elucidate. and i realise something that shifts my perception of the modern world. a blog is simply a better-worded (usually) version of one of those journals everyone was forced to do in kindy. you know the ones that sort of go - On Monday I went to the Zoo to play with the aminals. IT waS fuN. I saW the Lions and Penguins. Then I went hOme.
basically, that is the gist of every single blog that i have seen thus far.

so.
following in the well-trodden footsteps of every ext-2 student that ever was, i will do what it is tradition to do. type up a beautiful summary of the research, reflect on how meaningful the universe is, write a 2 page poem on the state of loneliness and its relationship to the current trend of corporate oppression, and then completely ignore everything i have done and write something totally unrelated.

therefore:

i love little birdy, dont you?
and that new james cameron imax movie looks really good, even if it is blatant patriotic advertisment for that wonderful US institution - NASA.

i just love evryone sooo much it hurts.

wakes.

Thursday, March 10, 2005

chem: ethanol assignment

sorry no pics

Ethanol Assignment

1. At present ethanol is produced commercially from ethene which is derived from petroleum.
i) Describe how ethanol is produced commercially from ethene.
Ethanol is commercially prepared by the sulfuric-acid-catalysed vapour phase addition of water to ethene at 280°C and 30Mpa. The reaction occurs in two steps. First the sulfuric acid adds onto the ethene to produce ethyl hydrogen sulfate. Then the ethyl hydrogen sulfate reacts with water, generating ethanol, and sulfuric acid is reformed.
Step 1: C2H4(g) + H2SO4(g) C2H5HSO4(g)
Step 2: C2H5HSO4(g) + H2O(g) C2H5OH(g) + H2SO4(g)
Overall addition: C2H4(g) + H2O(g) CH3CH2OH(g) DH = -45kJ molL-1
ethene water ethanol

ii) Write a structural equation for the production of ethanol including the catalyst




2. Ethanol can be readily converted to ethene.
i) Write an equation for this reaction.
(dehydration)
CH3CH2OH(l) C2H4(g) + H2O(l)




3. Ethanol can also be produced without using petroleum products.
i) Describe how ethanol can be produced from sugars.
Yeast is used to convert the sugar into ethanol. The yeast derives energy from the respiration of glucose and ethanol and carbon dioxide are released as wastes. Pure ethanol is then distilled.

ii) Write an equation for the reaction.
C6H12O6(aq) 2C2H6O(l) + 2CO2(g)
sugar ethanol carbon dioxide gas

iii) Name the process in (i)
This process is called fermentation.

4. i) Describe how ethanol can be produced from sugar waste and corn.
This can be done through two processes:
- dry milling. The corn feedstock is ground and cooked in water to produce corn mash. Enzymes such as amyloglucosidase are added and the starch is hydrolysed to form glucose. Yeast fermentation for up to 72 hours produces ethanol. It is then distilled.
- wet milling. The corn is soaked in a mixture of water and sulfur dioxide for 2 days to loosen the fibrous hull. Corn oil is extracted from the kernel, then the starch from the endosperm is extracted and fermented as in the dry milling process.

ii) When and why can ethanol be considered to be a renewable energy resource?
When the process of fermentation is used to produce ethanol, renewable resources are being used in the form of plants that can regrow. As opposed to making ethanol from petrochemicals, a non-renewable resource, using plants is renewable, in that all their energy comes from the sun and photosynthesis.

iii) Where in Australia is ethanol produced from sugar cane or other crops?
All plant material contains glucose and other simple sugars, but they may be locked away in long chains as cellulose and other material. They have to first be released (which can be inefficient), and the cheapest source of plant material depends on the region. In some places roots such as cassava, tubers such as potato and grains such as corn are used. Manildra at Nowra, New South Wales has been producing 90 million litres pa. since the 1990s, using wheat flour from its plant at Gunnedah to produce a range of wheat by-products with the balance of starch production fermented into ethanol. A CSR factory at Sarina in northern Queensland uses molasses and other wastes from sugar cane with the advantage that most of the carbohydrate is already sugar. It produces about 8 million litres pa.

5. Ethanol is currently used as a fuel in Brazil, USA and Canada.
i) Research the ethanol blends in these countries
Brazil: The current Brazilian legislation mandates blending of ethanol in gasoline in the range of 24 to 26 per cent. 40% of automobiles in Brazil operate on 100% ethanol, while the balance use a 22% ethanol blend.
USA: Blending of ethanol in gasoline is done on environmental considerations. Ethanol blending is 10 per cent in gasoline for cities requiring control on carbon monoxide emissions during winter months. Approximately 12% of all US gasoline contains ethanol at a blending percentage of 10%.
Canada: Blends containing 5-10% ethanol in gasoline are being marketed by several companies (throughout Ontario, Quebec, the western provinces and the Yukon), and are available at 1,000 retail outlets across the country. Approximately 5-10% of Canadian gasoline contains ethanol.

ii) Evaluate the success of current usage in those countries.
Brazil: In Brazil, the government has introduced a national, large-scale ethanol fuel program, which uses a 20% blend of ethanol with regular fuels. The use in these blends consumes 2/3 of the country’s sugar cane production and is essentially a farm support program for otherwise unemployed rural workers. Since its launch in 1975, the Brazilian Ethanol Program remains to date the largest commercial application of biomass for energy production and use in the world. It succeeded in demonstrating the technical feasibility of large-scale ethanol production from sugarcane and its use to fuel car engines. Forty percent of automobiles in Brazil already operate on 100% ethanol, while the balance use a 22% ethanol blend.
Fuel ethanol development in Brazil was fostered by concerns about expanding imports of foreign crude oil, and their effects on foreign exchange. Over the last 22 years, hard currency savings amounted to 1.8 billion US dollar/year. However, the 1999 production cost of ethanol was still higher than price of gasoline manufactured from imported oil which was the main reason for the financial difficulties faced by the program. Impressive technological progress has been continuously reducing ethanol production costs, but oil prices still need to be quite high for ethanol to be cost-effective. Socially, the program has been responsible for the creation of 720,000 direct jobs and 200,000 indirect jobs in rural areas
Local air pollution during harvesting season (burning required for manual harvest, use of sugar cane bagasse in the boilers) has been an environmental problem, but the replacement of gasoline by ethanol reduced atmospheric pollution in large Brazilian cities. So far, the Brazilian program has been successful, socially, environmentally and in terms of cost. It has produced a whole other industry for the country to export.

USA: Fuel-grade ethanol represents about 85% of the U.S. ethanol market. It is a clean-burning automotive fuel, and, as a fuel additive, it is also used as an oxygenate. “Oxygenates” are products blended into fuel to improve combustion and thus to reduce harmful air emissions. U.S. development was triggered by concerns about environmental quality, and recognition of the merits of using grains, produced in excess supply in the U.S., to reduce imports of mid- eastern oil. Ethanol is one of the few commercially available oxygenates that can be used to meet the requirement of the Clean Air Act Amendments of 1990 that gasoline be oxygenated in “non-attainment” areas (areas where certain Federal clean air standards are not being met). Most purchasers of fuel-grade ethanol are thus oil companies and fuel marketers that use it to meet this federal mandate. The Clean Air Act Amendments of 1990 mandated the use of oxygenated gasoline in areas with unhealthy levels of carbon monoxide. At the time, the primary oxygenates were ethanol and MTBE. Subsequently, MTBE has been shown to contaminate ground water supplies, and the demand for ethanol has increased significantly.
There are several benefits to using ethanol. It emits less carbon monoxide than gasoline, and adding oxygenates like ethanol to gasoline reduces carbon monoxide emissions. Last year ethanol use reduced US greenhouse gas emissions by 5.7 million tonnes, equivalent to removing more than 853,000 cars from the road. Ethanol is domestically produced and allows us to reduce the use of imported petroleum, supporting U.S. farmers and creating jobs.
All auto manufacturers approve the use of low-level ethanol blends, and although ethanol is more expensive to produce than gasoline, federal tax incentives reduce the price to a competitive level. It is therefore a cleaner and still cost-effective fuel. 85% blends of ethanol are also popular with the 3 million US owners of flexible-fuel cars, an expanding new market.

Canada: At the federal level, the ethanol portion of blended gasoline receives an exemption from the federal excise tax of 10 cents per litre on gasoline. At the provincial level, governments exempt the ethanol portion of blended gasoline from their road taxes, without restriction on the ethanol source or the content in ethanol. The Government of Canada and some provincial governments have also supported the development and use of ethanol fuel through research and development programs.
The energy efficiency of ethanol production from grain (corn, wheat, barley) is higher in Canada than the U.S. because of a much lower dependence on irrigation for grain production in Canada. Analysis in 1992 showed that ethanol made from Ontario-grown corn had over twice the combustible energy content as was used in its production. This analysis involved all aspects of corn production, including input and machinery manufacture and transport. The cost of ethanol-production from grain, at about 35-45¢/litre, currently exceeds the refinery-gate price of gasoline. Although the cost of production of ethanol has declined substantially over time as technology has improved, present price relationships mean that ethanol provides the highest economic value when it is used as an octane enhancer to replace other octane additives - especially additives containing heavy metals, and “aromatic” compounds such as benzene. Ethanol blended fuel is only a voluntary option in Canada at present, but it is a centre for research into new ways of processing biomass for ethanol production. Canadian ethanol blends are currently at 5-10% for regular automobiles.

iii) In USA it is mandated by the government to use ethanol blended fuel.
What is the situation in Australia? Does car fuel in Australia contain ethanol?
Currently there is no government mandate in Australia to use ethanol blended fuel. Federal legislation regulated a 10% limit of ethanol blends as of July 2003 and requiring that petrol stations adequately inform consumers if they are using petrol that includes ethanol. While 10% ethanol blends are available at a few outlets across the country, it is not a popular alternative.

iv) Evaluate the success of current usage of ethanol as fuel in Australia.
Ethanol fuels are not being used in Australia anywhere near as much as they are overseas and so can be seen as unsuccessful. The government's indecisiveness to mandate ethanol blends has impaired consumer confidence of ethanol-blended fuel, while public concern has caused much resistance. In addition, given that ethanol costs almost twice as much to produce than petrol, consumers would be unwilling to purchase ethanol fuel if it is more expensive and is less energy efficient than petrol. Thus, Australia is spending money on using up quickly expiring supplies of petrochemicals, and on foreign imports that are gradually rising in price. Ethanol is being produced, and with the large tracts of land, more cane and wheat feedstocks could easily be produced, but consumer confidence is extremely low and the government has made no move to implement any strategies to incorporate ethanol as fuels

6. Assess the potential of ethanol as an alternative fuel and discuss the advantages and disadvantages of its use.
Ethanol as an alternative fuel has its advantages. It is renewable and can replace the fast-dwindling supply of international petrochemicals. It usually burns cleanly, with minimal formation of particulates, so reduces some pollution, such as hydrocarbons and carbon monoxide. It may also reduce greenhouse gas emissions, but there is still debate on how much. However it also has its drawbacks. Its combustion as a fuel has increased emissions of oxides of nitrogen and acetaldehyde. Its use in over 10% ethanol-unleaded petrol blends has been proven to cause damage in cars not specifically manufactured for the ethanol component. It contains less energy than petrol, so even if the price is lower, more ethanol is still required to move a vehicle from one point to another. And even though it reduces greenhouse gas emissions, fossil fuels are still used as a fuel during the manufacturing of ethanol as well as in the planting, harvesting and transportation of feedstock crops.
Its use in the US is as an additive in the oxygenation of fuels to reduce the pollution emitted in motor vehicle combustion engines. In Canada one of the reasons for its use is because of its ability to restrict the freezing of fuel lines in engines. Brazil uses the production of ethanol to stimulate its economy and to provide jobs for the social benefit of its people. All of these are added incentives to use ethanol as an alternative fuel, but it has only one real outstanding benefit, and that is its status as a renewable resource. Studies are pointing at a very short lifespan for the remaining world petrochemical supply, and so the focus must turn to alternative, renewable fuels that can be adapted to with as little disruption as possible. 10% blends require no change at all in the mechanics of motor vehicles, but as in Brazil, it may be necessary to recalibrate the car fleet to suit any higher blends, eg. the E85 blend of 85% ethanol and 15% petrol, which has also been proven to reduce greenhouse gas emissions by up to 75%.
In a full cycle, using ethanol as a fuel in motor vehicles as well as in its own production, the use of ethanol as a fuel has many advantages over the current use of fossil fuels. And although its benefits do not seem to overly outweigh the benefits of using petrol as a fuel, the fact remains that it is a renewable resource that has the potential to stimulate the agricultural industry and lessen the globe’s reliance on disappearing non-renewable petrochemicals. As an alternative fuel, with more research into efficient ways to its production, ethanol could possibly be a very successful option in the future fuelling of motor vehicles.


7. Pathways 2 pg 39. Data Processing – Exercise on Heat of Combustion.



Resources:
www.renewables2004.de/ppt/ Presentation4-SessionIVB(11-12.30h)-LaRovere.ppt
http://www.bcintlcorp.com/marketprint.htm
http://www.eere.energy.gov/cleancities/blends/ethanol.html
http://oee.nrcan.gc.ca/publications/infosource/pub/vehiclefuels/ethanol/M92_257_2003.cfm
http://www.greenfuels.org/ethacan.html
http://www.ontariocorn.org/ethanol/ethahome.html
http://www.onlineopinion.com.au/view.asp?article=803
http://www.raa.net/page.asp?TerID=146

chem: ethanol assignment

sorry no pics. i just cannot be stuffed.

Ethanol Assignment

1. At present ethanol is produced commercially from ethene which is derived from petroleum.
i) Describe how ethanol is produced commercially from ethene.
Ethanol is commercially prepared by the sulfuric-acid-catalysed vapour phase addition of water to ethene at 280°C and 30Mpa. The reaction occurs in two steps. First the sulfuric acid adds onto the ethene to produce ethyl hydrogen sulfate. Then the ethyl hydrogen sulfate reacts with water, generating ethanol, and sulfuric acid is reformed.
Step 1: C2H4(g) + H2SO4(g) C2H5HSO4(g)
Step 2: C2H5HSO4(g) + H2O(g) C2H5OH(g) + H2SO4(g)
Overall addition: C2H4(g) + H2O(g) CH3CH2OH(g) DH = -45kJ molL-1
ethene water ethanol

ii) Write a structural equation for the production of ethanol including the catalyst



2. Ethanol can be readily converted to ethene.
i) Write an equation for this reaction.
(dehydration)
CH3CH2OH(l) C2H4(g) + H2O(l)



3. Ethanol can also be produced without using petroleum products.
i) Describe how ethanol can be produced from sugars.
Yeast is used to convert the sugar into ethanol. The yeast derives energy from the respiration of glucose and ethanol and carbon dioxide are released as wastes. Pure ethanol is then distilled.

ii) Write an equation for the reaction.
C6H12O6(aq) 2C2H6O(l) + 2CO2(g)
sugar ethanol carbon dioxide gas

iii) Name the process in (i)
This process is called fermentation.

4. i) Describe how ethanol can be produced from sugar waste and corn.
This can be done through two processes:
- dry milling. The corn feedstock is ground and cooked in water to produce corn mash. Enzymes such as amyloglucosidase are added and the starch is hydrolysed to form glucose. Yeast fermentation for up to 72 hours produces ethanol. It is then distilled.
- wet milling. The corn is soaked in a mixture of water and sulfur dioxide for 2 days to loosen the fibrous hull. Corn oil is extracted from the kernel, then the starch from the endosperm is extracted and fermented as in the dry milling process.

ii) When and why can ethanol be considered to be a renewable energy resource?
When the process of fermentation is used to produce ethanol, renewable resources are being used in the form of plants that can regrow. As opposed to making ethanol from petrochemicals, a non-renewable resource, using plants is renewable, in that all their energy comes from the sun and photosynthesis.

iii) Where in Australia is ethanol produced from sugar cane or other crops?
All plant material contains glucose and other simple sugars, but they may be locked away in long chains as cellulose and other material. They have to first be released (which can be inefficient), and the cheapest source of plant material depends on the region. In some places roots such as cassava, tubers such as potato and grains such as corn are used. Manildra at Nowra, New South Wales has been producing 90 million litres pa. since the 1990s, using wheat flour from its plant at Gunnedah to produce a range of wheat by-products with the balance of starch production fermented into ethanol. A CSR factory at Sarina in northern Queensland uses molasses and other wastes from sugar cane with the advantage that most of the carbohydrate is already sugar. It produces about 8 million litres pa.

5. Ethanol is currently used as a fuel in Brazil, USA and Canada.
i) Research the ethanol blends in these countries
Brazil: The current Brazilian legislation mandates blending of ethanol in gasoline in the range of 24 to 26 per cent. 40% of automobiles in Brazil operate on 100% ethanol, while the balance use a 22% ethanol blend.
USA: Blending of ethanol in gasoline is done on environmental considerations. Ethanol blending is 10 per cent in gasoline for cities requiring control on carbon monoxide emissions during winter months. Approximately 12% of all US gasoline contains ethanol at a blending percentage of 10%.
Canada: Blends containing 5-10% ethanol in gasoline are being marketed by several companies (throughout Ontario, Quebec, the western provinces and the Yukon), and are available at 1,000 retail outlets across the country. Approximately 5-10% of Canadian gasoline contains ethanol.

ii) Evaluate the success of current usage in those countries.
Brazil: In Brazil, the government has introduced a national, large-scale ethanol fuel program, which uses a 20% blend of ethanol with regular fuels. The use in these blends consumes 2/3 of the country’s sugar cane production and is essentially a farm support program for otherwise unemployed rural workers. Since its launch in 1975, the Brazilian Ethanol Program remains to date the largest commercial application of biomass for energy production and use in the world. It succeeded in demonstrating the technical feasibility of large-scale ethanol production from sugarcane and its use to fuel car engines. Forty percent of automobiles in Brazil already operate on 100% ethanol, while the balance use a 22% ethanol blend.
Fuel ethanol development in Brazil was fostered by concerns about expanding imports of foreign crude oil, and their effects on foreign exchange. Over the last 22 years, hard currency savings amounted to 1.8 billion US dollar/year. However, the 1999 production cost of ethanol was still higher than price of gasoline manufactured from imported oil which was the main reason for the financial difficulties faced by the program. Impressive technological progress has been continuously reducing ethanol production costs, but oil prices still need to be quite high for ethanol to be cost-effective. Socially, the program has been responsible for the creation of 720,000 direct jobs and 200,000 indirect jobs in rural areas
Local air pollution during harvesting season (burning required for manual harvest, use of sugar cane bagasse in the boilers) has been an environmental problem, but the replacement of gasoline by ethanol reduced atmospheric pollution in large Brazilian cities. So far, the Brazilian program has been successful, socially, environmentally and in terms of cost. It has produced a whole other industry for the country to export.

USA: Fuel-grade ethanol represents about 85% of the U.S. ethanol market. It is a clean-burning automotive fuel, and, as a fuel additive, it is also used as an oxygenate. “Oxygenates” are products blended into fuel to improve combustion and thus to reduce harmful air emissions. U.S. development was triggered by concerns about environmental quality, and recognition of the merits of using grains, produced in excess supply in the U.S., to reduce imports of mid- eastern oil. Ethanol is one of the few commercially available oxygenates that can be used to meet the requirement of the Clean Air Act Amendments of 1990 that gasoline be oxygenated in “non-attainment” areas (areas where certain Federal clean air standards are not being met). Most purchasers of fuel-grade ethanol are thus oil companies and fuel marketers that use it to meet this federal mandate. The Clean Air Act Amendments of 1990 mandated the use of oxygenated gasoline in areas with unhealthy levels of carbon monoxide. At the time, the primary oxygenates were ethanol and MTBE. Subsequently, MTBE has been shown to contaminate ground water supplies, and the demand for ethanol has increased significantly.
There are several benefits to using ethanol. It emits less carbon monoxide than gasoline, and adding oxygenates like ethanol to gasoline reduces carbon monoxide emissions. Last year ethanol use reduced US greenhouse gas emissions by 5.7 million tonnes, equivalent to removing more than 853,000 cars from the road. Ethanol is domestically produced and allows us to reduce the use of imported petroleum, supporting U.S. farmers and creating jobs.
All auto manufacturers approve the use of low-level ethanol blends, and although ethanol is more expensive to produce than gasoline, federal tax incentives reduce the price to a competitive level. It is therefore a cleaner and still cost-effective fuel. 85% blends of ethanol are also popular with the 3 million US owners of flexible-fuel cars, an expanding new market.

Canada: At the federal level, the ethanol portion of blended gasoline receives an exemption from the federal excise tax of 10 cents per litre on gasoline. At the provincial level, governments exempt the ethanol portion of blended gasoline from their road taxes, without restriction on the ethanol source or the content in ethanol. The Government of Canada and some provincial governments have also supported the development and use of ethanol fuel through research and development programs.
The energy efficiency of ethanol production from grain (corn, wheat, barley) is higher in Canada than the U.S. because of a much lower dependence on irrigation for grain production in Canada. Analysis in 1992 showed that ethanol made from Ontario-grown corn had over twice the combustible energy content as was used in its production. This analysis involved all aspects of corn production, including input and machinery manufacture and transport. The cost of ethanol-production from grain, at about 35-45¢/litre, currently exceeds the refinery-gate price of gasoline. Although the cost of production of ethanol has declined substantially over time as technology has improved, present price relationships mean that ethanol provides the highest economic value when it is used as an octane enhancer to replace other octane additives - especially additives containing heavy metals, and “aromatic” compounds such as benzene. Ethanol blended fuel is only a voluntary option in Canada at present, but it is a centre for research into new ways of processing biomass for ethanol production. Canadian ethanol blends are currently at 5-10% for regular automobiles.

iii) In USA it is mandated by the government to use ethanol blended fuel.
What is the situation in Australia? Does car fuel in Australia contain ethanol?
Currently there is no government mandate in Australia to use ethanol blended fuel. Federal legislation regulated a 10% limit of ethanol blends as of July 2003 and requiring that petrol stations adequately inform consumers if they are using petrol that includes ethanol. While 10% ethanol blends are available at a few outlets across the country, it is not a popular alternative.

iv) Evaluate the success of current usage of ethanol as fuel in Australia.
Ethanol fuels are not being used in Australia anywhere near as much as they are overseas and so can be seen as unsuccessful. The government's indecisiveness to mandate ethanol blends has impaired consumer confidence of ethanol-blended fuel, while public concern has caused much resistance. In addition, given that ethanol costs almost twice as much to produce than petrol, consumers would be unwilling to purchase ethanol fuel if it is more expensive and is less energy efficient than petrol. Thus, Australia is spending money on using up quickly expiring supplies of petrochemicals, and on foreign imports that are gradually rising in price. Ethanol is being produced, and with the large tracts of land, more cane and wheat feedstocks could easily be produced, but consumer confidence is extremely low and the government has made no move to implement any strategies to incorporate ethanol as fuels

6. Assess the potential of ethanol as an alternative fuel and discuss the advantages and disadvantages of its use.
Ethanol as an alternative fuel has its advantages. It is renewable and can replace the fast-dwindling supply of international petrochemicals. It usually burns cleanly, with minimal formation of particulates, so reduces some pollution, such as hydrocarbons and carbon monoxide. It may also reduce greenhouse gas emissions, but there is still debate on how much. However it also has its drawbacks. Its combustion as a fuel has increased emissions of oxides of nitrogen and acetaldehyde. Its use in over 10% ethanol-unleaded petrol blends has been proven to cause damage in cars not specifically manufactured for the ethanol component. It contains less energy than petrol, so even if the price is lower, more ethanol is still required to move a vehicle from one point to another. And even though it reduces greenhouse gas emissions, fossil fuels are still used as a fuel during the manufacturing of ethanol as well as in the planting, harvesting and transportation of feedstock crops.
Its use in the US is as an additive in the oxygenation of fuels to reduce the pollution emitted in motor vehicle combustion engines. In Canada one of the reasons for its use is because of its ability to restrict the freezing of fuel lines in engines. Brazil uses the production of ethanol to stimulate its economy and to provide jobs for the social benefit of its people. All of these are added incentives to use ethanol as an alternative fuel, but it has only one real outstanding benefit, and that is its status as a renewable resource. Studies are pointing at a very short lifespan for the remaining world petrochemical supply, and so the focus must turn to alternative, renewable fuels that can be adapted to with as little disruption as possible. 10% blends require no change at all in the mechanics of motor vehicles, but as in Brazil, it may be necessary to recalibrate the car fleet to suit any higher blends, eg. the E85 blend of 85% ethanol and 15% petrol, which has also been proven to reduce greenhouse gas emissions by up to 75%.
In a full cycle, using ethanol as a fuel in motor vehicles as well as in its own production, the use of ethanol as a fuel has many advantages over the current use of fossil fuels. And although its benefits do not seem to overly outweigh the benefits of using petrol as a fuel, the fact remains that it is a renewable resource that has the potential to stimulate the agricultural industry and lessen the globe’s reliance on disappearing non-renewable petrochemicals. As an alternative fuel, with more research into efficient ways to its production, ethanol could possibly be a very successful option in the future fuelling of motor vehicles.


7. Pathways 2 pg 39. Data Processing – Exercise on Heat of Combustion.



Resources:
www.renewables2004.de/ppt/ Presentation4-SessionIVB(11-12.30h)-LaRovere.ppt
http://www.bcintlcorp.com/marketprint.htm
http://www.eere.energy.gov/cleancities/blends/ethanol.html
http://oee.nrcan.gc.ca/publications/infosource/pub/vehiclefuels/ethanol/M92_257_2003.cfm
http://www.greenfuels.org/ethacan.html
http://www.ontariocorn.org/ethanol/ethahome.html
http://www.onlineopinion.com.au/view.asp?article=803
http://www.raa.net/page.asp?TerID=146

Sunday, March 06, 2005

Modern history: germany: 1928-1933

Modern History
HSC syllabus
Notes for Modern History
Germany (1918-1933)
Political Parties of Post-war Germany:
The Left:
- SPD. Social Democratic Party or Majority Socialists.
o Led by Friedrich Ebert
o Sought to preserve order
o Pro-republican, democratic
o Wanted to curb revolutionary excesses, instead opting for gradual social change
o Largest party in Reichstag until 1932
o Supported by trade unions, salaried workers and civil servants
- USPD. Independent Social Democratic Party.
o Led by Haase
o Wanted to reform society first as a foundation for effective democracy
o Wanted to counter the traditional German power bases of the army, industrialists, civil service and the aristocracy
- KPD. Communist Party of Germany or Spartacists.
o Extreme left-wing
o Led by Rosa Luxemburg an Liebnecht
o Influenced from Moscow and Marxist theory
o Wanted revolution, in Germany and the world, of the working class
o Opposed to democracy and the republic as a national parliament
o Supported by the industrial working-class, unemployed
The Centre:
- DDP. German Democratic Party
o Pushed for democratic, liberal reform
o Originally pro-republican, became pro-republican
o Middle-class support
- Zentrum. Centre Party or Catholic Party
o Broad-based, moderate party
o Pro-republican, democratic
o Middle-class support
o Supporter of, in particular, Catholic interests
o Supported by people from all classes, Catholics
The Right:
- DVP. German People’s Party.
o Moderate right-wing, conservative
o Supported democracy
o Anti-communist, anti-socialist
- DNVP. German National People’s Party
o Conservative, right-wing, nationalistic
o Supported by powerful ruling classes of old Germany, eg. industrialists, Junker aristocracy, civil service and upper levels of the army HC
o Anti-republican, anti-Marxist
o Pro-monarchy
o Anti-Semitic
- NSDAP. National Socialist German Workers’ Party or Nazi Party
o Extreme right-wing
o Anti-socialist, anti-communist
o Anti-democratic, anti-republican
o Anti-Semitic

The end of WW1:
- Ludendorff and Hindenberg accepted that the war was lost and demanded that the German government negotiate an armistice to end the war
- Military High Command handed back power to the Reichstag and civilian politicians, so that they are not seemingly connected with the loss in the minds of the German public
- After years of positive propaganda, the military defeat of the country came as a shock to most Germans
- Politicians, not the army, are blamed for the defeat and the signing of peace is seen as a betrayal of the nation
- On the home front people go without basic necessities, including food because of the British naval blockade. This led to political unrest, esp. after the Russian Revolution
- The civilian gov, led by Prince Max of Baden carried out reforms and began negotiations to end the war

German Revolution 1918
- In November 1918, after years of inactivity, Supreme Naval Command ordered the German navy to attack the British fleet. With the war practically over, sailors were horrified and simply refused to obey the order. The mutiny of the sailors soon spread to neighbouring town Kiel and was joined by soldiers and workers. A soviet was set up, and the movement soon spread to other northern German towns. However, despite the frustration, war weariness and disillusionment of returned soldiers, the Workers’ and Soldiers’ Councils were not revolutionary. They were mostly led by moderate socialists demanding democracy, freedom of speech and other civil liberties.
- On 8 November Bavaria declared itself an independent republic. The monarchy was expelled and radical socialists led by Eisner formed a new gov.
- Also that day, Prince Max sends an envoy to France to sign the armistice offered by President Wilson and the Allies. Attempts by the Germans to modify the terms were rejected by the Allies
- On 9 November German High Command told the Kaiser that he no longer had the support of the army or the nation, and he abdicated and left Germany to exile in Holland. That day Prince Max handed power to Ebert, leader of the SPD, the biggest party in the Reichstag who quickly declared Germany a republic
- On 11 November German representatives sign the armistice agreement

The Treaty of Versailles:
- Was presented to the Germans in May 1919
- The Allies would only deal with a democratic German gov.
- On June 28 1919, despite intense protest, the German gov. signs the treaty (due to the Allies’ threat of renewed war)
- No Wilson’s Fourteen Points, it was an imposed peace - diktat
- Was too harsh, but not harsh enough (Allies could have either given the Germans as little cause for resentment as possible, or have eliminated Germany’s capacity to reassert itself in the future – the Treaty did neither of these)
- Germany was neither occupied nor divided permanently, and the nation remained basically intact
- The immediate effect was that Germany experienced serious economic and political instability
- Generated a legacy of long-term national humiliation and bitterness
- British economist Keynes warned of the serious economic unreality of the treaty
- The Weimar Republic would forever be associated with the Treaty, and this weakened it – created the “stab in the back” legend of betrayal

­The Weimar Constitution:
- Gave all men and women over 20 the vote, as well as many other civil liberties and freedoms
- Used proportional representation meaning there were more coalitions and less power for any single party outright. This was dangerous in a time of major socio-economic reform, a view expressed by Freidrich in 1950’s and Bracher in 1960’s. However, Kolb points out that many other European countries adopted this form of voting without it leading automatically to the rise of extremist parties.
- 2 houses of parliament – Reichstag elected by the people, and Reichsrat elected from German states
- Head of state was President, elected by the people. The President appointed the Chancellor, and had supreme command of the armed forces. However, Article 48 stated that if public order was endangered the president could suspend fundamental rights and could intervene with force. But Radel points out that France also had a similar clause. The difference was that in France it was not abused as it was in Germany
- No previous experience with democracy. It wasn’t something fought for by the people, rather it had been thrust upon an unexpected new government.
- States retained many rights and power, so state conservatives undermined republican power
- Power of party caucuses led to a loss of freedom for Reichstag members and increased difficulties in forming coalitions due to inflexible party positions over little matters in policy
- Industrialisation increased geographical mobility and created smaller social classes, disintegrating the party system (Kolb and Lepsius)
- Republican gov.’s failure to introduce reforms to industry, civil service, education, judiciary and the army meant it had to operate under attacks from a variety of anti-republican, conservative and traditionalist strongholds

Ebert as Chancellor (1918-Feb 1919):
- Did not want the role “I do not want it, in fact I hate it like sin” It was unexpected and he was unprepared
- He believed the “revolution” was over, but knew the extreme left wasn’t finished
- Stinnes-Legien Pact. 18 Nov 1918
Between trade unions and industrialists. Ebert supported this alliance, as capitalists, worried about the extreme left’s demands for socialism and social reform gave their workers the 8-hour day and the right to form committees and in return promised that the unions would not support the left’s radical demands.
- SPD and USPD split in December 1918 after Ebert used the army to quell an insurgence of radical sailors in Berlin
- Groener-Ebert Pact. Nov 1918
In return for maintaining discipline and order in the army, the military were prepared to “put itself at the gov’s disposal”. The army feared disorder and Bolshevism, and Ebert shared the same fear. In this way, the army and many of its leaders retained its influence.
- The Freikorps
Special military units of returned ex-soldiers. Defence minister Noske supported them and saw them as more efficient that the army to protect the gov from the extreme left
- Spartacist Uprising. Jan 1919
Spartacists had never joined the gov and continued to urge for counter-revolution and the overthrow of the Ebert gov. At the end of 1918 they renamed themselves the KPD. They were encouraged by the despair of the working-class (blockade still in place) and seized official buildings in Berlin. They declared the Ebert gov deposed and a mass demonstration of 200000 workers took place where Berlin Shop Stewards declared a general strike. Trapped in the Chancellery, Ebert ordered the Freikorps to put down the uprising. The shop stewards called off the strike and Luxemburg and Liebknecht were both arrested and murdered by the Freikorps.
- Bavarian Unrest
Subsequent rebellions also broke out in Bremen and in the independent Bavarian state. Noske again sent out the Freikorps to forcefully settle the unrest, and Eisner was killed in Bavaria. Freikorps units and regular troops were sent to Munich to put down the new communist republic that had emerged.
- Ebert’s policy of using force to remove the threat of counter-revolution from the radical left caused deep divisions in the left of German politics.
- February 1919 the first elections are held and Ebert is elected President

The Army in the Weimar Republic:
- Carr: “the Weimar Republic provided a façade for the rule of the General Staff and big business”
- Kept much of its standing through Freikorps, not enough gov reform, Groener-Ebert Pact
- Right wing elements in German society (nationalists, industrialists, military and old ruling classes) had never supported the Republic
- The Kapp Putsch 1920
Carrying out the clauses in the Treaty of Versailles, the gov ordered that the Freikorps be disbanded and the size of the army reduced. General Luttwitz led the Berlin Freikorps unit to move in on the city in protest. Expecting the army to protect them from the right as they had the left, Ebert and Chancellor Bauer were forced out of Berlin when army leader General Seeckt told them that the army was going to stay well out of it. “when Reichswehr fires on Reichswehr, then all comradeship within the officer corps will have vanished”. The military leaders of the putsch (coup) declared a new gov led by Wolfgang Kapp. However, their plan had little chance of success because the working-class and middle-class trade unions declared a general strike which quickly paralysed the city. They were supported by the German bureaucracy and in a few days the putsch had failed.
- The Kapp putsch revealed the weakness of the gov in dealing with the right, and showed that the working-class and organised labour were still a powerful force in German society. It also showed the growing power of the army within the state.
- Noske was sacked and Gessler became the defence minister. However he was often overruled by von Seeckt. Thus close links emerged between the Reichswehr and the President so that the army, who was not responsible to the Reichstag, could have a say in politics and in the choosing of Chancellors
- During the early 1920’s Seeckt, the new commander of the Reichswehr, carried out many reforms in the German army by making it bigger through technicalities and by creating a system that made ability the criteria for promotion. Although many of these changes secretly violated the military provisions of the Treaty of Versailles, he preserved the standing and influence of the army and set new foundations for a strong army in later years
Historians have had many different views of the army in Weimar Germany:
- Liberal:
o Eg. Bracher, Carsten in 1950’s, 1960’s
o Saw the Reichswehr as undermining the democratic city and developing a “state within the state”, pursuing its own, independent goals
- Conservative:
o Eg. Meier-Welcker
o Claims the army came to terms with the republic and would have supported it in the 1930’s if the gov had been more sympathetic to the needs of the army
- Recent:
o Eg. Hillgruber, Geyer in 1970’s
o Concentrate on the ideas of “strong gov” with a fusion of civilian and military elements to found a Wehrstat or military authoritarian gov. ie. there was a compromise between gov and army, and no “state within a state”
- Kolb:
o Agrees with other recent historians, but makes the point that this does not mean that a strong army was at all necessary. The army still had no real reason besides their own ambitions for power for all of its machinations in the late 1920’s.

Economic disorder
- From 1919 to 1924, the Weimar gov had to deal with the collapsing German economy
- The gov had financed the war mainly through borrowing, and when Germany was defeated, it owed millions of marks and was suffering rising inflation
- Key industrial resources had been lost in the peace treaty, Germany lost all export trade and was unable to attract foreign investments or loans.
- The gov itself was not prepared to carry out any necessary economic reforms to solve the problem. They simply printed more money, so the value of the mark continued to fall.
- Policy of Fulfilment
Political instability ensues and republicans Wirth and Rathenau become Chancellor and foreign minister, putting in place the policy of fulfilment, ie. for the good of the nation Germany should seek to fulfil the provisions of the Treaty “in order to preserve the honour of our name”. It was to create a situation where it would then be possible to renegotiate and modify some of the terms.This policy, an affirmation of the Treaty, met intense opposition from the right, who through the still existing, although disbanded, Freikorps, carried out many political murders and even killed Rathenau in 1922. However, despite a new law designed to curb the violence, right-wing groups that came before the courts were treated mildly by a legal system that was itself right-wing.
- Occupation of the Ruhr
In Jan 1923 when Germany couldn’t meet its second reparation deadline, French and Belgian troops occupied the Ruhr, aiming to seize control of the mines and factories. Britain disagreed with the French. All German parties united in their condemnation of the French action, but they were in no position to resist the French with military force, so the gov. introduced a policy oft “passive resistance” in the Ruhr, ie. Germans did not cooperate and industry and mining came to a halt as workers went on strike. The invaders were there for 2 years. Thousands of Germans were forcibly removed, and curfews were imposed, many were imprisoned and acts of violence increased on both sides. The German economy couldn’t deal with the loss of a vital industrial area like the Ruhr, having to support those unemployed, and pay for the import of coal that they would normally have produced.
- Hyperinflation
By 1923, Germany was experiencing a rapid fall in the value of their currency, to the point that it became worthless. In Sept 1923 one US dollar was worth ten million marks. Business transactions of any sort became impossible, and banks issued bank notes by weight. The middle- and lower-classes were most severely affected, losing savings, wages and any welfare, while the self-sufficient farming class and the industrial and business classes gained the most. The extreme political parties demanding drastic change began to gain more support
- In Aug 1923 the conservative Cuno gov finally fell and Ebert called on Stresemann, leader of the DVP, to form a new coalition gov., the “Great Coalition”
- Also in Aug. industrialists and generals realised that Passive Resistance had failed. On Sept 24 Stresemann abandoned the policy.
- Stresemann also began the process of negotiation with the French and introduced financial reforms and the new currency, the Rentenmark to deal with hyperinflation

Political Upheaval 1923:
- Political upheaval in many states and the danger of separatism
- Saxony and Thuringia were legally in the power of the communists
- NSDAP gained power in Bavaria
- Seeckt’s army would not outright move against the right-wing forces in Bavaria
- However, the army quickly mobilised to Saxony and Thuringia when asked and removed the communists from gov there. This aroused criticism from socialists and the working-class, because the gov there had been voted for democratically, and the SPD walked out on Stresemann’s coalition. A vote of no confidence meant he was forced to resign in Nov 1923.
- Beer Hall Putsch 8 Nov 1923
The Kampfbund (fighting league) in Bavaria included the Nazi movement, as well as Gen Ludendorff, and constantly attacked the democratic gov. In 1923, when the Bavarian gov was wavering in its support of Stresemann’s gov, they decided the time was right to take Bavaria by force and trigger national revolution. Bavarian leaders were detained and Hitler declared a new gov. However the army was not prepared to back the putsch as military reinforcements had entered the city. Ludendorff led Hitler to the centre of Munich where a march was staged, hopefully to win support. The ploy failed and Ludendorff and Hitler were arrested. Ludendorff was excused from court but Hitler served 6 months of a 5-year prison sentence given him by a right-wing judiciary. By the time the verdict was given in 1924, Hitler was not an unknown Bavarian politician, but a national figure.

The Middle Years (1924 – 1929)
- Dawes Plan 1924
Adjusted the payment of Germany’s reparations bills to the amount that Germany had the capacity to pay. As part of the plan Germany was to receive an immediate loan and France agreed to leave the Ruhr. This began a period of economic growth in Germany, but met criticism from right-wing political notes.
- Foreign loans
The gov spent much of the money on public works, housing, transport, welfare. Industry was restructured and modernised and industrial cartels were created. Exports doubled and coal, iron and steel production surpassed pre-war figures.
- However the prosperity was built on weak foundations. Germany was living off borrowed money and economic power was concentrated in the hands of industrialists and bankers. Unemployment remained high and agriculture remained depressed
- Stresemann, after an unsuccessful Chancellorship, became foreign minister. He was a nationalist, but set realistic goals for foreign policy, believing Germany could recover its position in the world by peaceful negotiation. Taylor: “he intended to do this by persistent pressure of events, not by threats, still less by war.” He remained in this post until his death in 1929.
- In Feb 1925 Ebert died and 2 elections were held to decide on his successor. Hindenberg, the right-wing, nationalist figurehead of old imperial Germany was elected into office, and he took over from the man that had tried to rule constitutionally. However, even though the right-wing extremists though Hindenberg would lead the old Germany back, he did remain loyal to the constitution while in office. It is significant that Germans chose a heroic field marshal rather than the SPD/ Zentrum candidate.
- Treaty of Locarno 1925
Between France, Germany, Belgium, Britain, Italy in Oct 1925. The treaty guaranteed the French-German and German-Belgian borders and renounced the use of war in the future. This was the first time Germany was treated as an equal. Briand (French foreign minister): “At Locarno we spoke European. It is a new language that we certainly ought to learn”.
- Germany was admitted to the League of Nations in 1926, although many Germans were opposed to this joining with the old Allies
- The issue of Germany’s relationship with eastern Europe, Poland and Czechoslovakia, was still not properly addressed although several treaties were signed between Germany and its old states.
- Treaty of Rapallo 1922
Between Germany and Soviet Russia which established diplomatic relations. Like Germany, USSR had been still, and still was shunned by the global community. Both nations were temporarily weak but potentially powerful.
- Treaty of Berlin 1926
Between USSR and Germany, it provided for friendship and neutrality as well as increased economic and military cooperation.
- The Young Plan 1929
Followed Dawes Plan, with new revisions for conditions for reparations payments:
o Reparations to continue until 1988
o Allied controls to be dropped
o Rhineland to be evacuated by 1930
It was based on the assumption that the German economy was stable and that economic growth would continue. It was opposed by certain right-wing elements led by Hugenberg, who said that the Young Plan would “undermine Germany’s will to destroy the Versailles Treaty”. Hitler was part of this Harzburg Front and made important and high-ranking connections and gained publicity.
- Stresemann died suddenly just weeks before the US stockmarket crash. His policies had begun economic recovery, and his diplomacy had restored Germany to a position of equality and fostered international goodwill.
- Cultural life in Weimar Germany
Germany became on of the world centres for creative arts and ideas. It was a society prepared to accept the expression of new ideas.
o Provocative theatre, cabaret and films flourished, much of it with a political and social message, eg. Brecht (Marxist), Lang, Sternberg, Metropolis, Nosferatu.
o Literature and architecture also abounded, eg. All Quiet on the Western Front, and the Bahaus School of Art and Architecture, which believed in functional art that worked with new technology. The main theme of much leftist literature was a revolt against authority.
o Expressionist painting was the fashion, and much German work focused on the suffering and hardship many Germans had endured, eg. Otto Dix, Klee, Beckmann, Grosz. In the 1920’s Germany replaced Paris as the world centre of modern art.
o Germany also had the most educated population in Europe, and science and technology were much advanced, eg. Einstein, Freud, Jung, Mercedes, BMW, Zeppelins, 7 Nobel Prizes in 1920’s
o The gay and lesbian movements as well as the nudist movement were very out in the open in Germany at the time, eg. film star Marlene Dietrich
o Open prostitution – people came from around the world to experience Berlin culture
Historians have sought to interpret the cause and effect of this creative and cultural outpouring:
o Johnson suggested that it had been building since the nineteenth century, and that with war and defeat, German society changed as class divisions began to break down.
o Gay suggests that post-war society provided the opportunity for many who had been outsiders to gain acceptance
o Kolb noted that there was a great divide between these artistic groups and ordinary Germans, and that the cultural expression alienated a large part of the population. The leftist culture upset and was opposed by many conservatives. To many this was unacceptable and a reflection on the republican gov that had allowed it to flourish. The Nazis in particular became violently opposed to the new culture of Weimar Germany.

The Collapse of the Weimar Republic (1921929-1933)
- The right-wing were incensed by Stresemann’s “soft” foreign policies. Their aims were not only to reclaim old German territory, nut also expand west. On the domestic scene the barons of the steel and heavy industries advocated and authoritarian, anti-western and anti-republican course. They wanted to curb the power of the German labour movement, and would follow any political party supporting this cause.
- The Dawes Plan involved injecting large sums of US capital into the German economy. With all levels of gov going on a spending spree, only balancing budgets with US loan money, Germany became very dependent on the US and built up a huge deficit. When the US stockmarket crashed in Oct 1929, they called in the loans, and it only took weeks for Germany to experience total disarray. Enterprises went bankrupt and unemployment rose sharply.
- To meet the rising costs for welfare, middle-class parties demanded and increase in unemployment insurance. The SPD couldn’t accept this and new elections were held in 1930. However, they did not resolve the problem – no outstanding gov was formed. Hindenberg invoked Section 48, giving himself the power to govern by emergency decree. He appointed Bruning Chancellor.
- Bruning had to deal with the failing economy and decided to cut gov spending completely while raising taxes. The budget was to be completely balanced. Consequently:
o Overall wages reduced to 1927 level (cut by 10%)
o Unemployment pay cut by 60%
o Decline of business and waves of bankruptcy
o Unemployment rose form 2 to 6 million on 2 years.
o High unemployment + high food prices led to intense poverty and suffering to most
Historians discuss the effects of the Depression:
o Fest: unprecedented wave of suicides + dropping birth rates led to a decline in the population. Charlatans, astrologers, clairvoyants, etc flourished to accompany the springing up of wild hopes in a time of great suffering
o Knickerbocker: describes the inability of the working-class to afford even basic commodities (eg. food), and their desparation. People relied on charities and about 15 million received their livelihood from social services and welfare.
- Political violence increased in 1932, with several attempts to assassinate members of gov and high-ranked officials. There were constant street battles between paramilitary forces, mostly between Nazis and Communists, purposefully provoking each other to act. The effect of this violence was: “devastating for the public. They became convinced that the authorities had lost control and that a coup or revolution was imminent”. (Berghahn)
- Violence + Bruning’s austerity program in the face of global Depression led to the people’s losing confidence in the gov and hence democracy and the republic. More and more people turned to extreme political movements

Nazi Seizure of Power (1932-1933)
- When Bruning suggested that the SA and SS be banned, Schleicher, the new Reichswehr chief, convinced Hindenberg to appoint Papen Chancellor. He did so in May 1932.
- Von Papen’s Chancellorship:
o Headed “cabinet of the Barons” a thinly disguised front for the vested interests of the agrarian and industrial elites
o 20th Jul 1932 unlawfully dismissed the Prussian gov that had been a thorn in the side of the conservative establishment since the revolution. Made of SPD and Zentrum, the gov had provided a stable counterbalance to the anti-democratic forces in Germany. However, this time the unions and SPD simply accepted the dismissal – they had become resigned to the relentless attacks from right and left, added to the failure of their policies
o called new Reichstag elections in Nov 1932. NSDAP vote increased to 37.3%
- Hitler’s definition of “socialist” was that nationalism broke down class barriers. It stemmed from his fighting in WWI where he saw men from all classes fighting side by side for Germany
- Hindenberg hesitated in making Hitler Chancellor because he was wary of the extremism of the Nazi party. He feared that a gov under Hitler would become a dictatorship
- Papen had little backing in the Reichstag so he proposed to dissolve parliament and rule by martial law and decree. Schleicher told Hindenberg that the army could not support this plan. On Dec 1 1932 Papen was dismissed and replaced by Schleicher. Papen continued to scheme to get back into the gov and planned to replace Schleicher with a right-wing coalition made of reps from army, business, landed aristocracy and NSDAP. Hitler was to be Chancellor and Papen vice-chancellor with similar power.
- 30 Jan 1933 Schleicher was dismissed and Hitler and his cabinet were sworn in by Hindenberg
- Hitler controlled the Ministry of the Interior (therefore the police) and SA and SS got new powers
- Feb 1933 the Reichstag building burnt down. This led to a witch hunt of all Nazi “enemies” especially the Communists who were accused of sabotage. Hitler got an emergency decree that abolished rights of free association and assembly and freedom of the press
- Hitler pressed for elections in March 1933, and with an unlimited supply of money, the Nazis launched a successful campaign. However, they still didn’t get a big enough majority and would have had to rely of their coalition partners.
- Propaganda was launched by Goebbels to introduce the Enabling Act which would give temporary dictatorial powers to the gov if it had 2/3 Reichstag votes. Hitler and Hindenberg, in a grand demonstration, gathered in front of Crown Prince Wilhelm and the Kaiser’s empty throne. SPD delegates were arrested and all other parties voted for the Act 441 to 84.
- The Nazis were supported by mostly rural and semi-rural voters and land-holders with a lot of political weight in their local govs.
- Extremes were supported in the 1930’s but the left was fractured by a bitter and irreconcilable division. Until the eve of the Nazi seizure of power, the Communists, following Moscow’s direction, heralded that a victory for Nazism would signal the final collapse of capitalism
Historians views on the collapse of the Weimar Republic:
- Bullock, Nicholls: Hitler’s personality was crucial
- Craig: Germans were reacting to social change. Military and Junkers were to blame
- McKibben, Taylor: Depression and subsequent unemployment led to fear among the petit-bourgeoisie
- Bracher: Germany had a weak democratic base, undermined by fear of communism, alliance of army and gov and the incomplete 1928 revolution
- Fischer: Superficial nature of the Weimar gov
- Howland & Barr: constitutional weaknesses, incl multi-party system
- Kershaw: Structural weaknesses of Weimar society
- Kolb: failure to destroy the power of old elites in 1918, alliance of nationalists and authoritians
- Schoenbaum: A rapidly industrialising society failed to accept change, leading to a search for a “leader”

Timeline of events

1918 – Nov: Revolution
Nov 8: Bavaria declared itself Republic
Nov 9: Kaiser abdicates
German Republic declared by SPD
Nov 11: Armistice signed
Nov 18: Stinnes-Legien Pact
Groener-Ebert Pact
Freikorps created
Dec: SPD and USPD split
1919 – Jan: Spartacist Uprising
Feb: First elections
May: Allies present Treaty of Versailles
Jun 28: Germans sign Treaty of Versailles
1920 – Kapp Putsch
Noske sacked
Groener is replaced by Seeckt as commander of Reichswehr
1921 – May: Germany presented with first reparations bill
Wirth (Zentrum) is Chancellor
Rathenau is foreign minister
Jun: Policy of fulfilment
1922 – Jun: Right-wing extremists gun down Rathenau in a street
Treaty of Rapallo
1923 – Jan: France and Belgium invade the Ruhr
Aug: Stresemann Chancellor
Nov: SPD walk out, Stresemann resigns
Nov 8: Beer Hall Putsch
1924 – Apr: Dawes Plan
1925 – Oct: Treaty of Locarno
Ebert dies
Hindenberg president
1926 – Germany joins League of Nations
Treaty of Berlin
Seeckt replaced
1928 – Groener replaces Gessler as civilian minister of defence
1929 – Young Plan
Oct: Stresemann dies
US stock market crash. Great Depression ensues
1930 – SPD walk out of coalition, new elections
Bruning Chancellor
1932 – May: Bruning dismissed
Jul 20: Prussian gov dismissed
Schleicher dismisses Groener and Chancellor Bruning
1933 – Jan: Hitler is Chancellor
Feb: Reichstag fire
Enabling Act passed

Chemistry: Production of Materials: 5

5. Nuclear chemistry provides a range of materials.

Distinguish between stable and radioactive isotopes and describe the conditions under which a nucleus is unstable
An isotope of an element, E, is represented by AEZ, where A represents the mass number (the number of protons + neutrons), and Z represents the atomic number (the number of protons). Isotopes of the same element have the same atomic number (Z). What differs is the number of neutrons. The number of neutrons a nucleus may contain can be too many, not enough or a “stable number”. The overfilled or under filled nuclei tend to be unstable, and as the nuclei become larger, the stable nuclei need more neutrons than protons (1:1.5 as opposed to 1:1 in smaller nuclei). Only 279 of about 2000 known isotopes are stable.Radioactive isotopes are unstable. They emit radiation as they spontaneously release energy. This is called radioactive decay. 3 types of radiation can be released:
Radiation
Type
Charge
Deflection in magnetic field
Deflection in electric field
Symbol
Penetrating ability
Alpha
4He2 particle
+
Deflected
Towards –ve plate
Low (paper)
Beta
0e-1 particle
-
Large deflection
Towards +ve plate
Medium (alfoil)
Gamma
high frequency electromagnetic radiation
Nil
Nil
Nil
Very high (lead/concrete)

Describe how transuranic elements are produced
Transuranic elements are elements with an atomic number above that of uranium with atomic number Z= 92.
Twenty-two transuranic elements have been made. Only three of the transuranic elements, those with atomic numbers 93, 94 and 95, have been produced in nuclear reactors (the others all in cyclotrons).
When U-238 is bombarded with neutrons it can be converted to U-239 that undergoes beta decays to produce neptunium and plutonium.
Pu-239 is changed to americium by neutron bombardment.

Transuranic elements from atomic number 96 and up are all made by accelerating a small nucleus (such as He, B or C) in a charged particle accelerator (cyclotron) to collide with a heavy nucleus (often of a previously made transuranic element) target. However, cyclotrons are not able to produce large quantities of radioisotopes. In the case of nuclear reactors, the nucleus to be used is placed inside the reactor and then it is bombarded with neutrons.

Describe how commercial radioisotopes are produced
Most commercially used radioisotopes are created in nuclear reactors. Nuclear reactors produce lots of neutrons from fission reactions. Some of these neutrons are captured by heavy nuclei, such as uranium-238. This makes a new nucleus with the same atomic number but a higher atomic mass. Some of these new heavier nuclei can then convert to nuclei of other elements by beta decay. The following example is only one of many possible results of nuclear fission.

When the uranium nucleus breaks up into two nuclei, many different possible isotopes can form. Differences in chemical properties of the elements produced can be used to chemically separate the different radioisotopes. Any U-235 that has not undergone fission can be separated and recycled into new fuel rods. The high-speed neutrons emitted can be used to bombard atoms of various elements to produce useful neutron rich isotopes

Identify instruments and processes that can be used to detect radiation
- Photographic film: Becquerel showed in 1896 that uranium emission could darken photographic film. It is used in radiation badges for workers working in radioactive environments.
- Geiger-Muller counter: This is a tube with a thin mica window (for alpha particles to enter) containing argon at a pressure of 10kPa. The radiation ionises the Ar atoms, forming Ar+ cations and electrons. The electrons are accelerated towards the axial anode, ionising more Ar atoms and a cascade of electrons reaches the anode. The electric pulse is amplified and detected as clicks on an audio amplifier.
- Scintillation counter: (non-ionising radiation) several substances emit flashes of light when struck by alpha, beta or gamma rays. The radiation emitted transfers energy to a solvent molecule and then to a fluorescent molecule that emits light. A photomultiplier produces an amplified electrical pulse from the light. A counter counts the pulses. Phosphor used could be ZnS or NaI.
- Cloud chambers: These consist of cold, supersaturated vapour (ethanol kept cold with dry ice). It condenses on the ionised track left by radioactive emissions.

Identify one use of a named radioisotope:
- in industry
- in medicine

Cobalt-60
Caesium-137
Chemical symbol
1. Use
In medicine: gamma rays released are used in radiotherapy to treat cancer.
In industry: in levelling gauges.

Describe the way in which the above named industrial and medical radioisotopes are used and explain their use in terms of their chemical properties


Cobalt-60
Caesium-137
Chemical symbol
1. Use
In medicine: gamma rays released are used in radiotherapy to treat cancer.
In industry: in levelling gauges.
2. Production
Produced as a by-product of nuclear reactor operations, when structural materials, such as steel, are exposed to neutron radiation
Produced when uranium and plutonium absorb neutrons and undergo fission, eg. in nuclear reactors and nuclear weapons. The splitting of uranium and plutonium in fission creates numerous fission products, including Cs-137
3. How used
Co-60 releases gamma rays because it has an unstable nucleus. Unstable nuclei spontaneously emit radiation as they are transformed back to a stable state (ie. As Co-60 decays to Ni-60). High intensity gamma radiation will kill cells. It is used in a technique called radiotherapy to treat cancer by targeting the cancer cells with a beam of radiation and then rotating the source of the beam. The normal cells receive a lower dose of gamma radiation than the cancer cells, where all the rays meet. Radiotherapy aims to kill the cancer cells while doing as little damage as possible to healthy normal cells.
Cs-137 releases gamma rays because it has an unstable nucleus. Unstable nuclei spontaneously emit radiation as they are transformed back to a stable state. Radiation emitted from Cs-137 will be reduced in intensity by matter between the radioisotope and a detector. The amount of this reduction can be used to gauge the presence or absence of the material, or even to measure the quantity of material between the source and the detector (or the thickness or thinness).
4. a) Benefits
The half-life of cobalt-60 is 5.27 years. This is short enough to make isolation a useful treatment strategy for contaminated areas. In some cases, simply waiting 10 to 20 years allows for sufficient decay to make the site acceptable for use again.
In gauging, there is no contact with the material being measured, therefore no radioactive contamination. Because it has a half-life of 30 years, Cs-137 can be used many times without needing to be replaced, thus reducing costs in industry.
4. b) Problems
All ionising radiation, including that of cobalt-60, is known to cause cancer. Therefore, exposures to gamma radiation from cobalt-60 result in an increased risk of cancer. The magnitude of the health risk depends on the quantity of cobalt-60 involved and on exposure conditions (length of exposure, distance from the source, whether the cobalt-60 was ingested or inhaled). Because of their metallic housings, sources of Co-60 can get mixed in with scrap metal and pass undetected into scrap metal recycling facilities. If melted in a mill, they can contaminate the entire batch of metal and the larger facility, costing millions of dollars in lost productivity and cleanup costs.
Caesium-137 can be mistaken for potassium by living organisms and taken up as part of the fluid electrolytes. This means that it is passed on up the food chain and reconcentrated from the environment by that process. This makes the cleanup of caesium-137 difficult, as it moves easily through the environment. The half-life of caesium-137 is 30.17 years, which is relatively long, especially if it enters a living organism, because like all radionuclides, exposure to radiation from caesium-137 results in increased risk of cancer. Caesium-137 is an inorganic salt, and is highly soluble in water. If a leak were to develop in a storage facility, the radioactive material could easily contaminate surrounding water.

Other examples:
Radioactive isotope
Use
Benefits
Problems
Iodine-131
(a by-product from nuclear fission in nuclear reactors)
For a number of medical procedures, including to monitor and trace the flow of thyroxin from the thyroid.

With its short half-life of 8 days, it is essentially gone from a body in less than three months.
It emits fairly high-energy beta particles and a number of gamma rays. The gamma rays are of sufficient energy to be measured outside the body if deposited in tissue such as the thyroid. Because iodine selectively deposits in the thyroid, the primary health hazard for iodine is thyroid tumours resulting from ionising radiation emitted.
Strontium-90
(a by-product from nuclear fission in nuclear reactors)
In thickness gauges (for paper, cardboard) because of its release of beta particles – the penetration of these particles indicates the thickness of a material.
Has a half-life long enough for repeated use (28 years).
Strontium is radioactive, and decays very slowly, so if exposed, it will take 28 years to decay. Strontium-90 mimics the properties of calcium and is taken up by living organisms and made a part of their electrolytes as well as deposited in bones. As a part of the bones, it is not subsequently excreted like caesium-137 would be. It has the potential for causing cancer or damaging the rapidly reproducing bone marrow cells.

Process information from secondary sources to describe recent discoveries of elements
Twenty-two transuranic elements have been made. The nineteen transuranic elements with the atomic numbers above 95 (Z between 96 and 116, leaving out undiscovered 113 and 115) require high-energy particle accelerators to be produced. The majority of the transuranium elements were produced by two groups:
- A group at the University of California, Berkeley, under three different leaders: Edwin Mattison McMillan, first to produce a transuranium element, Glenn T. Seaborg, and Albert Ghiorso, who had been on Seaborg's team.
- A group at the Gesellschaft für Schwerionenforschung (Society for Heavy Ion Research, GSI) in Darmstadt, Hessen, Germany, under Peter Armbruster.
Recent discoveries of elements:
- Meitnerium (109): first synthesized on August 29, 1982 by a German research team led by Peter Armbruster and Gottfried Münzenberg at the Institute for Heavy Ion Research at Darmstadt. It was done by bombing a target of bismuth-209 with accelerated nuclei of iron-58. The creation of this element demonstrated that nuclear fusion techniques could be used to make new, heavy nuclei.
- Darmstadtium (110): first created on November 9, 1994 at the GSI in Germany. It has never been seen and only a few atoms of it have been created by the nuclear fusion of isotopes of lead and nickel in a heavy ion accelerator (nickel atoms are the ones accelerated and bombarded into the lead).
- Roentgenium (111): first created at the GSI on December 8, 1994. Only three atoms of it have been created (all 272Rg), by the fusion of bismuth-209 and nickel-64 in a linear accelerator. (Nickel was bombarded onto the target.)
- Scientists from the Dubna facility in Russia and from Berkeley have claimed to have created elements 112-116 but so far these claims have not been verified.
- In 1999, the team at Berkeley claimed to have created element 118 by bombarding lead targets with an intense beam of krypton in a synchrotron, however their statement was retracted in 2001. No one else has been able to verify their claim.
Resource: http://en.wikipedia.org/wiki/Transuranium_elements

Use available evidence to analyse benefits and problems associated with the use of radioactive isotopes in identified industries and medicine
Radioactive isotopes of various elements can be used for a range of purposes, and have the potential to be very efficient and useful, but their use must be balanced against the dangers that are inherent in handling any sort of radioactive material.
In medicine the isotope cobalt-60 is used to treat cancer. Its high intensity gamma radiation is directed at the malignant cells and is used to kill these cells, while trying to minimise damage to healthy cells. As with any radioisotope, exposure to gamma radiation may also damage healthy tissue, and this is one of the risks to be considered when undergoing radiotherapy for cancer. Another medical isotope is iodine-131, used to monitor the efficiency of the human thyroid. It is used to trace the flow of thyroxine to the gland, and is of great help when trying to diagnose thyroid-related problems. It has a short half-life (8 days) and this means that any exposure to radiation from this source will only be minimal and over a short period of time. However, the gamma rays emitted from iodine-131 are strong enough to be measured outside the body once in the thyroid, and this means that the radiation is still strong enough to cause damage to cells. Because iodine-131 is still used in diagnosing thyroid problems, it can be seen that the usefulness and efficiency of this method of testing outweighs the potential dangers in the eyes of the medical industry.
In industry, the gamma radiation produced by the radioisotope caesium-137 is used in levelling gauges to ensure that materials are level. The amount of gamma radiation that penetrates the material depends on the amount of material there is between the source of the radiation (in this case caesium-137) and the detector. In much the same way, strontium-90 is used as a thickness gauge for other, thinner materials. Here, instead of measuring the amount of gamma rays penetrating the material, beta particles are measured. Both of these industrial isotopes are created as by-products from the nuclear fission of elements such as uranium or plutonium, in nuclear reactors or from nuclear weapons. These types of nuclear reactions can be quite risky in themselves, and although many safety measures are in place at nuclear reactors around the world, it only takes one bad accident to have far-reaching and long-lasting effects (eg. Chernobyl 1986). In particular, both strontium-90 and caesium-137 can be mistaken by the body as calcium and potassium respectively, and are taken into the body as part of fluid electrolytes. In this manner, the radiation from the isotopes directly enters the body and can begin to harm living tissue. The half-lives of these two radioisotopes are about 30 years, which is a dangerously long time for a living organism to be exposed to radiation. However, for use in industry, the lengths of these half-lives is cost effective, because the isotopes only need to be replaced about every 30 years.
Besides the risks involved in producing all of these radioactive isotopes, and the health hazards from direct contact with the isotopes, there is also an environmental issue. Co-60, I-131 and Cs-137 are all soluble in water, one of the reasons for their use in medicine. Because of this, any leaks in storage facilities could result in the contamination of surrounding water, and thus the surrounding environment. Excessive radiation exposure is harmful to all living organisms, and if radioactive sources are ingested or absorbed, radiation build-up could occur within food chains and webs.
These examples of radioisotopes used in medicine and industry are a small cross section of the all the radioactive isotopes used. Each has its merits and makes the process of diagnosis and treatment more efficient in medicine, and the process of mass production more efficient in industry. However, the benefits from using these isotopes must be balanced with careful and strict safety precautions, due to the danger involved in handling radioactive substances.