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I was going to write cracking only, then my hand by accident wrote catalytic cracking, and i wasn't bothered deleting it, nor was i bothered putting thermal cracking. Yes HSC LIFE IS GAY AND MAKES PEOPLE TIRED WHEN THEY GO AT IT FOR HOURS hahaahahah Yeah because for 3 marks, it wouldnt be...

Describe how ethanol may be prepared from renewable and non-renewable resources. Include relevant equations and state any reaction conditions required. 3 marks. Quick question guys, would you go all the way back to how ethylene is fractionally distilled from petroleum, or it is produced...

ez Okay so you know you have your equation blah blah, and you work out the concentration of the acid to be 0.33015. HOWEVER, this is the concentration of the dilute acid, we want the concentration of undilute acid. NOW, this is the best way to remember how to go from here, so the acid went...

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okay cool, i was iffy about my answers but thats what i had :D

Nope we are all correct, i just realised i had the 2010 paper along with the solutions.

Someone do question 6,7 & 20 of Ruse 2011 multiple choice pls. Need more people to validate answers for 2011 paper

But citric is only 7-8% ionised whereas sulfuric is 100%.

2 is A. The whole point of catalytic cracking is to get one alkene and alkane, not 2 alkanes, then it's use is futile. 8 is C. One of the reactions in your answer has no hydrogen in it, therefore isn't a Brownsted-Lowry Acid.

oooo yes my bad!

Explain ! :D

Here are my answers for multiple choice B B C A D D A A B B D C B C C B C B B C

Yes

Yeah, exactly, thats what i thought. Answers possibly wrong?

Alright :D lets do it

What was your original answer?

Sure :D

Since the 2011 Ruse paper does not have solutions, could someone be bothered to do the multiple choice so i can compare my answers against theirs? lol :D

Thanks :D Wot? I'm supposed to talk about environmental problems?

It's hard to explain