what was the answer to the atom economy question
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OCR AS - Chemistry Unit F322 - Chains, energy and resource - REVISION! watch
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- 29-05-2011 17:37
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- 29-05-2011 17:39
(Original post by Kir4nK)
what was the answer to the atom economy question -
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- 1263
- 29-05-2011 18:18
(Original post by Kir4nK)
what was the answer to the atom economy question -
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- 1264
- 29-05-2011 18:38
(Original post by king1234)
how many marks do you think you have got -
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- 1265
- 29-05-2011 18:38
(Original post by kimmey)
molecular mass of desired product/molecular mass of all products x 100 -
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- 1266
- 29-05-2011 19:56
(Original post by Kir4nK)
for that question ? -
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- 1267
- 30-05-2011 14:28
for the question on atom economy or yield
i thought hard about this
and forgot the book description..so i thought
yeild is more important ..because u want more product ..
thats the most important thing..
with atom economy fair enuf u get by products bt u can find ways to get rid of them safely..
anyone agree? -
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- 1268
- 30-05-2011 17:58
(Original post by shooby_doo)
What did you do on the question for international awareness of incineration of plastics? -
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- 1269
- 30-05-2011 19:05
for the last question I've drawn out the structure of the alcohol, carboxylic acid and the ester but I didn't put down their names... Do people think I would have lost a mark for not naming them?
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- 30-05-2011 19:21
(Original post by gwengwen)
for the last question I've drawn out the structure of the alcohol, carboxylic acid and the ester but I didn't put down their names... Do people think I would have lost a mark for not naming them? -
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- 1271
- 30-05-2011 19:25
I was in hurry when i was doing the last question so I didn't read the question properly...
I thought I've done quite well until I saw other people discussion and I think I've already lost 10 marks ... all silly mistakes !
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- 1272
- 30-05-2011 19:31
(Original post by gwengwen)
I was in hurry when i was doing the last question so I didn't read the question properly...
I thought I've done quite well until I saw other people discussion and I think I've already lost 10 marks ... all silly mistakes !
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- 30-05-2011 19:36
(Original post by Peanut)
Well only 10 marks wouldn't be terrible. Still a bloody good A -
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- 30-05-2011 19:37
(Original post by gwengwen)
I might have lost more marks... anyway the grade boundary will be quite high as everyone is saying -
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- 30-05-2011 19:42
(Original post by king1234)
high i think they will be lower -
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- 30-05-2011 19:48
(Original post by gwengwen)
I think this paper is the hardest paper out of all papers I've done... So I hope the boundary will be low low low !!! -
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- 30-05-2011 19:50
(Original post by king1234)
same in june 2010 got 78 think ihave probz got about 65 in this paper lol harder paper deffo -
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- 30-05-2011 19:52
(Original post by Peanut)
I can't really remember but i think i said to try and recycle the waste products???? What did you put? -
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- 30-05-2011 20:05
(Original post by king1234)
same in june 2010 got 78 think ihave probz got about 65 in this paper lol harder paper deffo -
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- 1280
- 30-05-2011 20:12
(Original post by kimmey)
do you remember the question about when u had to say bond making releases energy and bond breaking absorbs energy. did it ask u to say it in terms of an endothermic reaction or exothermic reaction cheers
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