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POLL: Chem paper 33 2013
Effervescence with acid? Certainly it was a carbonate. -
Chemistry paper 33 how was it?
Was for me; some others are saying no. -
AS PHY PRACTICAL 33
1. If the k values are close, the relationship is correct; if there's a very slight difference, for instance 25 and 21 or 0.00087 and 0.00076, then it is also correct, but you must say that there is a difference which can be attributed to random errors. 2. All measured values must be given to... -
POLL: Chem paper 33 2013
In order: Zn2+ Br- CO32- Nitrite Sulphate. -
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Chemistry paper 33 how was it?
My M was Caesium because Ar=127 and Cs is the closest Group 1 metal to that, so. -
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POLL: Chem paper 33 2013
They still had to do the tests, though, because there are marks for the observations; and they couldn't have been sure, anyway, of whether or not what they found on the Internet was correct. Though I saw it after the exam, and it was, heh. -
AS Chemistry PRACTICAL 33
I wrote nitrite too. There were bubbles of gas with dilute HCl. -
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Chem 32 ANSWERS (salts ONLY)
The salts: 2. (a) i Zn2+ ii Br- iii CO32- (b) FA6-Nitrite FA7-Sulphate EDIT: 33 not 32. -
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POLL: Chem paper 33 2013
If many people left it, then the gt will definitely be lowered. -
AS Biology paper 22 May 13th 2013
The first asked for the mode of action of the enzyme; you had to say that the substrate is complementary to the active site, that an E-S complex forms, and that the enzyme remains unaltered at the end, etc. In the second, you had to talk about the denaturation of the active site. -
AS Biology paper 22 May 13th 2013
The 3rd was a disaccharide of B-glucose. -
AS Biology paper 22 May 13th 2013
The 1st sugar was maltose, the 2nd trehalose, the 3rd cellobiose the 4th sucrose. In the epidemiological question, you had to say something to the effect of that when the number of smokers increases, the number of TB cases reported also increases. -
AS Biology paper 22 May 13th 2013
The first was maltose, the second trehalose and the last sucrose. Don't remember the name of the fourth, but it was the third structure. -
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POLL: Chem paper 33 2013
In my opinion, this paper was the finest piece of absolute DRIVEL (i.e. BULL****) that CIE has ever produced.