Chemistry Salters F332 june 2010 Watch

Kooper
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#421
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#421
(Original post by hahahah)
when you had to underline electrophic, subsitution etc. i kept getting confused so in the end all of them were underlined, then i crossed everything out and wrote below it that it was electrophic addition, do u think i will get the marks because it was written and not underlined?
You should, but you know how examiners can be...
If it was clear they'll probably give you the marks.
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Jamesrb
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#422
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(Original post by Kooper)
Was that for the reflux one? If so, I put orange to green (it says orange in my revision guide), but I bet they'll allow both yellow and orange since they normally give a range of colours in the mark scheme.
I went for Orange to Green too, using the Salters revision guide.
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Kooper
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#423
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#423
What on earth is a functional group? Is it different from what homologous series it is in?
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kironkabir
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#424
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(Original post by hahahah)
i thought the colour change was yellow to green because it had become oxidised?
Dude, it's ORANGE to green.

I saw somewhere that a guy put yellow to green a few years back in some past paper, and it was bloody wrong.

Sorry.

However, just hope that the mark schemes have changed and they allow a range of answers, since yellow is somewhat very similar to orange. Kinda
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FayeFayeFaye
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(Original post by PotterLover)
sulphur**

And, for the ppm, I divided by 100 and multiplied by 10,000!!!!! Oh God! What have I done???
I did that!! As i saw a question like that in the past papers so my answer was 0.14. I hope that was right!!
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mattmitch22
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#426
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(Original post by FayeFayeFaye)
I did that!! As i saw a question like that in the past papers so my answer was 0.14. I hope that was right!!
I got 0.014 :-/
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kironkabir
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(Original post by FayeFayeFaye)
I did that!! As i saw a question like that in the past papers so my answer was 0.14. I hope that was right!!
Oops.

There was 2 different methods for getting the answer.

First way: 0.0014 x 1,000,000 / 100 = 14

OR 0.0014 x 10,000 = 14

Then you divide by 1000 to finally give = 0.014 ppm.

Since in the A.N. it talks about ratios of H : D being 1000 : 1.
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FayeFayeFaye
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#428
(Original post by mattmitch22)
I got 0.014 :-/
Did you divide by 1,000?
I just checked my salters revision guide and it said u divide by 10,000.
Dont worry though Ive lost so many marks on this paper and its a re-sit!
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FayeFayeFaye
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(Original post by kironkabir)
Oops.

There was 2 different methods for getting the answer.

First way: 0.0014 x 1,000,000 / 100 = 14

OR 0.0014 x 10,000 = 14

Then you divide by 1000 to finally give = 0.014 ppm.

Since in the A.N. it talks about ratios of H : D being 1000 : 1.
Oh dear! I did not read that.....
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Kooper
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#430
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(Original post by kironkabir)
Oops.

There was 2 different methods for getting the answer.

First way: 0.0014 x 1,000,000 / 100 = 14

OR 0.0014 x 10,000 = 14

Then you divide by 1000 to finally give = 0.014 ppm.

Since in the A.N. it talks about ratios of H : D being 1000 : 1.
Oh dear. I didn't use H : D ratios at all. What was the question?
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Flunking
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#431
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#431
I couldn't remember the percentage of nitrogen on earth I'd say for a good one third of the questions I was just educatedly guessing. I hope the A grade is <70. What was it in January?
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Kooper
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(Original post by Flunking)
I couldn't remember the percentage of nitrogen on earth I'd say for a good one third of the questions I was just educatedly guessing. I hope the A grade is <70. What was it in January?
75. If it's that high again, I don't think anyone will get an A!
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mhasan
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#433
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(Original post by kironkabir)
Sayeed?
Is this you?
YES it is me! LOL.

Whats with the spelling? I'm not that gay guy from eastenders!
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kironkabir
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#434
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(Original post by Kooper)
Oh dear. I didn't use H ratios at all. What was the question?

Basically the question had a very sly trick to it.

It mentioned something about calculating the deuterium ppm or something like that in water.

Since you gotta know that deuterium is an isotope of hydrogen and water is made up of hydrogen too, you have to implement your knowledge of ratios and all that jazz.
It was lucky that the A.N. gave that info about the ratios, otherwise a lot of people would've been screwed over by that question...

Gosh, The Atmosphere module is such a waste.

At least A2 Chemistry is easier to do.
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kironkabir
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#435
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(Original post by mhasan)
YES it is me! LOL.

Whats with the spelling? I'm not that gay guy from eastenders!
The gay guy from Eastenders is spelt SYED.

I thought Sayeed was your real name spelling.
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hahahah
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#436
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#436
guys does anyone have the full answers? please post them up here
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ejw93
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#437
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Surely it was iodine that was oxidised, seen as it went from 1- to 5+.
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mhasan
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(Original post by ejw93)
Surely it was iodine that was oxidised, seen as it went from 1- to 5+.

It went from 5+ (in the IO3-) ti -1 (in the I-) so in fact iodine was reduced!
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mattmitch22
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(Original post by kironkabir)
Oops.

There was 2 different methods for getting the answer.

First way: 0.0014 x 1,000,000 / 100 = 14

OR 0.0014 x 10,000 = 14

Then you divide by 1000 to finally give = 0.014 ppm.

Since in the A.N. it talks about ratios of H : D being 1000 : 1.
YEEEEEEP!
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rainbowsss
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#440
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yeh but it was the other way round in the equation then the previous question they just asked you, if you get my drift, soz i cant memba the q
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