# Couple of AS (Edexcel) Qs. Watch

1. I am having problems with qs: 5a,9a,11 and 14

If someone could look at them for me that would be brilliant as I don t have access to the answers & as a private candidate my tutor won t mark it for me.Rep will be given for good answers & also for answers that back up other ppl s answers/corrections.
Thanks

Here are my attempts:
5a (i) 120 X 0.13=15.6 kPa
(ii)32-12= 20 X 0.13= 2.6

9a) 2952 I added all the values in the column on the right.

2952/10600= 0.278... X100% = 27.85%

11.a)have no idea where the ester bond starts & ends
b) not sure
c) 1 gycerol +1 fatty acid
d)It has 3 fatty acids.

14a) I m gonna hae to look up how to draw a histogram.
As diastolic pressure increases deaths increase.
Deaths increase between a systolic pressure of 120-159 and start to decrease over 160mmHg
c) that pre-menopausal women are protected by their hormones against death
Attached Images
2. Topic 1 Test.pdf (716.4 KB, 1175 views)

for 9a adding all the values is correct and that's how you work out the proportation of the daily number of kj he ate.

11: the structure of a mono glyceride is incorrect. the ester linkage is:

R - O -OC -R

not R - OC - R as presented in that paper

I'd refuse to answer the rest of the question if i were you as the presented information is incorrect.

14a) it's just a bar graph with the data measured as the area of the bar not just the height of it. - Simple!

your answer for 14b is wrong though. Diastolic pressure has little effect on the death rate. more people die at systolic pressures of 160+ than below 160.

how did you reach the that conclusion for 14c?
4. (Original post by Pheonixx)

for 9a adding all the values is correct and that's how you work out the proportation of the daily number of kj he ate.

11: the structure of a mono glyceride is incorrect. the ester linkage is:

R - O -OC -R

not R - OC - R as presented in that paper

I'd refuse to answer the rest of the question if i were you as the presented information is incorrect.

14a) it's just a bar graph with the data measured as the area of the bar not just the height of it. - Simple!

your answer for 14b is wrong though. Diastolic pressure has little effect on the death rate. more people die at systolic pressures of 160+ than below 160.

how did you reach the that conclusion for 14c?
First of all thank you so much for looking through those for me I REALLY appreciate it.
So Q.9a is ok?
I see wher I went wrong on the diastolic pressure.I was reading it across 13-14-17 instead of across & down & comparing the maximum values of each group.(if that makes any sense)Thanks!

For 14c it mentioned it in my textbook on some study done...

I m stuck on the histogram part,I don t know how to start.Do I put the values in order of size?
I haven t done these in a while,so I ve forgotten.Thanks for all of your help
5. answers to the q can be found here http://www.thestudentroom.co.uk/show...php?p=28788021
,I finally got help.

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