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Biology paper 2

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hey guys ... CIE just replied me !!
he wrote ..
Dear Sir/Madam
Thank you for your email dated 27 October.
Examiners have clear instructions for dealing with these types of situations. The candidate will not be disadvantaged in any way.
Kind regards


what do he trying to say actually ,..?
 
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hey guys ... CIE just replied me !!
he wrote ..
Dear Sir/Madam
Thank you for your email dated 27 October.
Examiners have clear instructions for dealing with these types of situations. The candidate will not be disadvantaged in any way.
Kind regards

what do he trying to say actually ,..?
The sentence "The candidates will not be disadvantaged in any way" just tells that they won't reject your answers or treat you unfairly :D Which is good so now you can relax :)
 
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hUmm cAmbridge jUst told yii3w zat they won't reject or object zE answers zat you have put.. zAt's al... they wOnt penalise yii3w.. so chill and dOn;t worry ya.. ;)
 
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hey guys ... can u guys do me a favor ?
my chemistry is jerk ... even though i have seen once and twice the ms
solve this question for me ..
what volume oxygen ,measured at room temperature and pressure is required for the complete combustion of 8.65g of H2S?
equation : 2H2S+3O2 ->2SO2+2H2O
ans : 9.13
:(:cry:
 
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h3y guys today my mAths pap3r was tErrible..:( am geetiing scAr3d nOw... if i d0n't pass z3n... :'(... w0t will happ3n..?'
 
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h3y guys today my mAths pap3r was tErrible..:( am geetiing scAr3d nOw... if i d0n't pass z3n... :'(... w0t will happ3n..?'
I'm sorry, but this is a thread made to discuss the "BIOLOGY" paper. And if you're looking for sympathies, make another thread for that..
 
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hey guys ... can u guys do me a favor ?
my chemistry is jerk ... even though i have seen once and twice the ms
solve this question for me ..
what volume oxygen ,measured at room temperature and pressure is required for the complete combustion of 8.65g of H2S?
equation : 2H2S+3O2 ->2SO2+2H2O
ans : 9.13
:(:cry:

2 of H2S ~ 3 of O2
1 of H2S ~ 3/2 of O2
34.1 g of H2S ~3/2 * 32g of O2
34.1g of H2S ~ 48 g of O2
1g of H2S ~ 1.41 of O2
given, 8.65 g so, 8.65 of H2S ~ 1.41* 8.65g of O2
= 12.2g of O2

moles= mass/mr
so, O2 mr= 32
12.2/32 =0.38 mol

moles= volume /24 at room temp. and pressure
0.38=volume/24
so, volume = 9.13dm3.. :)
 
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2 of H2S ~ 3 of O2
1 of H2S ~ 3/2 of O2
34.1 g of H2S ~3/2 * 32g of O2
34.1g of H2S ~ 48 g of O2
1g of H2S ~ 1.41 of O2
given, 8.65 g so, 8.65 of H2S ~ 1.41* 8.65g of O2
= 12.2g of O2

moles= mass/mr
so, O2 mr= 32
12.2/32 =0.38 mol

moles= volume /24 at room temp. and pressure
0.38=volume/24
so, volume = 9.13dm3.. :)


I think I died a little inside looking at this answer :|
Chemistry, Y U DO THIS TO ME?!
 
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