• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Biology paper 2

Messages
15
Reaction score
2
Points
3
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 ,..?
 
Messages
136
Reaction score
39
Points
38
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 :)
 
Messages
5
Reaction score
4
Points
3
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.. ;)
 
Messages
15
Reaction score
2
Points
3
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:
 
Messages
5
Reaction score
4
Points
3
h3y guys today my mAths pap3r was tErrible..:( am geetiing scAr3d nOw... if i d0n't pass z3n... :'(... w0t will happ3n..?'
 
Messages
176
Reaction score
46
Points
28
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..
 
Messages
2
Reaction score
0
Points
1
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.. :)
 
Messages
136
Reaction score
39
Points
38
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?!
 
Top