Chem p12

[msk]

can please some one help me with this w04 q4 and w06 q9...i always have problem with these type of questions!

 

[utsav156]

dude i dont wanna sound rude but can u post an attachment!!

 

[mrpaudel]

Let me know which varient are u talking bout...!! always do post the varient when u dont attach the link.!!

 

[msk]

http://www.xtremepapers.me/CIE/International A And AS Level/9701 - Chemistry/9701_w04_qp_1.pdf
[http://www.xtremepapers.me/CIE/International A And AS Level/9701 - Chemistry/9701_w06_qp_1.pdf/url]

 

[msk]

q4 of the first link and q9 of the second one!

 

[workinghard]

4 da 1st que u subtract da original proton no from da given mass no of dese elemnts
u ll c dat all ll hv total no of neutrons as 126 except 4 D where da no f neutrons r 123... so its unstable
let me looka t da other ques!

 

[msk]

4 da 1st que u subtract da original proton no from da given mass no of dese elemnts
u ll c dat all ll hv total no of neutrons as 126 except 4 D where da no f neutrons r 123... so its unstable
let me looka t da other ques!

sorry q3 of first link!

 

[workinghard]

kkk !

 

[workinghard]

1st ques ,,, in gases volume ratio is mole ratio
n given equation is CH3SH + 3O2 --> CO2 + SO2 + 2H20
i mole of CH3SH reacts wid 3 mol f O2 2 produce 4 moles of gases in total from da eq
so wen 60cm3 is introduced of O2 only 3 mol ll react n 3 ll remain
da resulting overall no of gases ll b 70 cm3 or 7 mol but since da mixxture is cooled 2 rtp da H2O ll condende n only 5 mol or %) cm3 ll remain
4 2nd ques i m tryin to built a solved eq in paint so wait...

 

[workinghard]

hope dis helpx!

 

[msk]

thanks but i didn't get the first explanation!

 

[workinghard]

i chkd it yarra n it is C 4 sure den CHEERS 2 u u no how 2 do these :beer:
kkk ll try again.. wait!

 

[workinghard]

deleted

 

[DeathDealer]

http://www.xtremepapers.me/CIE/Internat ... _qp_11.pdf"
.
Cn Some1 Xplain QUES 28 ? plzzzzzzzzz

 

[workinghard]

deathdealer itx Sn1 mechansm since da molecule is protected by 3 sides by methyl groups attached 2 carbon so OH cant attack it
n hence da rate of reaction only depends on da organic mol mentioned ... geddit?

 

[DeathDealer]

Ohhhhhhhhhhhh GOOOSHhhh.............!
Silly meh
ThanX Mate

 

[workinghard]

no problemo!

 

[DeathDealer]

n Wot ABout dis QUES ?
http://www.xtremepapers.me/CIE/Internat ... _qp_12.pdf
.
Ques 4 n 40

 

[workinghard]

its B for 4 cux O is elctronegative n hx -ive dipole n H hs +ive dipole
4 40 its C cux one mol of monomer can nvr make one mole of polymer ... polymer is made up of many repeat units...

 

[DeathDealer]

hmmmmmm Xactly
ThanX