Chemistry Unit 3 exam discussion here >>>>

[Jinnah]

How was the exam?

 

[Kokeeto]

Weird!

 

[shoaeb]

How was the exam?

My exam was really messed up it was soo different than the ones i had practised..goddd

 

[U stalking ME]

It wasnt that bad!! Only the last question was hard...:S

 

[yousef0074]

Yeah, some questions were annoying such as the one with the Hess cycle

 

[shoaeb]

i messed up all the questions..the hess cycle..im not sure i just guessed it i got my final answer as +4
and then the last question..i messed it up too..and i messed up the organic chem..i think il have to go for a resit.

 

[shoaeb]

if only they didnt change the format i wouldve done much better..

 

[shoaeb]

now i have got physics u3 on friday..i havent started it yet..im wondering if any one of you can help me out with that

 

[PUSHPAK1321]

Went ver ywell for me....THANK GOD. An "A" hoprfully

 

[Cuteangel]

i was easy but the question with hess's law was really weird my answer was -4 :S

 

[Cuteangel]

btw what was the last question? i forgot

 

[U stalking ME]

btw what was the last question? i forgot

crucible container one.

 

[U stalking ME]

i was easy but the question with hess's law was really weird my answer was -4 :S

it was 64 kj/mol

 

[RedRose91]

http://www.xtremepapers.com/community/threads/chemistry-unit-3b-may-2012.14631/

 

[RedRose91]

it was 64 kj/mol

I GOT +4 TOOOO !!!
how the heelllll did u get 64 man ???? u mean POSITIVE 64?? wtever it is.. HOW DID U GET IT? O.O

 

[RedRose91]

i was easy but the question with hess's law was really weird my answer was -4 :S

i got +4 instead !!!!! :|

 

[RedRose91]

te

My exam was really messed up it was soo different than the ones i had practised..goddd

tell me about it :'(((((

 

[U stalking ME]

I GOT +4 TOOOO !!!
how the heelllll did u get 64 man ???? u mean POSITIVE 64?? wtever it is.. HOW DID U GET IT? O.O

everyone in my centre got that

 

[RedRose91]

everyone in my centre got that

got 64???
how do u get it then ??? wt did u guys do ???

 

[U stalking ME]

got 64???
how do u get it then ??? wt did u guys do ???

delta H1 was +30 kj/mol
delta H2 was - 34 kj/ mol
delta Hr was = delta H1 - delta H2
= 30 - (-34) = 64 kj/mol