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# Moar enthalpy changes watch

1. Question 2 part b what do i do?

Samba123
Attached Files
2. 2.1 Exercise 1 - measuring enthalpy changes.doc (26.5 KB, 81 views)
3. (Original post by thefatone)
Question 2 part b what do i do?

Samba123
How many moles of Mg react? What's the molar mass of Mg?
4. (Original post by thefatone)
Question 2 part b what do i do?

Samba123
Might have a go at doing some of these later. Thanks for the resource

Are there answers? I haven't got the slightest clue about enthalpy atm.
5. (Original post by EricPiphany)
How many moles of Mg react? What's the molar mass of Mg?
1 mol of Mg reacts with 1 mol of CuSO4

Relative atomic mass of Mg is 24.3
6. (Original post by Carrot_Cake_13)
Might have a go at doing some of these later. Thanks for the resource

Are there answers? I haven't got the slightest clue about enthalpy atm.
you can have all these aswell, they're all my homework in for tomorrow and i'm still on the first document on question 2 ;_;
Attached Files
7. 2.1 Exercise 2 - Bond dissocation enthalpies.doc (33.5 KB, 56 views)
8. 2.1 Exercise 3 - Hess' Law.doc (40.0 KB, 93 views)
9. ANSWERS TO 2.1 exercises.doc (26.5 KB, 83 views)
10. (Original post by thefatone)
Question 2 part b what do i do?

Samba123
Close lol. Write out the full balanced equation for the reaction and consider the number of moles of each reactant
11. (Original post by thefatone)
1 mol of Mg reacts with 1 mol of CuSO4

Relative atomic mass of Mg is 24.3
Now, how many mol of Cu reacts? You are given the concentration and volume.
12. (Original post by thefatone)
you can have all these aswell, they're all my homework in for tomorrow and i'm still on the first document on question 2 ;_;
Ty

Err good luck? It looks like there is loads to do.
13. (Original post by samb1234)
Close lol. Write out the full balanced equation for the reaction and consider the number of moles of each reactant
Mg+CuSO4----> MgSO4+Cu
1 mole of anything reacts or forms 1 mole of anything on the other side

(Original post by EricPiphany)
Now, how many mol of Cu reacts? You are given the concentration and volume.
oh ok i get it right i got the right answer now

also i'm tagging u in chem stuff i need help with too xD
14. (Original post by Carrot_Cake_13)
Ty

Err good luck? It looks like there is loads to do.
if i can't do it then i'll tell him it was too difficult then i'll spend more time and finish it off

Also i'll make another thread with question about those documents so save them pls
15. :
(Original post by thefatone)
if i can't do it then i'll tell him it was too difficult then i'll spend more time and finish it off

Also i'll make another thread with question about those documents so save them pls
Smart decision

Will do!

(Original post by thefatone)

also i'm tagging u in chem stuff i need help with too xD
Haha and I'll be following your posts for any chem qs I could perhaps also be stuck on.
16. (Original post by thefatone)
Mg+CuSO4----> MgSO4+Cu
1 mole of anything reacts or forms 1 mole of anything on the other side

oh ok i get it right i got the right answer now

also i'm tagging u in chem stuff i need help with too xD
OK no prob, I'll help if I'm on, and if I can

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