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# TOO much Enthalpy stuff watch

1. For question 5 why do i get -5.68kJ/mol instead of -58.6kJ/mol?

here's what i've done
q=mc▲t
100*4.18*0.68=284.24J

n=(v*c)/1000

=(50*1)/1000
=0.05mol

H=Q/mol
=284.24/0.05
Attached Files
2. 2.1 Exercise 1 - measuring enthalpy changes.doc (26.5 KB, 59 views)
3. bump
4. Either its a typo or my mental maths is awful lol
5. (Original post by thefatone)
For question 5 why do i get -5.68kJ/mol instead of -58.6kJ/mol?

here's what i've done
q=mc▲t
100*4.18*0.68=284.24J

n=(v*c)/1000

=(50*1)/1000
=0.05mol

H=Q/mol
=284.24/0.05
Error in bold above.
6. (Original post by EricPiphany)
Error in bold above.
Indeed, that's what i get for not reading the question carefully lol
7. (Original post by samb1234)
Indeed, that's what i get for not reading the question carefully lol
Happens to the best of us. Especially on TSR
8. (Original post by EricPiphany)
Happens to the best of us. Especially on TSR
i'll look at it tomorrow X_X i'm too tired and next week is gonna be a ****storm for me dofe kitcheck tomorrow, c1 test, piano lesson after school, and i gotta get all this chem done by tuesday aswell
9. (Original post by EricPiphany)
Error in bold above.
thanks a bunch it's supposed to be 0.1

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