molar heat of combustion (1 Viewer)

[Cobra]

hey dudes, i've totally forgotten how to do the molar heat of combustion formula. I no its "Delta H = -mC * Delta T" like the deltas are the triangles representing change, i think.... I've conducted an experiment trying to work out the molar heat combustion value of Ethanol which is 1360 kj/mol, but from my working out i cant remember how to get it
can someone please tell me what each variable means, like m, c, delta t
cheerio

 

[pLuvia]

ΔH kJ/mole = -mcΔT

m = mass of water heated (kg)
c = specific heat capacity 4.18x10³ J/kg K
ΔT = change in temperature

 

[Cobra]

ΔH kJ/mole = -mcΔT

m = mass of water heated (kg)
c = specific heat capacity 4.18x10³ J/kg K
ΔT = change in temperature

thanx dude, heaps of help, it really reinforced it for me since u posted it 3 times =P
s2

Cheers! ^.~

 

[pLuvia]

My bad, all fixed now

 

[Riviet]

The server was very very slow last night, hence the multiple clicks on "post reply" resulting in multiple posts. You might also like to know that the specific heat capacity (C=4.18) is for water and is a constant whenever you heat water in a molar heat of combustion prac. Other metals have their specific heat of capacity as well.

 

[Cobra]

cool, must remember those facts man i gotta start cramming now
thanx dudes =D