Molar heat of combustion Q (1 Viewer)

[NewiJapper]

This is from the dot point summary book of chemistry and for some reason I can't get the right answer!

Mass of ethanol used: 1.33g
Temperature difference: 13.3
Volume of water used: 100mL
Heat capacity of water: we all know (4.18x10^3)

Find the molar heat of combustion according to this experiment. I know it's simple but for some UNKNOWN reason I just cannot get the right answer!?!?

If you could post the correct answer with steps saying how you did it, that would be amazingly helpful

 

[thongetsu]

.1 x 4.18 x 10^3 x 13.3
=5559.4J

n(ethanol) = 1.33/46.068
=.028870365 mol

molar eat of combustion = 5559.4/.028870365
= 192,564.24 J/mol
convert to mega/kilojoules.

i think this should be it.

 

[NewiJapper]

GFSHKHF;AYI I was doing the molar mass for METHANOL :S haha Blonde moment there


Thanks though