Homework Help: Chemistry 2 ap

Posted by Peanut on Thursday, October 28, 2010 at 2:48pm.

How much heat energy is produced when 31.6 grams of propane are burned?

I asked my teacher and she said it would be a stochiometry problem but im still confuded:/

Chemistry 2 ap - Peanut, Thursday, October 28, 2010 at 2:49pm
*confused lol(:
Chemistry 2 ap - DrBob222, Thursday, October 28, 2010 at 4:41pm
Yes. I wondered if confuded was a new word I should learn.
I think the problem is a stoichiometry problem IF you know the heat of combustion. Do you know that? If so, then
C3H8 + 5O2 ==> 3CO2 + 4H2O
So it takes 44 g C3H8 to generate ??kJ (the heat of combustion generally given in kJ/mol), then
heat produced by 44 g = ?? kJ x (31.6/44) =

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