Producing required energy from Combusting Methane

[krayziemuzick]

Homework Statement

How much methane, CH4 is must be burned to produce 6.38x10^6j of energy

Homework Equations

CH4 + 3O2 --> CO2 + 2H2O

The Attempt at a Solution

This is actually the second part of a pretty long multi part question. I couldn't find out how to figure out the amount of energy produced by this reaction. In the first part of the question I found how how much energy was required to raise 5.8x10^5 grams of air (specific heat of 1.1 j/(gxC) by 10C. Which is where I get the energy from. Could anyone please guide me as to where to start? I have been looking in my book but have not found anything.

 

[Borek]

You need enthalpy of methane combustion. It is either given somewhere in the question, or can be calculated from the previous data, or there are tables in your book, where this information is listed.