Homework Help: chemistry

Posted by :) on Sunday, October 21, 2012 at 10:29pm.

If the heat of combustion for a specific compound is -1310.0 kJ/mol and its molar mass is 75.45 g/mol, how many grams of this compound must you burn to release 708.60 kJ of heat?

chemistry - DrBob222, Sunday, October 21, 2012 at 10:32pm
1310 kJ/mol x ?mol = 708.60 kJ.
Solve for ?mol.

Then mol = grams/molar mass. You know mol and molar mass, solve for grams.
chemistry - :), Sunday, October 21, 2012 at 10:39pm
Im not getting the correct thing
chemistry - DrBob222, Sunday, October 21, 2012 at 11:15pm
Which doesn't help me find the problem. Post your work so I can see what you've done.

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