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?
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.
Im not getting the correct thing
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Which doesn't help me find the problem. Post your work so I can see what you've done.