Answer to Question #96709 in General Chemistry for m

Question #96709
If the heat of combustion for a specific compound is −1490.0 kJ/mol and its molar mass is 85.69 g/mol, how many grams of this compound must you burn to release 270.00 kJ of heat?
1
Expert's answer
2019-10-22T05:43:26-0400

"\\Delta H=-1490.0 kJ\/mol"

"M=85.69 g\/mol"

"Q=270.00kJ"

"m=?"

"m=\\frac{M\u00b7Q}{-\\Delta H}=\\frac{85.69\u00b7270.00}{1490.00}=15.53g"

Answer: 15.53g

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