AP Chemistrymediummcq1 pt
When 1.0 g of a fuel burns, 45 kJ is released. What is the fuel's enthalpy of combustion in kJ/mol if its molar mass is 60 g/mol?
A.−2700 kJ/mol
B.−45 kJ/mol
C.+2700 kJ/mol
D.−0.75 kJ/mol
Explanation
Core Concept
Per mole: 45 kJ/g × 60 g/mol = 2700 kJ/mol, negative because combustion releases heat.
Correct Answer
A−2700 kJ/mol
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