What Mass of Ethanol, C₂H₅OH(l),Must Be Burned to Supply 500

Multiple Choice

What mass of ethanol, C₂H₅OH(l) ,Must be burned to supply 500 kJ of heat? The standard enthalpy of combustion of ethanol at 298 K is -1368 kJ.mol^-1

A) 126 g
B) 2.74 g
C) 16.8 g
D) 10.9 g
E) 29.7 g