The complete combustion of ethanol, C2H5OH (FW = 46.0 g/mol), proceeds as follows: С2H5OH(1) + 3 O2 (g) -+ 2 CO2 (g) + 3 H2O(1) AH = - 555 kJ What is the enthalpy change for combustion of 15.0 g of ethanol?