Question

The enthalpies of formation of the compounds in the combustion of methane, mc019-1.jpg, are CH4 (g): mc019-2.jpgHf = –74.6 kJ/mol; CO2 (g): mc019-3.jpgHf = –393.5 kJ/mol; and H2 O(g): mc019-4.jpgHf = –241.82 kJ/mol. How much heat is released by the combustion of 2 mol of methane?

A. mc019-5.jpg80.3 kJ
B.mc019-6.jpg802.5 kJ
C.mc019-7.jpg1,605.1 kJ
D.mc019-8.jpg6,420.3 kJ