Nitroglycerin (C3H5N3O9) undergoes the spontaneous explosive reaction
4C3H5N3O9(l)→12CO2(g)+10H2O(g)+6N2(g)+O2(g)

In one measurement, exploding 10.0 gof nitroglycerin in a calorimeter surrounded by 2.00 Lof water increased the water temperature from 15.0∘C to 22.4∘C. The standard enthalpies of formation for carbon dioxide and water vapor are -393.5 kJ/mol and -241.8 kJ/mol, respectively.

What is the heat of combustion of nitroglycerin?