Isooctane (2,2,4-trimethylpentate), one of the many hydrocarbons that make up gasoline, burns in air to give water and carbon dioxide.
2C8H18 + 25O2 (g)--> 16CO2 (g) + 18H2O
Delta H= -10,922 kJ/mol-rxn
What is the enthalpy change if you burn 839 mL of isooctane (density = 0.69 g/mL)