The engines of the lunar module of Apollo 11 used methylhydrazine (CH3NHNH2) and dinitrogen tetraoxide. They
react as follows:
4 CH3NHNH2(l) + 5 N2O4(l) → 4 CO2(g) + 12 H2O(l) + 9 N2(g)
Calculate the enthalpy change for the reaction using the following data:
∆Hf: CH3NHNH2(l) = +53, N2O4 (l) = -20, CO2(g) = -393, H2O(l) = -286 kJmol-1