Exercise #9 (15 points) = Given the following molar standard enthalpies of formation referring to room temperature: HN3(1) A-H = +264.01 kJ mol-1 NO(g) Aph = +90.25 kJ.mol-1 H2O2(1) Af = -187.78 kJ.mol-1 = compute the molar standard enthalpy for the reaction 2HN3(1) + 2NO(g) + H2O2(1) + 4N2(g) occurring at the same temperature