9. Consider the combustion of propane: C3H8(g) + 5O2(g) → 3CO2(g) +4H2O(l) (10 %) (A) Using standard enthalpies of formation to calculate the enthalpychange (ΔHo) for the reaction.compound C3H8(g) CO2(g) H2O(l)ΔHfo (kJ/mol) -104 -394 -286