Balance the combustion reaction of chrysene (C18H12) at 298K.C18H12(s)+ O2(g) CO2(g) + H2O(l)What is the value of ng for the combustion reaction?ng = molWhat is Hcomb of chrysene if Ecomb = -8942.6 kJ/mol?Hcomb = kJ/molWhat is the heat of formation of chrysene?Hf = kJ/mol