C(g)+2H2(g)+O2(g) delta H1 CH2(g)+O2(g) delta H2

C(g)+2H2(g)+O2(g) delta H1 CH2(g)+O2(g) delta H2 CO2(g)+2H2O delta H3 Berdasarkan diagram diatas, hubungan delta H1, delta H2, delta H3 yang benar adalah .... a) delta H2=delta H1-delta H3 b) delta H2=delta H1+delta H3 c) delta H3=delta H1-delta H2 d) delta H3=delta H1delta H2