The energy change (ΔH) for the reaction CO(g) + (1)/(2)O2(g) → is?
(ΔHi(CO) = -110.4 kJ mol–) (ΔHi(CO2) = -393 kJ mol–)
- -503.7 kJ
- +503.7kJ
-
-282.9 kJ
- +282.9 kJ
- +393.3 kJ