Two pollutants that form in automobile exhaust are CO and NO. An environmental chemist must convert these pollutants to less harmful gases through the following: CO(g) + NO(g) → CO2(g) + ½ N2(g) ΔH = ? Given the following information, calculate the unknown ΔH: (1) CO(g) + ½ O2(g) → CO2(g) ΔH = -283.0 kJ (2) N2(g) + O2(g) → 2NO(g) ΔH = 180.6 kJ