Carbon monoxide at 20oC and 100 kPa enters a combustion chamber and burns with 25% excess air

Question:

Carbon monoxide at 20oC and 100 kPa enters a combustion chamber and burns with 25% excess air entering at the same temperature and pressure. An equilibrium mixture consists of CO2, CO, O2, and N2 exits at 1200oC and 100 kPa. Determine
The heat transfer (Q) to the surroundings in kJ/kmol of CO.