A stoichiometric mixture of carbon monoxide and air reacts in a combustion chamber, forms exhaust products at 3000 K and 1 bar. If the products are in chemical equilibrium, but no reactions occur between the nitrogen and the oxygen, show that the molar fraction of carbon monoxide is approximately 0.169. The products of combustion now enter a heat exchanger where the temperature is reduced to 1000 K. Calculate the heat transfer from the products per amount of substance of CO2 in the gases leaving the heat exchanger if dissociation can be neglected at the lower temperature.