A gas mixture of 1 pound mol carbon monoxide, 1 pound mol nitrogen, and 1 pound mol

Question:

A gas mixture of 1 pound mol carbon monoxide, 1 pound mol nitrogen, and 1 pound mol oxygen at 77 F, 20 lbf/in 2, is heated in a constant pressure SSSF process. The exit mixture can be assumed to be in chemical equilibrium with CO2, CO, O2, and N2 present. The mole fraction of CO2 at this point is 0.176. Calculate the heat transfer for the process.