H₂ is produced by combining propane and steam over a nickel catalyst in a shell-and-tube reactor. C₃H₈(g)+3H₂O(g) --> 3CO(g)+7H₂(g) A synthesis gas containing propane and steam in stoichiometric proportion is fed to the reactor at 125C, and the product gas emerges at 800C. Heat is added to the reaction mixture by passing a hot gas over the outside of the tubes that contain the catalyst; the gas enters the unit at 2000C, and leaves at 1000C. The heating gas is fed to the unit at a rate of 2985 litres/mole C₃H₈ fed. The unit may be considered adiabatic. Calculate the molar composition of the product gas, assuming that the heat capacities of all the reactant and product species are constant and equal to 0.030 kJ/mole*C, and that of the heating gas is 0.040 kJ/mole*C. The heating gas may be treated as an ideal gas at 1 atm.