Hydrogen gas is produced from the steam reforming of propane gas according to the following reaction:

C H (g) + 3 H O (g) 3 CO (g) + 7 H (g)

However, the following side reaction occurs:

CO (g) + H O (g) CO (g) + H (g)

The feed contains steam and propane in a 6:1 mole ratio at 100 C and the product gas mixture emerges from the reactor at 750 C. Heat is supplied to the reactor using a hot gas at 1400 C and 1 atm at a rate of 5.00 m for every mole of propane fed to the reactor. The hot gas leaves the reactor at 900 C. Assuming the hot gas has a constant heat capacity of 40 J mol K , calculate the molar composition (% mole) of the product gas.