The final solution for (a) is 6216 m3/h .. show all steps please

A gas mixture analyzing 6% pentane, 10% butane, 15% propane, 10% ethane, 55% methane and 4% nitrogen by volume is burned at a rate of 100 m3 per hour at 350 kPa and 300 K with 12% excess air. Air is supplied at 100 kPa and 300 K. It is found that the flue gas which leaves at 105 kPa and 800 K contains CO2 and CO in the mole ratio 18:1. Determine the following: (a) The rate of air supply (m3 per hour) (b) The Orsat analysis of flue gas (c) The flue gas produced (m> per hour)