Consider a combustion of a gas composed of 60% Butane (C4H10) and 40% Propane (C3H8), the gas conversion is 100%. The gas that burns 90% of it goes to CO2 the rest goes to CO. Knowing that the oxidizer used was air and that it was fed with 18% excess. Determine the quantities of each component of the flue gas, use as a basis for calculation 1250 kmol of gas fed to the furnace per hour.