5.04 m3/min of propane is used as fuel in a furnace to heat oil from 25 to 200o C (CPoil = 2100 J/kg.K). Temperature in combustion chamber is 1700 K. Carbon monoxide percent in stack outlet and excess air are 2% and 20%, respectively. Determine the conversion of propane and mass flow rate of oil. (Heat loss of the furnace surface is negligible and the standard enthalpy of formation of propane is 104,680 J/mol.)