A typical gas stove burner supplies a kettle filled with water at a rate of 15,000 Btu/hr with a flame temperature of 750C. The gas fed to the burner is composed of propane mixed with 10% excess air. The gas feed is initially at -20C and 1 bar and the reaction proceeds to 100% completion. Determine the mass flow rate of propane in g/sec, to the stove.
heat capacities - Nitrogen 29.12 J/molk, oxygen 29.32 J/mol K, propane 74.92 J/ mol K, carbon dioxide 37.14 J/mol k, and water 33.57 J/mol k