A 500 MW coal-fired power plant is burning coal with a heating value of 12,000 Btu/lb. The coal contains 2.0% sulfur. The plant has a thermal efficiency of 38%, and uses an air/fuel ratio of 14:1 (mass basis). Calculate (a) the coal firing rate in lb/hr, (b) the fuel gas flow rate in scfm, and (c) the SO2 removal efficiency needed to meet a standard of 1.4 lb/MWh gross electrical energy output.