1.3. A 2400-MW. power plant has a coal pile containing 2,500,000 short tons of coal with a heating value of [25,000; 26,400; 27,800; 29,200; 30,600] kJ/kg. The plant operates at a heat rate of 9200 Btu/kWh. If the capacity factor is [0:6; 0.65; 0.7; 0.75; 0.8], determine the number of days that the coal will last and the mass. of coal, in Ibm, that is actua!ly converted into energy.