2. A coal analyzing 65.4% C, 5.3% H, 0.6% S, 1.1% N, 18.5% O, and 9.1% ash is burned so that all combustible is burned out of the ash. The flue gas analyzes 13.00% CO2, 0.76% CO, 6.17% O2, 0.87% H2,...

2. A coal analyzing 65.4% C, 5.3% H, 0.6% S, 1.1% N, 18.5% O, and 9.1% ash is burned so that all combustible is burned out of the ash. The flue gas analyzes 13.00% CO2, 0.76% CO, 6.17% O2, 0.87% H2, and 79.20% N2. All of the sulfur burns to SO2, which is included in the CO2 figure in the gas analysis (i.e., CO2 + SO2 = 13.00%). Calculate:
a. Pounds of coal fired per 100 lb mol of dry flue gas as analyzed
b. Ratio of moles of total combustion gases to moles of dry air supplied
c. Total moles of water vapor in the stack gas per 100 lb of coal if the entering air is dry
d. Percent excess air