1. A sample of dried Appanoose County coal has a mass analysis of 71.1% carbon, 5.1% hydrogen (H), 9.0% oxygen (O), 1.4% nitrogen (N2), 5.8% sulfur, and the rest noncombustible ash. For complete combustion with the theoretical amount of air, determine
(a) the amount of SO2 produced, in kg per kg of coal.
(b) the air-fuel ratio on a mass basis.
2. Octane (C8H18) burns completely with 120% of theoretical air. Determine
(a) the air-fuel ratio on a molar and mass basis.
(b) the dew point temperature of the combustion products, in 8C, when cooled at 1 atm.