A coal from Utah which has an ultimate analysis (by mass) of 61.40 percent C, 5.79 percent H2, 25.31 percent O2, 1.09 percent N2, 1.41 percent S, and 5.00 percent ash (noncombustibles) is burned with the stoichiometric amount of air, but the combustion is incomplete, with 5 percent of the carbon in the fuel forming carbon monoxide. Calculate the mass fraction and the apparent molecular weight of the products and the mass of air required per unit mass of fuel burned. Use data from the tables.

The mass fraction of CO2 is ___ , the mass fraction of CO is ___ , the mass fraction of H2O is ___ , the mass fraction of SO2 is ___ , the mass fraction of N2 is ___ , and the mass fraction of O2 is ___. The apparent molecular weight of the product gas is ___ kg/kmol. The airfuel mass ratio is ____ kg air/kg fuel.