1. The problem statement, all variables and given/known data A fuel oil burned in a steam generator has a composition that may be represented as C15H32. A dry basis analysis of the flue gas yields the following molar composition: CO2 10.111%, CO 1.000%, O2 5.611%, and N2 83.278%. Determine the following: (a). The percent excess air used to burn the fuel oil; (b). The flue gas molar composition on a wet basis, reporting all constituents, including water vapor, to the nearest 0.001%; and (c). The dew point temperature (°C) of the flue gas, if the pressure exiting the combustion stack is 180 kPa 2. Relevant equations Excess air = (actual air- stoichiometric air)/actual air 3. The attempt at a solution Since there is CO in the product, it means that part of the fuel undergoes incomplete combustion. I am trying to find the percentage of the fuel that undergoes the full combustion and the percentage that undergoes partial combustion. C5H32 + 13 O2 ->5CO2 + 16 H2O ------>complete combustion C5H32 + 10.5 O2 ->5CO2 + 16 H2O ---------> Partial combustion I am not sure where to go next.