100 mol/s of n-Pentane (C5H12) is burned with excess air in a continuous combustion chamber. A technician runs an analysis and reports that the product gas contains 0.300 mole% pentane, 5.90% oxygen, 10.2% carbon dioxide, and the balance nitrogen on a dry basis. (a) Draw a completely labelled flowchart, perform a degree-of-freedom analysis based on atomic species balances, and show that the system has -1 degrees of freedom. Interpret this result. (b) Calculate the percent excess air fed to the reactor, the fractional conversion of pentane, and the mole ratio of water vapor/mol dry gas of the product gas