A fuel gas containing 70 mole% of methane (CH 4 ) and the balance of ethane (C2 H 6 ) is burned completely using 30% excess dry air . Assume complete combustion.

a) Draw and label the complete flow chart.

b) Perform the degree of freedom analysis using either extent of reaction (EOR)

c) Given your result in part b) do you have enough information to calculate the molar composition of the product gas? If yes, state why. If not, what information you need or can assume on your own?

d) Write down all balance equations you need to calculate the molar composition of the product gas but do not solve.