Draw a process flow chart label the unknown variables and

Question

Write the right answer of the given question

Question- A methane stream at 150o C and 70 atm is fed to a combustion furnace at a rate of
0.0496 m3/s. additionally, air is added to the furnace at a rate of 1190 mol/s. The composition of the furnace effluent (outlet) has been partially measured, and the result shows the flow rate for three components: 20 mol/s CH4, 70mol/s CO2 and 10 mol/s CO.

Part A- Draw a process flow chart, label the unknown variables and fully balance the process.

Part B- Write and balance the combustion reaction(s) that are taking place.

Part C- What is the percent excess air fed to the furnace?

Part D- What is the composition of the product gas on a wet-basis and on a dry-basis?

I need help to clarify the composition of the product gas on a wet basis.