could you solve the a, b, and c step by step clearly?

Question 5 (20 pts). A steady state process consisting of an absorption tower and a stripping tower is used to separate the components of a gas containing 28.0mole% carbon monoxide (CO) and the balance ethane. A stream of this gas is fed to the bottom of the absorber. A liquid containing 0.485mole% dissolved CO and the balance ethanol is recycled from the bottom of the stripper and fed to the top of the absorber. The product gas leaving the top of the absorber contains 1.12mole%CO and essentially all of the ethane fed to the unit. The CO rich liquid ethanol solvent leaving the bottom of the absorber is fed to the top of the stripper and a 100 moles/h stream of nitrogen gas (N2) is fed to the bottom. Ninety percent of the CO in the liquid feed to the stripper comes out of solution in the column, and the nitrogen/ CO stream leaving the column passes out to the atmosphere through a stack. The liquid stream leaving the stripping tower is the 0.485mole%CO solution recycled to the absorber. The absorber operates at temperature Ta and pressure Pa and the stripper operates at Ts and Ps. Ethanol may be assumed to be nonvolatile, that is, none enters the vapor phase in either column and N2 may be assumed insoluble in ethanol. a) Taking a basis of 70moles/h of product gas leaving the top of the absorber, draw and label a flowchart of the process. For the stripper outlet gas, label the component molar flow rates rather than the total flow rate and mole fractions. Do the degree-of-freedom analysis and write in order the equations you would solve to determine all unknown stream variables. b) Circle the variable(s) for which you would solve each equation (or set of simultaneous equations). c) Calculate the fractional CO removal in the absorber (moles absorbed/mole in gas feed) and the molar flow rate and composition of the liquid feed to the stripping tower