4. A two-stage chemostat system containing Zymomongs mobilis is used for the conversion of xylose to ethanol under anaerobic conditions. The flow rate is =2L/h and the initial xylose concentration is 50g/L. Given td=7h,KsS=1g/L,YX/S=0.1gX/gS,YP/S=0.5g P/gS, and a conversion percentage of 75%, calculate the following values: a. Substrate and product concentrations in the effluent of reactors b. Biomass concentrations in both reactors c. Volume of each reactor d. Productivity of biomass (DX) and product (DP) for each reactor