Parallel liquid-phase reactions of A R (second-order) with rate constant k1 and A S (first-order) with rate constant k2 are carried out in two CSTRs connected in series to produce R and S. The feed stream has a concentration of CAo = 2.2 mol/L and CRO = CSO = 0. The first CSTR has a residence time of 4 minutes and the second CSTR has a residence time of 6 minutes. Given that the concentrations of the components in the effluent of the first CSTR are CA1 = 0.9 mol/L, CR1 = 0.9 mol/L, and CS1 = 0.4 mol/L, calculate: a) the rate constants k1 and k2 for the parallel reactions, b) the concentrations of the components in the effluent of the second CSTR, and c) the overall conversion of A.