k should have units mol/L-min

\# 3. The liquid-phase, constant density, isothermal reaction (AB) is carried out in a flow reactor system. The reaction is first-order in A and first-order in B, with k =0.05Li/molmin. A feed stream (CAo=2.0mol/Li and CBo=0) is to be processed at a rate of 200Li/min to achieve 90% conversion of A, The following configurations are considered: (a) CSTR-PFR combination (which one should come first) - find the minimum total volume set-up. (b) A set of equal-sized CSTRs (give the total reactor volume) (c) Can we use a single PFR for this reaction? Why not