The answer key was just passed out. I don't know how these answers were received. We are using Elements of Chemical Reaction Engineering Fifth edition by Fogler. Can you explain how these answers were produced? And explain it like I'm an dingdong. Label your equations with things like "This is the design equation" "I built this equation by combining this and that equation" etc. I received a 17% on the test and I'm trying to learn but the book is difficult.

Q # 5. The reaction A +2 B 3 C is carried out in a liquid-phase CSTR (V = 1000 lit). The feed (CA0 = 0.5 mol/lit & CBo = 2.5 mol/lit) enters the reactor at a flow rate of 100 lit/min, and the conversion is found to be 70%. The reaction is first-order in each of the reactant species. (a) Find the size of the PFR needed to achieve 70% conversion of the above feed. (450 lit) (b) If a CSTR twice as large (V = 2000 lit) were used, what would be the fractional conversion? Define the effluent stream composition in terms of the concentrations of A, B, and C. (0.67)