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 # 1. The elementary liquid phase reaction is carried out in a 500 liter volume batch reactor. The concentrations of A and B in the feed stream are both 2-molar, and the reaction rate constant is 0.01 liter/(mol-min). A + B C (a) Calculate the time to reach 90% conversion in a batch reactor. (450 min) (b) Find the reaction time if the reaction is 1st order in B and Oth order in A, with k = 0.01/min. (230 min)