1. Consider an enzymatic reaction takes place in a batch reactor. You are asked to determine the reaction time necessary for the conversion of 80%, if the reaction obeys Michaelis Menten kinetics. The initial concentration of substrate is 0.7 mol/L with the kinetic constants of V_max=0.05 mol/(g.min) and K_m=0.6 mol/L. Solve by hand and show all calculation steps.