(20 points) A 3-ft diameter CSTR is equipped with a 1-ft diameter flat-blade turbine. At 300 rpm the reactor yields the desired result. A batch reaction is carried out in the reactor and the reaction time is the most critical factor for the operation. The same reaction is to be carried out in a 8-ft diameter reactor with a 3-ft diameter turbine impeller. (a) What rotational speed will give the same blending time? (b) What will be ratio of power requirement per unit volume for the two reactors? Note: For this case, the Da Dt ratio is not the same. So you cannot use ntT = constant.