A 66 kiloton atomic bomb is fueled with pure 235U (Fig. 43-14), 4.0% of which actually undergoes

Question:

A 66 kiloton atomic bomb is fueled with pure 235U (Fig. 43-14), 4.0% of which actually undergoes fission.
(a) What is the mass of the uranium in the bomb? (It is not 66 kilotons-that is the amount of released energy specified in terms of the mass of TNT required to produce the same amount of energy.)
(b) How many primary fission fragments are produced?
(c) How many fission neutrons generated are released to the environment? (On average, each fission produces 2.5 neutrons.)