Question

1) In a conventional explosion, when each molecule of high explosive chemically reacts, it produces about 4 x 10-18 J (joules) of energy. If each molecule of high explosive weighs as much as a single uranium 235 atom, and each uranium atom releases about 4 x 10-11 J in a fission explosion, what is the ratio between the number of joules of energy produced by one kg of uranium 235 in a nuclear fission explosion and the energy produced by a kg of high explosive blowing up? Your answer should be a unit-less ratio (energy from uranium) ÷ (energy from high explosive).