1. The problem statement, all variables and given/known data What proportion of the total energy in Uranium-235 is extracted through nuclear fission? In 2001, the world electricity consumption was 13.81 trillion kWh. Assuming 50% efficiency in converting and distributing the power, and imagining that all production was nuclear, how many kg of radioactive waste (Xe and Sr) would have been created? 2. Relevant equations 1 n + 235U -> 140Xe + 94Sr + 2 n + gamma 1 MeV = 1.602x10^-13 J 1 kWh = 3.6x10^6 J 3. The attempt at a solution Using the reaction and the binding energies the released energy is equal to 175 MeV. how do i calculate the proportion of the extracted and total energy? how do i use the % of efficiency and the global production to calculate the waste? Please help.