QUESTION 1 Determine the specific energy (in MWh/kg) of nuclear fuel that contains 3% (by weight) U-235. Assume that U-235 is the only fissile fuel and fission reaction of one U-235 atom results in 178 MeV of energy release. 1 mol of U-235 contains 6.022-1023 U-235 atoms and weighs 235 gm. 1 MeV: 1.602 10-13 J; QUESTION 2 In 2020, US generated 789.9 TWh of electricity from nuclear power plants. Assuming an overall efficiency of 30%, how much nuclear fuel (in metric tons, 1 ton=1,000 kg) these power plants would have used if the fuel 3% U-235 with only U-235 as the fissile material