This mass loss of 0.1866 g for each mole of 235U reacting corresponds to 7.94 x 10-4 g per 1 gram of 235U fuel reacting. The energy released is calculated from E = mc2, where m is the mass loss in kilograms, c = 2.998 x 108 m/s, and energy has units of joules. How much energy does 1 gram of 235U fuel produce?