2. Characteristics of Fission Energy Estimate the energy released by the fission of 1.0 kg of 2351 U92>142Nd Z r40 +3 n Q Q=(235043924-141.907719-89.904703-3×1.008665) 020553amu(314612Mev1am) This amount of energy is equivalent to2.2×1010 191.4 Mev per fission (1.62e-13J11Mev) kilowatt-hour, or 22 giga-watt =3.15e-11J hour. This amount of energy keeps a 100-watt light bulb lit 3151101001mol6023e23or25,000ears 23591mol 8.06e 13 J(per kg) Discussion This is a large amount of energy, and it is equivalent to the energy produced by burning tones of coal or oilEnergy Estimate the energy released by the fission of 1.0 kg of 235U. (3.15e-11 J) 1000 g = 8.06e13 J (per kg). Discussion This is a large amount of energy, and it is equivalent to the energy produced by burning tones of coal or oil. 1 mol 235 g 6.023e23 1 mol 235U 92 → 142Nd60 + 90Zr40 + 3 n + Q Q = (235.043924 - 141.907719 - 89.904703 - 3x1.008665) = 0.205503 amu (931.4812 MeV/1 amu) = 191.4 MeV per fission(1.6022e-13 J / 1 MeV) = 3.15e-11 J This amount of energy is equivalent to 2.2×1010 kilowatt-hour, or 22 giga-watt￾hour. This amount of energy keeps a 100-watt light bulb lit for 25,000 years. 2. Characteristics of Fission