Energy, Environment, and Industrial Development. Michael B. McElroy Frederick H. Abernathy Lecture 22 May 1, 2006. Elements of Nuclear Physics.
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Michael B. McElroy
Frederick H. Abernathy
May 1, 2006
In this case, the nucleus contains 92 protons and 143 neutrons.
atomic number, number of protons
0n1 + 92U235 38Sr90 + 54Xe143 + 30n1
Products in this case are strontium, xenon and 2 extra neutrons.
Neutron, zero charge, mass 1
Number of atoms in mole = 6.02x1023
Energy per atom = 200 MeV = 2x108 eV
= 3.204x10-11 J
Energy per mole = 6.02x1023 x 3.204x10-11 J
= 1.93x1013 / 4.184 cal
= 4.61x1012 cal = 4.61x109 kcal
1Btu = 2.52x102 cal
Energy per mole = 4.61x1012 / 2.52x102
= 1.83x1010 Btu
1 Quad = 1015 Btu
1017/1.83x1010 moles of U235
= 5.5x106 moles
= 5.5x106 x 2.35 x102g
= 1.3x109 g = 1.3x103 tons
= 1.9x105 ton U
190,000 metric tons U
about 10,000 times less than requirement for coal