Calculate the amount of 92 U 235 which must go nuclear fission to produce the same amount of energy as produced by 1 ton of coal. The heat of combustion of coal is 8X10 3 cal/gram. The fission of 92 U 235 produces 200 Mev energy/fission. (Use 1 cal = 4.2 J, 1 ton = 10 6 gram. AV number is 6.023X10 23 and 1. 602 X 10 -19. J= 1eV)

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askiitian.expert- chandra sekhar · Answer

Hi Kiran, combustion of coal is 8X10 3 cal/gram 1 ton produces= 8X10 3 x 10 6 x 4.2 J 200 MeV = 200 * 10 6 * 1. 602 * 10 -19. J/fission let y fissions then y*200 * 10 6 x 1. 602 X 10 -19. = 8X10 3 x 10 6 x 4.2 y=10.487*10 20 atoms no of moles = y/ 6.023X10 23 =0.00174 moles

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