Question 39 of 45 Incorrect Incorrect Sapling Learning macmillan learning The av

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Question 39 of 45 Incorrect Incorrect Sapling Learning macmillan learning The average energy released by the fission of a single atom of uranium-235 is approximately 205 MeV. How much total energy would be released by the complete fission of 3.85 kg of 235 Express your answer in units of Joules. Number A typical small town might use about 25.5 MW of power, on average. How long, in days, would it take such a town to use the amount of energy calculated above? Number days Previous 3 Give Up & View Solution Check Answer Next Exit Hint

Explanation / Answer

Here

for each atom , energy released , E = 205 MeV

for 3.85 Kg of 235-U

energy released = 3.85 *10^3/(235) * 6.022 *10^
23 * 205 * 1.602 *10^-19 * 10^6

energy released = 3.24 *10^14 J

the energy released is 3.24 *10^14 J

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let the time is t

t * 25.5 * 10^6 = 3.24 *10^14

solving for t

t = 1.27 *10^7s

t = 147.1 days

the power can be provided for 147.1 day

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