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Calculate and compare the energy release...

Calculate and compare the energy released by a) fusion of 1.0 kg of hydrogen deep within Sun and b) the fission of 1.0 kg of `""^(235)U` in a fission reactor.

Text Solution

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(a) Note that in the interior of Sun, four ` ""_(1)^(1)H` nuclei combine to form one `""(2)^(4)He` nucleus releasing about 26 MeV of energy per event. Energy released in fusion of 1kg of hydrogen `= 39 xx 10^(26) MeV`
(b) Energy released in fission of 1kg of `""_(92)^(235) U= 5.1 xx 10^(26) MeV`
The energy released in fusion of 1 kg of hydrogen is about 8 times that of the energy eleased in the fission of 1 kg of uranium.
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