A uranium reactor develops thermal energy at a rate of 300 KW. Calculate the amount of 235U being consumed every second. Average energy released per fission is 200 MeV.

Let n atoms consume per sec.

Total energy released per sec= No. of atoms consumed per sec × Energy released per atom


J



n= 9.375× 1015


235g of 235U contains 6.023× 1023 atoms


9.375× 1015 atoms are present in = 3.65× 10-6g


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