did
it contain initially ? Assume that all the energy generated arises from the
fission of and that this nuclide
is consumed by the fission process.
Answer:
Power P = 1000 MW
= 1000 x 106
W = 109 W
Also, time
r= 5-00 year
= 5 x 365 x
24 x 60 x 60 seconds
= 1.577 x 108
s
Energy
consumed = Pt
= 109
x 1.577 x 108 = 1.577 x 1017 J
We know
energy generated per fission of
Number
of total fissions occurred in five years 
Now 6.023 x
1023 atoms (fissions) are produced by 235 g of 
Mass
of consumed
in five years
Initial mass
of 
=
3848 kg
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