Answer:
mass of U 235 is 8.92 × [tex]10^{-4}[/tex] gram
Explanation:
given data
electric energy = 1760 kWh per month
energy u 235 = 208 MeV
to find out
mass of u 235
solution
we know here energy consume in a year is
energy consume = 1760 × 10³ ×3600 × 12
energy consume = 7.603 × [tex]10^{10}[/tex] J
and
now we find no of u235 atom by burn require energy is
that is = energy consume / energy
= 7.603 × [tex]10^{10}[/tex] / ( 208 × 1.6 × [tex]10^{-13}[/tex] )
= 2.285 × [tex]10^{18}[/tex]
and we know 1 mole of u235 = 6.02 × [tex]10^{23}[/tex] atoms
so mass of U235 is
mass = 2.285 × [tex]10^{18}[/tex] / ( 6.02 × [tex]10^{23}[/tex] )
mass of U 235 = 8.92 × [tex]10^{-4}[/tex] gram
