The decrease in each day. in the Uranium mass of the material in a Uranium reactor operating at a power of 12 MW is (Energy released in one ₉₂ U ²³⁵ fission is about 200 MeV )

Step-by-step solution

Energy/fission = E = 200 meV aligned & Power, P = nE t n = p.t E & n = 12 10^6 24 3600 200 10^6 1.6 10⁻¹⁹ =324 10²⁰ & Number of moles = n N _ A = m M _ o & 324 10²⁰ 6.023 10²³ = m 235 & ~m = 235 324 10²⁰ 6.023 10²³ & =12.64 ~g aligned