Question: natural uranium approximately contains 07 of uranium235 and 993...

Natural uranium approximately contains 0.7 𝑎⁄𝑜 of uranium-235 and 99.3 𝑎⁄𝑜 of uranium-238. This small amount of uranium-235 is not sufficient for a Light Water Reactor (LWR) to work properly; to make it work, the amount of 92𝑈 235 in the uranium has to be enriched. A certain nuclear reactor is fueled with 1,500 kg of uranium rods enriched to 20 𝑤⁄𝑜 92𝑈 235 ; the reminder is 92𝑈 238 . Density of the enriched uranium fuel is 19.1 g cm3 ⁄ . a) How many kg of 92𝑈 235 is in the reactor? b) What are the densities (in g cm3 ⁄ ) of 92𝑈 235 and 92𝑈 238 in the enriched uranium? c) What are the atom densities (in 1024 atoms cm3 ⁄ ) of 92𝑈 235 and 92𝑈 238 in the fuel rods?