The amount of U-235 present in natural uranium is

Percentage of U^(235) in natural uranium is __________.

Percentage of U^(238) in natural uranium is _________.

Almost all of naturally occurring uranium is ._92^238U with a half-life of 4.468xx10^9 yr. Most of the rest of natural uranium is ._92^235 U with a half-life of 7.038xx10^8 yr.Today a sample contains 0.72% ._92^235 U (a)What was this percentage 1.0 billion years ago ? (b)What percentage of the sample would be ._92^235 U in 100 million years ?

Calculate the energy released by 1 g of natural uranium assuming 200 MeV is released in eaech fission event and that the fissionable isotope U^235 has an abundance of 0.7% by weight in natural uranium.

Calculate the energy released by 1 g of natural uranium assuming 200 MeV is released in eaech fission event and that the fissionable isotope ^235 U has an abundance of 0.7% by weight in natural uranium.

The amount of U^(235) to be fissioned to operate 10 kW nuclear reactor is

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