19. Choose the best answer. Solve this problem using the appropriate law.
Uranium contains two isotopes, U-235 with an atomic mas of 235 g/mol, and U-238 with an atomic mass of 238g/mol. U-235 is needed as a fuel In nuclear reactors. Until recently,
the method used to separate U-235 from U-238 was by gas diffusion. Use U-235 as R, and U-238 as R, and determine the rate of diffusion and which gas will diffuse faster.