Calculate the relative rates of diffusion for and in gaseous form

CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance

Problem

Calculate the relative rates of diffusion for

^{235}\text{UF}_6

and

^{238}\text{UF}_6

in gaseous form. Also if naturally occurring uranium ore having

\text{U}^{235}

and

\text{U}^{238}

in the ratio 0.72 and 99.28%, and if it is desired to enrich the

\text{U}^{235}

to 10% of the sample, making use of relative rates of diffusion of

\text{UF}_6

having

\text{U}^{235}

and

\text{U}^{238}

isotopes, how many diffusion stages are required?