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# Calculating Effusion Time Using Graham's Diffusion Law

CHEM-EXPF7L

If a certain amount of ${N}_{2}(g)$ takes $44\text{ seconds}$ to effuse through an opening, how long will the same amount of ${O}_{2}(g)$ take to effuse under identical conditions?

A

$50\text{ seconds}$

B

$47\text{ seconds}$

C

$39\text{ seconds}$

D

$41\text{ seconds}$