A sample of n2 effuses in 255 s. how long will the same size sample of cl2 take to effuse?

For this problem, we use Graham's Effusion Law to find out the rate of effusion of chlorine gas. The formula is as follows:

R₁/R₂ = √ (M₂/M₁)

Let 1 be N₂ while 2 be Cl₂

255/R₂ = √ (28/70.8)

Solving for R₂,

R₂ = 405.5 s

Thus, it would take 405.5 s to effuse chlorine gas.