Answer:
Explanation:
Rate of effusion =
[tex]Rate of effusion = \frac{k}{\sqrt{M} }[/tex]
k is a constant and M is molecular mass .
Molecular mass of He = 4 .
rate of effusion of He = r₁
Molecular mass of unknown compound = M
rate of effusion of unknown gas = r₂
r₁ = k / √4
r₂ = k / √M
r₁ / r₂ = √ ( M/4 )
6.04 = √ ( M/4 )
36.48 = M/4
M = 146 approx .
molecular mass of unknown gas = 146 .
