Amixture of he and ne need to be separated. what will be the ratio of the rates of effusion of he and ne?

Ratio of rates of effusion of He to Ne is 2.245

Explanation:

According to Graham's law rate of effusion is inversely proportional to square root of molar mass of a gas

So,

where, and are rate of effusion of He and Ne respectively. and are molar mass of He and Ne respectively.

Molar mass of He = 4.003 g/mol

Molar mass of Ne = 20.18 g/mol

So,

So, ratio of rates of effusion of He to Ne is 2.245