Answer:
Ar effuses 1.37 times faster than Cl₂
Step-by-step explanation:
The relative rate of effusion of two gases is given by the inverse ratio of the square root of their molar masses.
The molar mass of Ar is 39.95 g/mol
The molar mass of Cl₂ is 70.91 g/mol.
Therefore, the relative rate of effusion of Ar compared to Cl₂ can be calculated as follows:
Sqrt is the square root
sqrt(70.91)/sqrt(39.95) = 1.37
So, Ar effuses 1.37 times faster than Cl₂.