Graham's Law states that the rate of diffusion for a gas is: Independent of the gas's mass. Proportional to the gas's density. Dependent on the temperature alone. Inversely proportional to the square root of the gas's molar mass.

The correct answer is:**Inversely proportional to the square root of the gas's molar mass.**### Explanation:Graham's Law of Diffusion (or Effusion) states that the rate of diffusion or effusion of a gas is inversely proportional to the square root of its molar mass. Mathematically, it can be expressed as: Where:- and are the rates of diffusion or effusion for two gases.- and are the molar masses of the two gases.This means that lighter gases (with smaller molar masses) diffuse or effuse faster than heavier gases (with larger molar masses).