What is the difference between effusion and diffusion?

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the rate of diffusion of a gas is inversely proportional to the square root of its mass, while the rate of effusion of a gas is directly proportional to the square root of its mass.
effusion is the process in which gas molecules escape through a tiny hole in a membrane without collisions.
the rate of effusion of a gas is inversely proportional to the square root of its mass, while the rate of diffusion of a gas is directly proportional to the square root of its mass.
effusion is the mixing of different gases by random molecular motion and with frequent collisions.
diffusion is the mixing of different gases by random molecular motion and with frequent collisions.
diffusion is the process in which gas molecules escape through a tiny hole in a membrane without collisions.