which statement describes effusion?\no it occurs when a gas passes through a tiny hole.\no it occurs when a…

Answer:

It occurs when gas molecules disperse throughout a container.

Explanation:

Step1: Define effusion

Effusion is the process by which a gas escapes through a tiny hole.

Step2: Analyze options

The first option about a gas passing through a tiny hole is effusion. The second option about a liquid passing through a tiny hole is incorrect as it's not effusion. The third option about gas molecules dispersing throughout a container is diffusion, not effusion. The fourth option about a liquid dispersing throughout a container is also incorrect as it's not related to effusion. So the correct description of effusion is the first option.