What are some of the difficulties with measuring the volume of a gas? Select all that apply.

it could be soluble in liquid

it can be difficult to contain.

it varies depending on the container it is in

it varies based on its mass

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I think that’s the answers I’m not so sure

I think it's the first three. Gases can be soluble in liquids, can be difficult to contain depending on the gas and the volume of a gas definitely depends on container size. Mass is an independent variable. It doesn't change unless more of the gas is added or released from the container.