How Does a cup full of methanol and a pool full of methanol have the same mass?

A cup full of methanol and a pool full of methanol can have the same mass if the volume of methanol in the cup is equal to the volume of methanol in the pool. Mass is a property that depends on the amount of substance, which is determined by both the volume and the density of the material. If the cup and pool contain equal volumes of methanol, they will have the same mass, regardless of their sizes. However, in practical terms, a cup and a pool typically do not contain equal volumes of methanol.