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Investigating changes in colligative properties involves the measurement of a solution's concentration in molality instead of molarity because (2 points)

the mass of the solvent does not change, but its volume does change, as temperature changes.

the volume of a solution can be measured more accurately than the mass of a solution.

the volume of a solution does not change, but its mass does change, as temperature changes.

the mass of a solvent can be measured more accurately than the volume of a solvent.