Answer:
Percent by mass is in terms of the masses of the solute and the solution. It is the ratio of the mass of the solute to the total mass of the solution. Percent by volume on the other hand is in terms of the volumes of the solute and the solution.
Explanation:
mass percents are typically reported for solid- and liquid-phase solutions, and volume percents are usually determined for liquid- and gas-phase solutions, a mass/volume percent concentration is most often calculated for solutions that are specifically prepared by dissolving solid solutes in liquid solvents.
