4.2 Expressions of concentration B mass fraction of B B B The ratio of mass of solute to the total mass of solute and solvent 4上一内容下一内容◇回主目录 返回 2021/2/21上一内容 下一内容 回主目录 返回 2021/2/21 4.2 Expressions of concentration 4. wB mass fraction of B ( ) B B m 总 m w = The ratio of mass of solute to the total mass of solute and solvent