洛质的质量占全部溶液质量的百分比来表示的溶液的浓度叫做质量百分比浓度，教材在提到这一概念时，特意对“全部溶液”四个字加了着重符号。在学习过程中，很多同学由于对这四个字理解不清而导致解答的错误。例及将m克某物质充分溶于。克水中，所得溶液的质量百分比浓度是（） The concentration of the solution, which is expressed as a percentage of the mass of the entire solution, is called the mass percentage concentration. When the textbook mentions this concept, it deliberately adds emphasis to the words “all solutions”. In the process of learning, many students mistakenly answered the four words due to their unclear understanding. Example and fully dissolved in a substance of m grams. In grams of water, the mass concentration of the resulting solution is ()