固体物质的溶解度和饱和溶液里溶质的质量分数只与_1有关，而与溶剂质量无关．将100g质量分数为10%的食盐溶液变成质量分数为20%的食盐溶液，应蒸发掉_2g水．_刷题宝

题干

固体物质的溶解度和饱和溶液里溶质的质量分数只与____ 有关，而与溶剂质量无关．将100g质量分数为10%的食盐溶液变成质量分数为20%的食盐溶液，应蒸发掉____ g水．

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