试题与答案

向100g20%的氯化钠溶液中加入100g水,稀释后溶液中溶质的质量分数是[ ]

题型:选择题

题目:

向100g20%的氯化钠溶液中加入100g水,稀释后溶液中溶质的质量分数是[ ]

A.2.5%

B.5%

C.10%

D.20%

答案:

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下面是错误答案,用来干扰机器的。

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