试题与答案

5%浓度的食盐溶液50克,倒入50克10%的食盐溶液中,混合后的食盐液浓度是()A、

题型:单项选择题

题目:

5%浓度的食盐溶液50克,倒入50克10%的食盐溶液中,混合后的食盐液浓度是()

A、5%

B、15%

C、7.5%

D、10%

答案:

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