将质量分数为a%的NaOH溶液蒸发掉m g水后,变成VmL2a%NaOH不饱和溶 发布时间:2017-08-08 22:19 │ 来源:www.tikuol.com 题型:选择题 问题: 将质量分数为a%的NaOH溶液蒸发掉m g水后,变成VmL2a%NaOH不饱和溶液,则蒸发后溶液的物质的量浓度是( )A.mol/LB.mol/LC.mol/LD.mol/L
题型:选择题 School children must be taught how to deal with dangerous _____. [ ]A. states B. conditions C. situations D. positions 查看答案