实验室需要配制500g质量分数为10%的盐酸需要质量分数38%的浓盐酸(密度为1.19克/cm3)多少ml?水多少ml?
人气：453 ℃ 时间：2019-08-17 17:29:05
解答
需要浓盐酸110.6mL,需要水的体积是386.4mL500g质量分数为10%的盐酸溶质质量=500*10%=50g需要38%浓盐酸的质量=50/38%=131.6g需要浓盐酸的体积V=m/ρ=131.6/1.19=110.6mL需要水的质量是500-131.6=368.4g因为水的密度是...
推荐
猜你喜欢
- Why don`t you talk to her about it 同义句__ __ talking to him about it?
- 坚持做一件事情就会成功,这句用一个四字成语概括
- 两捆电话线的长度相等,如果第一捆剪去20米,第二捆剪去4米,那么第二捆剩下的长度正好是第一捆余下长度的3
- You're shorter than me的问句 My legs are longer than yours的问句 She is 2years younger than you
- 已知三角形ABC中,A(2,-1),B(3,2),C(-3,-1),BC边上高为AD,求向量AD及D点坐标
- My father will come back in a week .同义句转换（ )( )a week ()my father comes back.
- I don't regret the things I've done,I regret the things I didn't do when I had the chance.不为做过
- 例句：书似阶梯,开启心灵之门；书似灯塔,照亮前行之路.仿句：(>_
