溶液三大问题:
①蒸发稀释类:溶质不变
多次加水
②溶液混合类:混合前后总溶质相等
A * a% + B * b% = (A+B) * c%
③反复操作类:总溶液不变,计算剩余溶质
赋值
一个视频解决:
<iframe allowfullscreen="true" border="0" frameborder="no" framespacing="0" scrolling="no" src="//player.bilibili.com/player.html?aid=95347645&bvid=BV1hE411K7Eg&cid=162772467&page=1"> </iframe> 标签:关系,b%,a%,溶质,数量,溶液,混合,不变 From: https://www.cnblogs.com/wangzheming35/p/17338338.html