質(zhì)量分數(shù)怎么算

　　液體的質(zhì)量分數(shù)：質(zhì)量分數(shù)=溶液中溶質(zhì)質(zhì)量與溶液質(zhì)量*100%，溶液質(zhì)量=溶質(zhì)質(zhì)量+溶劑質(zhì)量，無單位。

　　固體的質(zhì)量分數(shù)：質(zhì)量分數(shù)=所求物質(zhì)的質(zhì)量/總的物質(zhì)的質(zhì)量*100%，無單位。