咩係molarity

molarity = M, 是液體濃度
1M = 1mole/litre
mole 是重量
1mole = mass (g) of compound in 1 mole

2007-01-31 12:27:15 補充：
mole = mass (g) / molar mass (g)molar mass = mass (g) of compound in 1mole

2007-02-01 13:49:42 補充：
樓下位朋友, 應是１ｄｍ3＝１０００ｃｍ3 (而不是１ｄｍ＝１０００ｃｍ3)另外1L=１ｄｍ3＝１０００ｃｍ3

Molarity 是 mole 除 volume
volume　是　１ｄｍ，　１ｄｍ＝１０００ｃｍ３