啥意思?5mBoil 0.5 g of the powdered tablets for 2 to 3 minutes with 10 ml of 5M sodium hydroxide,cool and add an excess of 1M sulphuric acid; a crystalline precipitate is produced.那个5m sodium hydroxide

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啥意思?5mBoil0.5gofthepowderedtabletsfor2to3minuteswith10mlof5Msodiumhydroxide,coolandaddanexcessof1Msu

啥意思?5mBoil 0.5 g of the powdered tablets for 2 to 3 minutes with 10 ml of 5M sodium hydroxide,cool and add an excess of 1M sulphuric acid; a crystalline precipitate is produced.那个5m sodium hydroxide
啥意思?5m
Boil 0.5 g of the powdered tablets for 2 to 3 minutes with 10 ml of 5M sodium hydroxide,cool and add an excess of 1M sulphuric acid; a crystalline precipitate is produced.
那个5m sodium hydroxide

啥意思?5mBoil 0.5 g of the powdered tablets for 2 to 3 minutes with 10 ml of 5M sodium hydroxide,cool and add an excess of 1M sulphuric acid; a crystalline precipitate is produced.那个5m sodium hydroxide
M=mol/L,是5摩尔/升,M是简写
5m sodium hydroxide就是浓度为5摩尔/升的氢氧化钠溶液

应该是5ml氢氧化钠

5摩尔氧化钠

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