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How will you prepare 40% NaOH, and 1m NaOH?

How will you prepare 40% NaOH, and 1m NaOH?

40%(w/w) : Dissolve 40g of NaOH in 60g of water. 40%(w/v) : Dissolve 40g of NaOH in enough water to give 100ml. 1m NaOH : Dissolve 40g (1mol) NaOH in 1 kg of ...

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