What mass of sodium hydroxide is present in a $40%$ $"m/m"$ solution of $"sodium hydroxide"$ ?

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Answer 1 · 2017-12-06T15:59:43

Unknown on these data....we need the density of the solution....

We gots a $40%$ solution of sodium hydroxide in water....

i.e. $"mass of sodium hydroxide"/"mass of solution"xx100%=40%$

We need the density of the solution to approach its concentration in $"moles per litre"$ .

What mass of sodium hydroxide is present in a 40%40% "m/m""m/m" solution of "sodium hydroxide""sodium hydroxide"?