Answer:
375 g
Explanation:
Let the total mass of the solution = x g
Given that the mass of NaOH in the solution = 15.0 g
Thus, mass of the solvent = x - 15.0 g
Given that the mass % of the solution = 4 %
So,
[tex]Mass\ percent=\frac {Mass\ of\ the\ solute}{Mass\ of\ the\ solution}\times 100[/tex]
So,
[tex]4=\frac {15.0}{Mass\ of\ the\ solution}\times 100[/tex]
Mass of the solution = 375 g
375 g of a 4.00 % NaOH solution by mass contains 15.0 g of NaOH.
Mass is the quantity of a substance or compound. Mass is calculated in grams.
Given,
The mass of NaOH in the solution is 15.0 g
The mass % of the solution is 4 %
Now,
Calculate the mass percentage of the compound
[tex]\bold{Mass\;\%\;of \;NaOH= \dfrac{mass\;of\;NaOH}{Mass\;of\;solution} [/tex]
[tex]\bold{Mass\;\%\;of \;NaOH= \dfrac{15.0}{0.04}= 375\;g} [/tex]
Thus, the mass of a 4.00 % NaOH solution by mass containing 15.0 g of NaOH is 375 g.
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