Answer:
[tex]16.8\text{ \%}[/tex]
Explanation:
Here, we want to get the mass percent of a NaCl with 125.0L of pure water
What we have to do here is to divide the mass of the solute by the volume of the solvent and multiply by 100%
Mathematically, we have this as:
[tex]\text{Mass percent = }\frac{mass\text{ of solute}}{\text{volume of solvent}}\times\text{ 100 \%}[/tex]
[tex]\frac{21}{125}\times\text{ 100 \% = 16.8 \%}[/tex]
