Question

Calculate the mass percent of a NaCl solution prepared by mixing 21.0 g NaCl with 125.0 mL of pure water.

Answer 1

`16.8\text{ \%}`

Step-by-step 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:

`\text{Mass percent = }\frac{mass\text{ of solute}}{\text{volume of solvent}}*\text{ 100 \%}`

`(21)/(125)*\text{ 100 \% = 16.8 \%}`