Question

a solution of calcium chloride contains 35.0 g calcium chloride 425.0 g water. what is the percentage by mass of calcium chkoride in this solution

Answer 1

`\% m/m =7.61\%`

Step-by-step explanation:

Hello!

In this case, since the percentage by mass of a solute in a solvent is computed as shown below:

`\% m/m=(m_(solute))/(m_(solute)+m_(solvent)) *100\%`

Now, as the solute here is calcium chloride and has a mass of 35.0 g and the solvent is water with a mass of 425.0 g, we can compute the percentage by mass as shown below:

`\% m/m = (35.0g)/(35.0g+425.0g) *100\%\\\\\% m/m=7.61\%`

Best regards!