Answer:
[tex]\% m/m =7.61\%[/tex]
Explanation:
Hello!
In this case, since the percentage by mass of a solute in a solvent is computed as shown below:
[tex]\% m/m=\frac{m_{solute}}{m_{solute}+m_{solvent}} *100\%[/tex]
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:
[tex]\% m/m = \frac{35.0g}{35.0g+425.0g} *100\%\\\\\% m/m=7.61\%[/tex]
Best regards!