Solution is defined as the mixture of solute in the solvent. The percent volume of solution will be 35.7%.
Given that,
Volume of solute = 25mL
Volume of solvent = 45 mL
Volume of total mixture = solute + solvent = 25 + 45 =70 mL
Volume percentage can be calculated by:
[tex]\begin {aligned} &=\frac{\text{Volume of solute}}{\text{Total volume of solution}} \times 100\\&=\frac{25 \text{mL}}{70 \text{mL}}\times100\\&=35.7\%\end{aligned}[/tex]
Therefore, the percent by volume of a solution is 35.71%.
To know more about percent by volume of solution, refer to the following link;
https://brainly.com/question/23422561?referrer=searchResults
