percent by volume = 70%
volume of solution = 500 mL
volume of solute
[tex]\text{volume of solute} = \dfrac{\text{percent by volume}}{100\%} \times \text{volume of solution}[/tex]
[tex]\text{volume of solute} = \dfrac{70\%}{100\%} \times \text{500 mL}[/tex]
volume of solute = 350 mL
[tex]\\[/tex]
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