The percent by volume of propanone in the solution is 6.6 % .
Given:
Volume of solute ([tex]C_{3} H_{6} O[/tex]) = 20.0 mL
Volume of solution = 300 mL
To calculate the percent:
% by vol= (vol solute/vol of soln) x 100
= (20mL C₃H₆O/300mL) x 100
= 6.6 % propanone .
Therefore, the percent by volume of propanone in the solution is 6.6 %.
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