# Question #14940

##### 1 Answer

#### Explanation:

A solution's *volume by volume percent concentration*, *volume of solute* present in **of solution**.

This means that in order to find a solution's volume by volume percent concentration you must know

thevolume of solutedissolved in your samplethetotal volumeof the solution

In your case, you know that *enough* solvent to make the **total volume** of the solution equal to

Since your goal here is to figure out how many milliliters of acetone are present in *conversion factor* to say

#100 color(red)(cancel(color(black)("mL solution"))) * overbrace("16.0 mL acetone"/(155 color(red)(cancel(color(black)("mL solution")))))^(color(blue)("known composition")) = "10.3 mL acetone"#

So, you know that

#color(green)(|bar(ul(color(white)(a/a)color(black)("% v/v" = 10.3%)color(white)(a/a)|)))#

The answer is rounded to three **sig figs**.