Question

A Hair product requires you to combine 20.0 mL of hydrogen peroxide with enough water to produce a solution

with a total volume of 120.0 mL. Determine the percent by volume concentration of the solution?

Answer 1

Step-by-step explanation:

The volume of water needed to make a 120.0 mL solution can be calculated by subtracting the volume of hydrogen peroxide from the total volume:

The volume of water = Total volume - Volume of hydrogen peroxide

= 120.0 mL - 20.0 mL

= 100.0 mL

The percent by-volume concentration of the solution can be calculated as follows:

The percent by volume = (Volume of hydrogen peroxide / Total volume) * 100

= (20.0 mL / 120.0 mL) * 100

= 16.67%

So, the solution has a concentration of 16.67% hydrogen peroxide by volume.