Answer:

Percent Volume

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, molality, parts per million (ppm), or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

Volume of agua oxigenada are in a 400mL bottle of this solution: 12 ml

Further explanation

There are several concentration units in percentages that can be used.

Percent Volume (% V / V): total volume (ml) of solute in 100 ml of solution.

Can be formulated:

\tt \%volume=\dfrac{volume~solute}{volume~solution}\times 100\%%volume=

volume solution

volume solute

×100%

Given

A bottle of hydrogen peroxide also known as agua oxigenada is labeled 3%

(v/v) in a 400mL bottle

Required

Volume of agua oxigenada

Solution

3% v/v indicates that there are 3 ml of agua oxigenada in 100 ml of solution

So for 400 ml of solution, volume of agua oxigenada:

\begin{gathered}\tt =\dfrac{3}{100}\times 400\:ml\\\\=\boxed{\bold{12\:ml}}\end{gathered}

=

100

3

×400ml

=

12ml

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