There will be "1.6 mL" of active ingredients present in the bottle.
According to the question,
Bottle's total volume,
= 32 mL
Active ingredients by volume,
= 5%
= [tex]\frac{5}{100}[/tex]
= [tex]0.05[/tex]
→ Milliliters of Active ingredient present in the bottle will be:
= [tex]32 \ mL\times 0.05[/tex]
= [tex]1.6 \ mL[/tex]
Thus the above is the right answer.
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Taking into account the definition of percentage in volume, 0.55 mL of active ingredient are in the bottle.
In first place, every solution consists of two classes of components: the solvent and the solute.
The solvent of a solution is the component that is capable of dissolving others and is usually the component present in greater quantity.
The solute is the component that is dissolved in the solvent and is usually present in smaller quantities. A solution can contain more than one solute.
On the other side, the concentration of a solution is the amount of solute in a given amount of solution.
The percentage in volume (% v / v) is a measure of the concentration that indicates the volume of solute per 100 units of volume of the solution and can be calculated mathematically by means of the expression:
[tex]percentage in volume=\frac{solute volume}{solution volume}x100[/tex]
In this case:
Replacing in the expresion for percentage in volume:
[tex]5=\frac{solute volume}{11 mL}x100[/tex]
Solving:
5× 11 mL= solute volume×100
55 mL=solute volume×100
55 mL÷100= solute volume
0.55 mL= solute volume
Finally, 0.55 mL of active ingredient are in the bottle.
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