A solution is prepared by dissolving 120 mL of agua oxinada in water to make 4,250 mL of solution. What is the % by volume of the agua oxinada solution?
A. 2.0%
B. 2. 5%
C. 2.75%
D. 2.82%
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A solution is prepared by dissolving 120 mL of agua oxinada in water to make 4,250 mL of solution. What is the % by volume of the agua oxinada solution?
A. 2.0%
B. 2. 5%
C. 2.75%
D. 2.82%
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Answer:
D. 2.82%
Explanation:
The percent by volume can be solved by dividing the volume of solute by the volume of the solution then multiplied by 100%. Or simply, it is the volume of the part divided by the whole multiplied by 100%:
% agua oxinada = x 100%
= 0.0282 x 100%
= 2.82%
It is important to note that the volume of the solute and the volume of the solution should have the same units to get the percent by volume. In case that they have different units, we have to change one to make it the same. Also, the percent by volume of the components of a solution should be equal to 100% when added. Thus, the computation above tells us that in this prepared solution, 2.82% is agua oxinada. Also, approximately 97.18 % is water.
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