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iosonia iosonia
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7 years ago
8.4ml of active ingredient is mixed with distilled water to total 16 oz. What is the final concentration (v/v)?
A) 17.5%
B) 7.5%
C) 1.75%
D) 0.175%
Textbook 
The Pharmacy Technician: Foundations and Practice

The Pharmacy Technician: Foundations and Practice


Edition: 2nd
Author:
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Studying to become a pharmacy technician!

Prayer is not asking. It is a longing of the soul. It is daily admission of one's weakness. It is better in prayer to have a heart without words than words without a heart.
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maybesomaybeso
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#1
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7 years ago
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C

Solution
To find the final concentration (v/v) of the active ingredient, you need to divide the volume of the active ingredient by the total volume of the mixture and then multiply by 100 to express it as a percentage.

Volume of active ingredient = 8.4 ml
Total volume of mixture = 16 oz = 473.176 ml (1 oz = 29.5735 ml)

Concentration (v/v) = (Volume of active ingredient / Total volume of mixture) × 100

Concentration (v/v) = (8.4 ml / 473.176 ml) × 100

Concentration (v/v) ≈ (0.01778) × 100 ≈ 1.778%

So, the final concentration (v/v) is approximately 1.778%, which is not one of the options provided. However, if we round it to the nearest option, it would be:

C) 1.75%
1

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iosonia Author
wrote...
#2
7 years ago
So much respect for you after reading your answer, thanks so much
Studying to become a pharmacy technician!

Prayer is not asking. It is a longing of the soul. It is daily admission of one's weakness. It is better in prayer to have a heart without words than words without a heart.
wrote...
#3
7 years ago
Thumbs Up Sign Thumbs Up Sign
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#4
2 years ago
great thanks
Anonymous
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#5
2 months ago
Help! The answer is missing an explanation...
wrote...
#6
2 months ago
solution provided Smiling Face with Open Mouth
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