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Accuracy
and precision in the calculation of doses, dosages, and rates of infusion of
intravenous solutions are often based on percents, ratios, and proportions. The
exercises for this CheckPoint provide opportunities to perform various
mathematical functions pharmacy technicians must master.
Assume
the role of a pharmacy technician. A pharmacist gives you a physician’s order
sheet, a prescription, and asks you to prepare a 2% solution of sodium chloride
(NaCl). You check the stock in the pharmacy but discover you have only a 3%
solution of NaCl. Hint: 2g NaCl:100mL of solution::3g NaCL:x mL of 3% solution.
Showall your calculations in a Microsoft® Word
document
Completethe following exercises. Refer to p.
22 for worked examples.
1. 1. Solve the
equation for x to determine how many mL of 3% solution you need.
2. 2. Convert 3%
to a fraction.
3. 3. Convert 2%
to a decimal.
4. 4. Percents
are often used to show the strength of solutions. Which solution is stronger,
the 2% or the 3%?
5. 5. What does
3% of sodium chloride mean, i.e., how many parts are in a 100?
6. 6. Referring
to the proportion regarding NaCl in the scenario, show the product of the means
equals the product of the extremes.
7. 7. Convert 25%
to a fraction.
8. 8. What
percent of 15 ounces is 5 ounces?
9. 9. Convert 1/8
to a percent.
10.Convert 40% to a decimal.
Post your work and answers to all
problems along with a signed copy of the Certificate of Originality as an
attachment under the Assignment link
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