Pharmacy 102- Chapter 9- Quiz || with 100% Verified Solutions.
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Pharmacy 102- Chapter 9
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Pharmacy 102- Chapter 9
There are 150 mL of active ingredient in 1,200 mL of a solution. What is the percentage strength of this solution? Round your answer to the nearest tenth of a percent, if necessary. correct answers 12.5%
Use the equation: 150 mL : 1200 mL
x mL : 100 mL (150 × 100 = 15,000. 1,200 × x = 1200x. x ...
Pharmacy 102- Chapter 9- Quiz || with 100% Verified
Solutions.
There are 150 mL of active ingredient in 1,200 mL of a solution. What is the percentage strength
of this solution? Round your answer to the nearest tenth of a percent, if necessary. correct
answers 12.5%
Use the equation: 150 mL : 1200 mL
x mL : 100 mL (150 × 100 = 15,000. 1,200 × x = 1200x. x = 15,000 ÷ 1,200 = 12.5).
A prescriber ordered 500 mg in 50 mL to be administered at 25 mL/hr through macrodrip tubing
with a. drop factor of 20 gtts/mL. How many milligrams of the drug will be in each drop? correct
answers 0.5 mg/gtt
500 mg ÷ 50 mL = 10 mg/mL.
Next, use the formula: concentration (mg/gtt) = concentration (mg/mL) ÷ drop factor (gtts/mL).
Therefore, 10 mg/mL ÷ 20 gtt/mL = 0.5 mg/gtt.
An IV solution has a total volume of 150 mL and is being administered over 120 minutes using
macrodrip tubing with a drop factor of 10 gtts/mL. What is the IV flow rate in drops per minute?
Round your answer to the nearest whole number, if necessary. correct answers 13 gtts/min
(150 mL ÷ 120 min) × 10 gtts/mL = 12.5 gtts/min, which rounds to 13 gtts/min.
How many milliliters of active ingredient are in 225 mL of a 5% solution? correct answers 11.25
mL
5 mL : 100 mL :: x mL 225 mL (5 × 225 = 1,125. 100 × x = 100x. x = 1,125 ÷ 100 = 11.25).
Your pharmacy stocks a 2.5% liquid in a liquid solution. How is this percentage strength
expressed as a ratio strength of a v/v solution? correct answers 2.5 mL/100 mL
2.5% solution has 2.5 mL of active ingredient per 100 mL of solution.
There are 250 mg of active ingredient in a 75 mL solution. What is the percentage strength of
this solution? correct answers 0.3%
1000 mg : 1 g
250 mg : x g (1000 × x = 1000x. 1 × 250 = 250. x = 250 ÷ 1000 = 0.25)
Next, determine the percentage strength using the equation: 0.25 g : 75 mL :: x g : 100 mL (0.25
× 100 = 25. 75 × x = 75x. x = 25 ÷ 75 = 0.3.
An IV solution has a total volume of 100 mL and is being administered over 180 minutes using
microdrip tubing with a drop factor of 60 gtts/mL. What is the IV flow rate in drops per minute?
Round your answer to the nearest whole number, if necessary. correct answers 33 gtts/min
Therefore, (100 mL ÷ 180 min) × 60 gtts/mL = 33 gtts/min.
The pharmacy receives an order for 500 mL of D8W. How much D50W and how much SWFI
are needed to this dilution? correct answers 80 mL of D50W and 420 mL of SWFI
(500 ÷ 50) × 8 = 80 mL of D50W.
500 mL - 80 mL = 420 mL of SWFI.
, The pharmacy receives an order for 250 mL of D10W. How much D50W and how much SWFI
are needed to make this dilution? correct answers 50 mL of D50W and 200 mL of SWFI
(250 ÷ 50) × 10 = 50 mL of D50W.
250 mL - 50 mL = 200 mL of SWFI.
How many milliliters of active ingredient are in 500 mL of a 14% solution? correct answers 70
mL
14 mL : 100 mL
x mL 500 mL (14 × 500 = 7,000. 100 × x = 100x. x = 7,000 ÷ 100 = 70).
A physician has ordered a 500 mL bag of D5NS to be infused at 60 mL/hr. How many bags will
be needed in a 24-hour period? correct answers 3
500 mL ÷ 60 ml/hr = 8.33 hr.
24 hr ÷ 8.33 hr/bag = 2.88 bags.
A physician orders a 150 mL IV bag to be infused at 12 mL/hr. How many hours will it take to
infuse the full 150 mL IV bag? Round your answer to the nearest tenth of an hour, if necessary.
correct answers 12.5 hours
150 mL ÷ 12 mL/hr = 12.5 hr.
A prescriber ordered 1,250 mg in 500 mL to be administered at 80 mL/hr through macrodrip
tubing with a. drop factor of 10 gtts/mL. How many milligrams of the drug will be in each drop?
correct answers 0.25 mg/gtt
1,250 mg ÷ 500 mL = 2.5 mg/mL.
2.5 mg/mL ÷ 10 gtt/mL = 0.25 mg/gtt.
A patient is to receive 1,375 mg in 500 mL over 8 hours. What is the flow rate in milligrams per
hour? Round your answer to the nearest tenth of a milligram, if necessary. correct answers 171.9
mg/hr
1,375 mg ÷ 8 hr = 171.9 mg/hr.
A physician has ordered a 1 L bag of D5NS to run at 90 mL/hr. How many bags will be needed
in a 24-hour period? correct answers 3
1 L = 1,000 mL
1,000 mL ÷ 90 mL/hr = 11.11 hr.
24 hr ÷ 11.11 hr/bag = 2.2 bags,
How many milliliters of active ingredient are in 1.5 L of a 15% solution? correct answers 225
mL
1 L : 1000 mL
1.5 L : x mL (1 × x = 1x. 1000 × 1.5 = 1,500. x = 1,500 ÷ 1 = 1,500)
15 mL : 100 mL :: x mL : 1,500 mL (15 × 1,500 = 22,500. 100 × x = 100x. x = 22,500 ÷ 100 =
225).
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