Question

Calculate the number of units per milliliter if a $5 \mathrm{~mL}$ vial of heparin containing 8,000 units $/ \mathrm{mL}$ is injected into $5000 \mathrm{~mL}$ of normal saline solution. 

   Calculate the number of units per milliliter if a $5 \mathrm{~mL}$ vial of heparin containing 8,000 units $/ \mathrm{mL}$ is injected into $5000 \mathrm{~mL}$ of normal saline solution.
Essential Math and Calculations for Pharmacy Technicians
Essential Math and Calculations for Pharmacy Technicians
Indra K. Reddy,… 1st Edition
Chapter 15, Problem 32 ↓

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$5 \mathrm{~mL} \times 8000 \mathrm{~units/mL} = 40,000 \mathrm{~units}$  Show more…

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Calculate the number of units per milliliter if a $5 \mathrm{~mL}$ vial of heparin containing 8,000 units $/ \mathrm{mL}$ is injected into $5000 \mathrm{~mL}$ of normal saline solution.
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Key Concepts

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Dilution Principle
The dilution principle involves reducing the concentration of a solution by adding more solvent while keeping the amount of solute constant. This principle is based on the relationship C1 × V1 = C2 × V2, where C represents concentration and V represents volume.
Concentration Calculations
Concentration measures the amount of solute present per unit volume of solution. It is typically expressed in units like units per milliliter. Calculating concentration after dilution involves determining the total amount of solute and dividing it by the new total volume.
Total Amount of Solute
The total amount of solute in a solution is determined by multiplying the initial concentration by the volume of that solution. This concept is key in dilution problems, as the total amount of solute remains unchanged when additional solvent is added, allowing for the new concentration to be calculated.
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