Final answer:
To administer a 20 mg dose using a 5% solution of medication ABC, one would need to measure out 0.4 mL of the solution.
Step-by-step explanation:
To calculate the volume of ABC 5% solution needed for a dosage of 20 mg, we must understand the concept percent solution similar to the given instance where a 10% solution is diluted. The 5% solution indicates that there are 5 grams of solute in 100 mL of solution. Since 1 gram equals 1000 mg, it means that there are 5000 mg of the medication in 100 mL of the solution.
To find out how many mL(s) we need to administer 20 mg, we set up a proportion:
(5000 mg / 100 mL) = (20 mg / X mL)
Solving for X gives us X = (20 mg * 100 mL) / 5000 mg, which simplifies to 0.4 mL. Therefore, we would administer 0.4 mL of the ABC 5% solution to provide a 20 mg dose.