Each actuation delivers 0.25 mL of product at a concentration of 50 mg per mL. How many milligrams are delivered per actuation?

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Multiple Choice

Each actuation delivers 0.25 mL of product at a concentration of 50 mg per mL. How many milligrams are delivered per actuation?

Mass delivered equals volume times concentration, because concentration tells you how many milligrams are in each milliliter, and the volume tells you how many milliliters you’re using. So the amount of drug per actuation is 0.25 mL × 50 mg/mL = 12.5 mg. This also makes sense because a quarter of a milliliter of a solution with 50 mg in 1 mL contains a quarter of 50 mg, which is 12.5 mg.

Mass delivered equals volume times concentration, because concentration tells you how many milligrams are in each milliliter, and the volume tells you how many milliliters you’re using. So the amount of drug per actuation is 0.25 mL × 50 mg/mL = 12.5 mg. This also makes sense because a quarter of a milliliter of a solution with 50 mg in 1 mL contains a quarter of 50 mg, which is 12.5 mg.

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