Final answer:
The label "epinephrine 2.25% nebulizer" indicates the concentration of epinephrine in the solution and the question is asking for the number of milligrams in a 0.5 mL vial and the strength in mg/mL.
Step-by-step explanation:
The label "epinephrine 2.25% nebulizer" indicates the concentration of epinephrine in the nebulizer solution. The concentration is expressed as a weight/volume percentage (w/v), meaning the amount of epinephrine is given as a percentage of weight per volume of solution. To calculate the number of milligrams in a 0.5 mL vial, you need to multiply the concentration (2.25%) by the volume (0.5 mL), and then convert it to mg. The strength in milligrams per milliliter is simply the concentration (2.25%) expressed as mg/mL.
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