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Nostrana [21]
2 years ago
10

A nurse practitioner prepares an injection of promethazine, an antihistamine used to treat allergic rhinitis. If the stock bottl

e is labeled 30. mg/mL and the order is a dose of 15.0 mg , how many milliliters will the nurse draw up in the syringe?
Chemistry
1 answer:
nordsb [41]2 years ago
5 0
Essentially what the question is asking you to find is the volume of promethazine the nurse will fill the syringe with.  The question gives you :
-  Density =  30 mg / mL
-  Mass    =  15.0 mg

Therefore you can solve using the formula:
    Volume  =   \frac{mass}{density}
                   =   \frac{15 mg}{30 mg / L}
                   =    0.5 mL
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