Chapter 70: Pharmacy Math
Identify the Roman numeral with a value of 50.
Answer d is correct. L = 50.
Answer a is incorrect. X = 10.
Answer b is incorrect. M = 1000.
Answer c is incorrect. I = 1.
Identify the Arabic value of DCXXIV.
Answer a is correct. D = 500, C = 100, X = 10, I = −1, V = 5 (500 + 100 + 10 + 10 −1 +5 = 624).
Answer b is incorrect. The Roman numeral for 626 would be DCXXVI.
Answer c is incorrect. The Roman numeral for 1024 would be MXXIV.
Answer d is incorrect. The Roman numeral for 1026 would be MCCVI.
If 120 mL of a cough syrup contains 0.4 g of dextromethorphan, how many milligrams are contained in 1 teaspoonful?
Answers a, c, and d are incorrect.
Interferon injection contains 5 million U/mL. How many units are in 0.65 mL?
Answers a, b, and c are incorrect.
An inhalant solution contains 0.025% w/v of a drug in 5 mL. Calculate the number of milligrams in this solution.
Answer b is correct. 0.025 % w/v = 0.025 g/100 mL. Convert this percent w/v to mg/mL= 25 mg/100 mL.