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Chapter 72. Pharmacy Calculations
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Identify the Roman numeral with a value of 50.
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Answer d is correct. L = 50.
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Answer a is incorrect. X = 10.
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Answer b is incorrect. M = 1000.
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Answer c is incorrect. I = 1.
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Identify the Arabic value of DCXXIV.
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Answer a is correct. D = 500, C = 100, X = 10, I = −1, V = 5 (500 + 100 + 10 + 10 −1 +5 = 624).
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Answer b is incorrect. The Roman numeral for 626 would be DCXXVI.
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Answer c is incorrect. The Roman numeral for 1024 would be MXXIV.
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Answer d is incorrect. The Roman numeral for 1026 would be MXXVI.
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If 120 mL of a cough syrup contains 0.4 g of dextromethorphan, how many milligrams are contained in 1 teaspoonful?
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Alternative method using dimensional analysis:
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Answers a. c, and d are incorrect.
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Interferon injection contains 5 million units/mL. How many units are in 0.65 mL?
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Answers a, b, and c are incorrect.
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An inhalant solution contains 0.025% w/v of a drug in 5 mL. Calculate the number of Milligrams in this solution.
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Answer b is correct. 0.025 % w/v = 0.025 g/100 ...