NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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Ace your North American Pharmacist Licensure Examination (NAPLEX) with our comprehensive practice test. Features include interactive flashcards, multiple-choice questions, with detailed hints and explanations. Fast-track your pharmacy career today!

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What is the percent elemental calcium in Calcium carbonate?

The correct answer is: 40%

Calcium carbonate consists of 40% elemental calcium. This means that for every 1,000 mg of calcium carbonate, there are 400 mg of elemental calcium. It is important for pharmacists to understand the percent elemental calcium in different calcium salts to accurately dose calcium supplementation for patients. Option B (21%), Option C (10%), and Option D (30%) are incorrect because they do not represent the correct percentage of elemental calcium in calcium carbonate.