Question

1. Oral tablets of losartan potassium (‎C₂₂H₂₂ClKN₆O) are available, each containing the equivalent of 45 mg of losartan. If the molecular weight of losartan is 422.9 and that of losartan potassium is 461.9, calculate its quantity in each tablet.

2. An ophthalmic solution is labeled to contain the equivalent of 0.55% of ciprofloxacin base (m.w. 332). How many milligrams of ciprofloxacin hydrochloride (m.w. 386) may be used to prepare each 15 mL of the solution?

3. A certain electrolyte solution contains, as one of the ingredients, the equivalent of 4.5 mEq of calcium per liter. How many grams of calcium chloride dihydrate (CaCl₂ · 2H₂O: m.w. 147) should be used in preparing 40 liters of the solution?

Answer 1