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10 December, 15:55

The label on a bottle of medicine reads "Each 5 mL teaspoonful contains glucose, 1.87 g; levulose, 1.87 g; and phosphoric acid, 21.8 mg." a. Find the amount of phosphoric acid in the recommended dosage of two teaspoons. b. If the bottle contains 4 ounces, find the quantity of phosphoric acid in the bottle. left parenthesis 1 oz almost equals 30 mL right parenthesis

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  1. 10 December, 19:16
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    (a) 43.6 mg; (b) 520 mg

    (a) Mass of phosphoric acid (PA) in a dose

    Mass of PA = 2 tsp * (21.8 mg PA/1 tsp) = 43.6 mg PA

    (b) Mass of PA in the bottle

    Step 1. Convert ounces to millilitres

    Volume = 4 oz * (30 mL/1 oz) = 120 mL

    Step 2. Calculate the mass of PA

    Mass of PA = 120 mL * (21.8 mg PA/5 mL) ≈ 520 mg PA
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