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Alex17521 [72]
3 years ago
11

The label on a bottle of medicine reads​ "Each 5 mL teaspoonful contains​ glucose, 1.87​ g; levulose, 1.87​ g; and phosphoric​ a

cid, 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
Chemistry
1 answer:
Alexandra [31]3 years ago
4 0

(a) 43.6 mg; (b) 520 mg

(a) <em>Mass of phosphoric acid (PA) in a dose </em>

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

(b) <em>Mass of PA in the bottle </em>

<em>Step 1</em>. Convert <em>ounces to millilitres </em>

Volume = 4 oz × (30 mL/1 oz) = 120 mL

<em>Step 2.</em> Calculate the mass of PA

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

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