Question

The label on a bottle of medicine reads Each 5 mL teaspoonful contains glucose, 1.87 g; levulose, 1.87 g; and phosphoric acid, 21.5 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. (1 oz = 30 ml)
a. There are ____ mg of phosphoric acid in two teaspoons. (Simplify your answer. Type an integer or a decimal.)

Answer 1

There are 43 mg of phosphoric acid in two teaspoons of the medicine. For the entire 4 ounce bottle, which is equivalent to 120 mL, there are 516 mg of phosphoric acid.

Step-by-step explanation:

To calculate the amount of phosphoric acid in two teaspoons given that one teaspoon contains 21.5 mg:

Multiply the amount in one teaspoon by the number of teaspoons: 21.5 mg/teaspoon × 2 teaspoons = 43 mg.

Therefore, there are 43 mg of phosphoric acid in two teaspoons.

To find the total quantity of phosphoric acid in a 4 ounce bottle:

First, convert ounces to milliliters: 4 ounces × 30 mL/ounce = 120 mL.

Then, calculate the number of 5 mL teaspoons in the bottle: 120 mL ÷ 5 mL/teaspoon = 24 teaspoons.

Finally, multiply the number of teaspoons by the amount of phosphoric acid in one teaspoon: 24 teaspoons × 21.5 mg/teaspoon = 516 mg.

Thus, the bottle contains 516 mg of phosphoric acid.