Each 5-mL portion of Maalox contains 400 mg of magnesium hydroxide, and 40 mg of simethicone. If the recommended dose is 2 teaspoons 4 times a day, how many grams of each substance would an individual take in a 24-hour period? (1 teaspoon= 5 mL)
Your patient would get 8 times more magnesium hydroxide and simethicone than a teaspoon contains.
So, you know that you have
This means that, during a 24-hour period, your patient will get
Since a teaspoon holds
If you these values to one sig fig, the number of sig figs in 5 mL, 400 mg, and 40 mg, the answer will be
Since you must give the answer in grams, use a simple conversion factor to go from mg to g