Question

question 3 (2.5 points)
which of the following measurements is used in the apothecary system for weight?
○ grain
○ milligram
○ gram
○ milliliter

question 4 (2.5 points)
a patient reports taking three teaspoons of a liquid medication every four hours at home. how should the total daily amount of this medication be documented using the metric system?
○.9 l
○ 0.90 l
○ 90 ml
○ 90 ccs

Explanation:

Question 3

The apothecary system uses "Grain" for weight. Milligram, Gram are metric units, and Milliliter is a volume unit (not weight), so Grain is the correct option for apothecary weight measurement.

Step1: Determine doses per day

There are 24 hours in a day. If the patient takes the medication every 4 hours, the number of doses per day is $\frac{24}{4} = 6$ doses.

Step2: Calculate total teaspoons per day

Each dose is 3 teaspoons, so total teaspoons per day is $3\times6 = 18$ teaspoons.

Step3: Convert teaspoons to milliliters

1 teaspoon is approximately 5 milliliters. So total milliliters is $18\times5 = 90$ mL. Also, 1 mL = 1 CC, but the question asks for metric system documentation, and 90 mL is the correct metric volume unit here (L is too large as 90 mL = 0.09 L, not 0.9 or 0.90 L).

Answer:

A. Grain

Question 4