Question 1

A nurse needs to administer 0.250 g of a medication, but the tablets available are labeled as 50 mg each. How many tablets should the nurse give to the patient? (1 g = 1000 mg)

Accepted Answer

5.0 tablets

Question 2

Which of the following measurements is expressed in an SI base unit?

Accepted Answer

3.0 m

Question 3

A patient’s blood sample has a mass of 15.0 g and a volume of 14.2 mL. What is the density of the blood sample in $$\mathrm{g/mL}$$? (Round to the correct number of significant figures.)

Accepted Answer

$$1.06\ \mathrm{g/mL}$$

Question 4

Which of the following numbers contains three significant figures?

Accepted Answer

0.00476

Question 5

A doctor orders 1.5 L of saline solution to be administered intravenously. How many milliliters is this? (1 L = 1000 mL)

Accepted Answer

1,500 mL

Question 6

Which of the following is an exact number?

Accepted Answer

1 kg = 1000 g

Question 7

A nurse measures a patient’s temperature as 38.5 $$^{\circ}C. $$What type of measurement is this?

Accepted Answer

Temperature

Question 8

Which of the following is the correct equality for converting centimeters to meters?

Accepted Answer

$$1\ \mathrm{cm} = 0.01\ \mathrm{m}$$

Question 9

A sample of urine has a density of $$1.015\ \mathrm{g/mL}. $$What is its specific gravity?

Accepted Answer

$$1.015$$

Question 10

A medication label states that each tablet contains 250 mg of active ingredient. If a patient needs 1.00 g of the ingredient, how many tablets should be administered?

Accepted Answer

4 tablets

Question 11

Which of the following is the correct conversion factor for $$1\ \mathrm{kg} = 2.20\ \mathrm{lb}$$?

Accepted Answer

$$\frac{1\ \mathrm{kg}}{2.20\ \mathrm{lb}}$$

Question 12

A patient’s IV bag contains 0.500 L of solution. How many quarts is this? (1 L = 1.06 qt)

Accepted Answer

0.530 qt

Question 13

Which of the following numbers has four significant figures?

Accepted Answer

0.00340

Question 14

A nurse needs to convert 2.5 hours to seconds. What is the correct answer? (1 h = 60 min, 1 min = 60 s)

Accepted Answer

9000 s

Question 15

A 48.0-g sample of metal is placed in a graduated cylinder containing 25.0 mL of water. The water level rises to 33.0 mL. What is the density of the metal?

Accepted Answer

$$6.0\ \mathrm{g/mL}$$

Question 16

Which of the following is a correct statement about significant figures?

Accepted Answer

Zeros at the end of a decimal number are significant.

Question 17

A nurse needs to prepare 0.150 mg of Synthroid using tablets that contain 75 mcg each. How many tablets are required? (1 mg = 1000 mcg)

Accepted Answer

2 tablets

Question 18

Which of the following is the correct equality for converting liters to milliliters?

Accepted Answer

$$1\ \mathrm{L} = 1000\ \mathrm{mL}$$

Question 19

A patient’s blood volume is 5.9 qt. If the density of blood is $$1.06\ \mathrm{g/mL}$$ and $$1\ \mathrm{pt} = 473\ \mathrm{mL}$$, what is the mass of blood in grams? (1 qt = 2 pt)

Accepted Answer

5,940 g

Chemistry and Measurements: Foundations for GOB Chemistry

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