49) A dose of aspirin of 5.0 mg per kilogram of body weight has been prescribed to reduce the fever of an
infant weighing 8.5 pounds. The number of milligrams of aspirin that should be administered is
A) 19 mg.
B) 53 mg.
C) 1.6 mg.
D) 5.0 mg.
E) 0.59 mg.
50) A doctor’s order is 0.125 g of ampicillin. The liquid suspension on hand contains 250 mg/5.0 mL. How
many milliliters of the suspension are required?
A) 0.0025 mL
B) 3.0 mL
C) 2.5 mL
D) 6.3 mL
E) 0.0063 mL
51) A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to a volume
of 77.0 mL. What is the density of the gold?
A) 10.4 g/mL
B) 6.77 g/mL
C) 1.00 g/mL
D) 0.0518 g/mL
E) 19.3 g/mL
52) Which one of the following substances will float in gasoline, which has a density of 0.66 g/mL?
A) table salt (density = 2.16 g/mL)
B) balsa wood (density = 0.16 g/mL)
C) sugar (density = 1.59 g/mL)
D) aluminum (density = 2.70 g/mL)
E) mercury (density = 13.6 g/mL)
53) What is the mass of 2.00 L of an intravenous glucose solution with a density of 1.15 g/mL?
A) 0.023 kg
B) 2.30 kg
C) 1.15 kg
D) 0.015 kg
E) 0.58 kg
54) Mercury has a specific gravity of 13.6. How many milliliters of mercury have a mass of 0.35 kg?
A) 0.0257 mL
B) 0.026 mL
C) 25.7 mL
D) 26 mL
E) 4760 mL
55) What is the density of a substance with a mass of 45.00 g and a volume of 26.4 mL?
A) 1.70 g/mL
B) 1.7 g/mL
C) 0.59 g/mL
D) 0.587 g/mL
E) 45.0 g/mL
56) A liquid has a volume of 34.6 mL and a mass of 46.0 g. What is the density of the liquid?
A) 1.00 g/mL
B) 1.33 g/mL
C) 0.752 g/mL
D) 1330 g/mL
E) 0.663 g/mL
57) What is the mass of 53 mL of ethanol, which has a density of 0.79 g/mL?
A) 67.1 g
B) 41.9 g
C) 42 g
D) 67 g
E) 53 g
58) The density of a solution is 0.847 g/mL. Its specific gravity is
A) 11.8.
B) 0.118.
C) 0.847.
D) 1.18.
E) 1.2.
59) The specific gravity of a solution is 1.18. Its density is
A) 11.8 g/mL.
B) 0.118 g/mL.
C) 0.847 g/mL.
D) 1.18 g/mL.
E) 1.2 g/mL.
60) Diamond has a density of 3.52 g/mL. What is the volume in cubic centimeters of a diamond with a
mass of 15.1 g?
A) 4.3 cm3
B) 4.29 cm3
C) 0.233 cm3
D) 53 cm3
E) 53.2 cm3
61) The ratio of the mass of a substance to its volume is its
A) specific gravity.
B) density.
C) buoyancy.
D) weight.
E) conversion factor.
62) Which of the following is often used to determine an individual’s percentage of body fat?
A) temperature
B) height
C) weight loss
D) weight gain
E) density
63) A 50.0 mL urine sample has a mass of 50.7 g. The specific gravity of the urine is
A) 1.014 g/mL.
B) 0.986 g/L.
C) 1.01.
D) 0.986.
E) 50.7.
2.2 Short Answer Questions
Round off each of the following to three significant figures.
1) 504.85
2) 8.3158
3) 25 225
4) 58.5422
5) 6.3477 × 104
6) 399870
7) 0.003 408 8
8) 0.008 090 cm
9) 680 000 km
10) 28.050 km
11) 0.0005 L
12) 75.00 m
13) 2.043 × 104 mm
14) 6.1 × 10-5 mL
15) 9.00 × 106 g
2.3 True/False Questions
1) The basic unit of mass in the metric system is the pound.
2) The liter is a unit of volume in the metric system.
3) The number 0.0500 has four significant figures.
4) The number 650 000 has two significant figures.
5) When the measured number 0.0090 is multiplied by the measured number 87.10, the answer has two
significant figures.
6) When the measured number 675 is added to the measured number 87.10, the answer should be
rounded to the ones place.
7) A μg is larger than a mg.
8) There are 1000 μg in a mg.
9) A cubic centimeter is a unit of length.
10) 1 kilogram is the same as 1000 mg.
11) 1 milliliter is the same as 1000 L.
12) The density of water is 1 kg/mL.
13) Specific gravity has no units.
2.4 Matching Questions
Are the numbers in each of the following statements measured or exact?
A) measured
B) exact
1) In the U.S. system there are 5280 feet in one mile.
Objective: 2.2
Global Outcomes: GO2
2) The patient’s blood sugar level is 350 mg/dL.
Objective: 2.2
Global Outcomes: GO2
3) There are 452 pages in a book.
Objective: 2.2
Global Outcomes: GO2
4) The rabbit weighs 2.5 pounds.
Objective: 2.2
Global Outcomes: GO2
5) There are 100 capsules in the bottle.
Objective: 2.2
Global Outcomes: GO2
6) I lost 14 pounds on my diet last month.
Objective: 2.2
Global Outcomes: GO2
7) 1 liter is equal to 1.06 quarts.
Objective: 2.2
Global Outcomes: GO2
8) The patient’s temperature is 100.1 °F.
Objective: 2.2
Global Outcomes: GO2
Match the type of measurement to the unit given below.
A) volume
B) mass
C) temperature
D) distance
E) density
9) milliliter
Objective: 2.1
Global Outcomes: GO2
10) mm
Objective: 2.1
Global Outcomes: GO2
11) gram
Objective: 2.1
Global Outcomes: GO2
12) 125 K
Objective: 2.1
Global Outcomes: GO2
13) kilometer
Objective: 2.1
Global Outcomes: GO2
14) milligram
Objective: 2.1
Global Outcomes: GO2
Select the correct prefix to complete the equality.
A) 1 × 1012
B) 1000
C) 1
D) 0.1
E) 0.01
F) 0.001
G) 1 × 10–12
H) 10
I) 100
15) 1 g = ________ kg
Objective: 2.4
Global Outcomes: GO2
16) 1 m = ________ mm
Objective: 2.4
Global Outcomes: GO2
17) 1 cm = ________ mm
Objective: 2.4
Global Outcomes: GO2
18) 1 dL = ________ mL
Objective: 2.4
Global Outcomes: GO2
19) 1 kg = ________ g
Objective: 2.4
Global Outcomes: GO2
20) 1 pg = ________ g
Objective: 2.4
Global Outcomes: GO2
21) 1 g = ________ pg
Objective: 2.4
Global Outcomes: GO2
22) 1 mL = ________ cc
Objective: 2.4
Global Outcomes: GO2