Question 1

What is the density of a substance with a mass of 45.00 g and a volume of 26.4 mL?

Accepted Answer

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 
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

Question 2

What is the mass of 53 mL of ethanol, which has a density of 0.79 g/mL?

Accepted Answer

A)  67.1 g 
B)  41.9 g 
C)  42 g 
D)  67 g 
E)  53 g 
A)  67.1 g 
B)  41.9 g 
C)  42 g 
D)  67 g 
E)  53 g

Question 3

The ratio of the mass of a substance to its volume is its

Accepted Answer

A)  specific gravity. 
B)  density. 
C)  buoyancy. 
D)  weight. 
E)  conversion factor. 
A)  specific gravity. 
B)  density. 
C)  buoyancy. 
D)  weight. 
E)  conversion factor.

Question 4

Mercury has a specific gravity of 13.6. How many milliliters of mercury have a mass of 0.35 kg?

Accepted Answer

A)  0.0257 mL 
B)  0.026 mL 
C)  25.7 mL 
D)  26 mL 
E)  4760 mL 
A)  0.0257 mL 
B)  0.026 mL 
C)  25.7 mL 
D)  26 mL 
E)  4760 mL

Question 5

What is the conversion factor for the relationship between millimeters and centimeters?

Accepted Answer

A)  1 mm/1 cm 
B)  10 mm/1 cm 
C)  1 cm/1 mm 
D)  100 mm/1 cm 
E)  10 cm/1 mm 
A)  1 mm/1 cm 
B)  10 mm/1 cm 
C)  1 cm/1 mm 
D)  100 mm/1 cm 
E)  10 cm/1 mm

Question 6

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

Accepted Answer

A)  19 mg. 
B)  53 mg. 
C)  1.6 mg. 
D)  5.0 mg. 
E)  0.59 mg. 
A)  19 mg. 
B)  53 mg. 
C)  1.6 mg. 
D)  5.0 mg. 
E)  0.59 mg.

Question 7

The density of a solution is 1.18 g/mL. Its specific gravity is

Accepted Answer

A)  11.8. 
B)  0.118. 
C)  0.847. 
D)  1.18. 
E)  1.2. 
A)  11.8. 
B)  0.118. 
C)  0.847. 
D)  1.18. 
E)  1.2.

Question 8

A 50.0 mL urine sample has a mass of 50.7 g. The specific gravity of the urine is

Accepted Answer

A)  1.014 g/mL. 
B)  0.986 g/L. 
C)  1.01. 
D)  0.986. 
E)  50.7. 
A)  1.014 g/mL. 
B)  0.986 g/L. 
C)  1.01. 
D)  0.986. 
E)  50.7.

Question 9

A value of 345 mm is a measure of

Accepted Answer

A)  density 
B)  mass 
C)  temperature 
D)  volume 
E)  distance 
A)  density 
B)  mass 
C)  temperature 
D)  volume 
E)  distance

Question 10

The number of significant figures in the measurement of 45.030 mm is

Accepted Answer

A)  none. 
B)  three. 
C)  four. 
D)  five. 
E)  six. 
A)  none. 
B)  three. 
C)  four. 
D)  five. 
E)  six.

Question 11

A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is reported?

Accepted Answer

A)  423 
B)  424 
C)  420 
D)  423.6 
E)  423.7 
A)  423 
B)  424 
C)  420 
D)  423.6 
E)  423.7

Question 12

Which of the answers for the following conversions contains the correct number of significant figures?

Accepted Answer

A)  2.543 m × $\frac { 39.4 \mathrm { in } } { 1 \mathrm {~m} }$ = 100.1942 in 
B)  2 L × $\frac { 1.06 \mathrm { qt } } { 1 \mathrm {~L} }$ = 2.12 qt 
C)  24.95 min × $\frac { 1 \mathrm { hr } } { 60 \mathrm {~min} }$ = 0.4158 hr 
D)  12.0 ft × $\frac { 12 \mathrm { in } } { 1 \mathrm { ft } }$ × $\frac { 2.54 \mathrm {~cm} } { 1 \mathrm { in } }$ = 370 cm 
E)  24.0 kg × $\frac { 11 \mathrm {~b} } { 2.20 \mathrm {~kg} }$ = 11 lb 
A)  2.543 m × $\frac { 39.4 \mathrm { in } } { 1 \mathrm {~m} }$ = 100.1942 in 
B)  2 L × $\frac { 1.06 \mathrm { qt } } { 1 \mathrm {~L} }$ = 2.12 qt 
C)  24.95 min × $\frac { 1 \mathrm { hr } } { 60 \mathrm {~min} }$ = 0.4158 hr 
D)  12.0 ft × $\frac { 12 \mathrm { in } } { 1 \mathrm { ft } }$ × $\frac { 2.54 \mathrm {~cm} } { 1 \mathrm { in } }$ = 370 cm 
E)  24.0 kg × $\frac { 11 \mathrm {~b} } { 2.20 \mathrm {~kg} }$ = 11 lb

Question 13

A value of 36 mL is a measure of

Accepted Answer

A)  density 
B)  mass 
C)  temperature 
D)  volume 
E)  distance 
A)  density 
B)  mass 
C)  temperature 
D)  volume 
E)  distance

Question 14

How many significant figures are in the number 0.00208?

Accepted Answer

A)  six 
B)  two 
C)  three 
D)  four 
E)  five 
A)  six 
B)  two 
C)  three 
D)  four 
E)  five

Question 15

How many centimeters are there in 57.0 in.?

Accepted Answer

A)  22 cm 
B)  0.0445 cm 
C)  145 cm 
D)  22.4 cm 
E)  140 cm 
A)  22 cm 
B)  0.0445 cm 
C)  145 cm 
D)  22.4 cm 
E)  140 cm

Question 16

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?

Accepted Answer

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 
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

Question 17

The branch of chemistry that is the study of the reactions that take place in biological systems is called

Accepted Answer

A)  organic chemistry 
B)  geochemistry 
C)  physical chemistry 
D)  biological chemistry 
E)  general chemistry 
A)  organic chemistry 
B)  geochemistry 
C)  physical chemistry 
D)  biological chemistry 
E)  general chemistry

Exam 1: Chemistry and Measurements

What is the density of a substance with a mass of 45.00 g and a volume of 26.4 mL?

What is the mass of 53 mL of ethanol, which has a density of 0.79 g/mL?

The ratio of the mass of a substance to its volume is its

Mercury has a specific gravity of 13.6. How many milliliters of mercury have a mass of 0.35 kg?

What is the conversion factor for the relationship between millimeters and centimeters?

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

The density of a solution is 1.18 g/mL. Its specific gravity is

A 50.0 mL urine sample has a mass of 50.7 g. The specific gravity of the urine is

A value of 345 mm is a measure of

The number of significant figures in the measurement of 45.030 mm is

A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is reported?

Which of the answers for the following conversions contains the correct number of significant figures?

A value of 36 mL is a measure of

How many significant figures are in the number 0.00208?

How many centimeters are there in 57.0 in.?

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?

The branch of chemistry that is the study of the reactions that take place in biological systems is called

Energy and Matter

Atoms and Elements

Nuclear Chemistry

Compounds and Their Bonds

Chemical Reactions and Quantities

Gases

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Introduction to Organic Chemistry: Alkanes

Alkenes, Alkynes, and Aromatic Compounds

Alcohols, Phenols, Thiols, and Ethers

Aldehydes, Ketones, and Chiral Molecules

Carbohydrates

Carboxylic Acids and Esters

Lipids

Amines and Amides

Amino Acids and Proteins

Enzymes and Vitamins

Nucleic Acids and Protein Synthesis

Metabolic Pathways for Carbohydrates

Metabolism and Energy Production

Metabolic Pathways for Lipids and Amino Acids

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