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Digital Test Bank - Chemistry in Focus A Molecular View of Our World,Tro,7e

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Uploaded on
June 2, 2024
Number of pages
255
Written in
2023/2024
Type
Exam (elaborations)
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Questions & answers

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Chapter 02
1. The result of an addition or subtraction should have the same number of decimal places as the quantity carrying the
_____.
a. the most precise number
b. the least precise number
c. highest number of significant figures
d. least number of significant figures
e. highest decimal numbers
ANSWER: b
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Measurement
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:03 AM

2. The result of a multiplication or division should carry the same number of significant digits as the factor with the
_____.
a. the most precise number
b. the least precise number
c. highest number of significant figures
d. least number of significant figures
e. highest decimal numbers
ANSWER: d
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Measurement
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:06 AM

3. How many significant figures are there in the number 10.00?
a. 1
b. 2
c. 3
d. 4
e. 0
ANSWER: d
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Measurement

Copyright Cengage Learning. Powered by Cognero. Page 1

,Chapter 02

DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:23 AM

4. How many significant figures are there in the number 10,100?
a. 1
b. 3
c. 4
d. 5
e. 0
ANSWER: b
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Measurement
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:25 AM

5. Determine the density of a 50.0 g sample of mercury having a volume of 3.66 mL. Carry out the calculation to the
correct number of significant digits.
a. 13.66 g/mL
b. 13.7 mL
c. 183 g/mL
d. 0.0732 g/mL
e. 0.073 g/mL
ANSWER: b
POINTS: 1
DIFFICULTY: Moderate
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Density: A Measure of Compactness
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:27 AM

6. Determine the density of a 100.0 g sample of mercury having a volume of 7.36 cm3. Carry out the calculation to the
correct number of significant digits.
a. 13.58 g/cm3
b. 13.66 g/cm3
c. 183 g/cm3
d. 0.0732 g/cm3
e. 0.073 g/cm3
ANSWER: a
POINTS: 1

Copyright Cengage Learning. Powered by Cognero. Page 2

,Chapter 02

DIFFICULTY: Moderate
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Density: A Measure of Compactness
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:34 AM

7. Determine the mass in grams of a gold sample that occupies a volume of 16.39 mL? Gold has a density of 19.3 g/mL.
a. 0.118 g
b. 0.316 g
c. 0.849 g
d. 1.18 g
e. 316 g
ANSWER: e
POINTS: 1
DIFFICULTY: Moderate
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Density: A Measure of Compactness
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:35 AM

8. Determine the volume occupied by 1.5 g of ethyl alcohol. The density of ethyl alcohol is 0.789 g/mL.
a. 1.9 mL
b. 1.3 mL
c. 0.53 mL
d. 0.526 mL
e. 1.331 mL
ANSWER: a
POINTS: 1
DIFFICULTY: Moderate
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Density: A Measure of Compactness
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 4/3/2014 7:50 AM

9. Chloroform is a commonly used anesthetic with a density of 1.483 g/mL. Determine the volume of chloroform needed
to administer a 9.37 g sample of the anesthetic.
a. 0.158 g
b. 6.32 g
c. 13.9 g
d. 13.89 g
e. 0.0632 g

Copyright Cengage Learning. Powered by Cognero. Page 3

, Chapter 02

ANSWER: b
POINTS: 1
DIFFICULTY: Moderate
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Density: A Measure of Compactness
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:42 AM

10. If 15.0 mL of a metal has a mass of 103.0 g, what is the density of the metal?
a. 6.87 g/mL
b. 1550 g/ mL
c. 0.146 g/mL
d. 1.46 g/mL
e. 9.867 g/mL
ANSWER: a
POINTS: 1
DIFFICULTY: Moderate
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Density: A Measure of Compactness
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:44 AM

11. The density of gold is 19.3 g/mL. If the current price of gold is $56.75 per gram, what is the volume of a nugget of
gold worth $150.00?
a. 1.15 mL
b. 0.868 mL
c. 1.72 mL
d. 1.27 mL
e. 0.137 mL
ANSWER: e
POINTS: 1
DIFFICULTY: Moderate
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Density: A Measure of Compactness
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 4/3/2014 7:50 AM

12. What is the standard SI unit for mass?
a. Gram
b. Pound
c. Ounce

Copyright Cengage Learning. Powered by Cognero. Page 4

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