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

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Tired from studying endless hours with no results? Do you dream to obtain an A+ in your class? Look no further because we have the right solution for you. With the test bank for Chemistry in Focus A Molecular View of Our World,Tro,7e you will be able to practice and prepare for tests via authentic exam questions written by top professors in the field. The test bank allows you to access many exam-like questions from different difficulties. Buy the test bank now and start studying for exams like a guru!

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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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