Question 1

What mass of sugar,in grams,would be obtained from the evaporation of water from 1.5 kg of a sugar solution which is 10.5% sugar by mass?

Accepted Answer

A) 0.1575 g 
B) 0.158 g 
C) 157.5 g 
D) 15.8 g 
E) 160 g 
A) 0.1575 g 
B) 0.158 g 
C) 157.5 g 
D) 15.8 g 
E) 160 g

Question 2

The density of air under ordinary conditions at 25 °C is 1.19 g L-1.How many kilograms of air are in a room that measures  
And has a 8.00 ft ceiling?   (exactly);   )

Accepted Answer

A) 2.93 
B) 0.121 
C) 3.26 ×   
D) 0.0770 
E) 32.6 
A) 2.93 
B) 0.121 
C) 3.26 ×   
D) 0.0770 
E) 32.6

Question 3

A physical property is the ability of a sample of matter to undergo a change in composition under certain conditions.

Accepted Answer

A) True 
 B)False

Question 4

A block of wood has dimensions of  
And has a mass of 3.0 kg.What is the density of the wood?

Accepted Answer

A) 1400 g/mL 
B) 0.071 g/mL 
C) 0.71 g/mL 
D) 1.4 g/mL 
E) 140 g/mL 
A) 1400 g/mL 
B) 0.071 g/mL 
C) 0.71 g/mL 
D) 1.4 g/mL 
E) 140 g/mL

Question 5

The diameter of an atom is approximately 1 × 10-10 m.What is the diameter in millimeters?

Accepted Answer

A) 1 × 10-16 mm 
B) 1 × 10-13 mm 
C) 1 × 10-7 mm 
D) 1 × 10-4 mm 
A) 1 × 10-16 mm 
B) 1 × 10-13 mm 
C) 1 × 10-7 mm 
D) 1 × 10-4 mm

Question 6

What is the mass of a 468 mL sample of ethanol? The density of ethanol is 0.789 g/mL.

Accepted Answer

A) 234 g 
B) 739 g 
C) 468 g 
D) 593 g 
E) 369 g 
A) 234 g 
B) 739 g 
C) 468 g 
D) 593 g 
E) 369 g

Question 7

Sulfuric acid is:

Accepted Answer

A) a homogeneous mixture 
B) a compound 
C) an element 
D) a heterogeneous mixture 
E) an atom 
A) a homogeneous mixture 
B) a compound 
C) an element 
D) a heterogeneous mixture 
E) an atom

Question 8

What is the correct answer,with the proper number of significant figures,for the following calculation?
(1815 - 1806)× (9.11 × 7.92)

Accepted Answer

The answer of What is the correct answer,with the proper...

Question 9

The mass of a proton is 1.67 × 10-27 kg.What is the mass of a proton in picograms?

Accepted Answer

A) 1.67 × 10-18 pg 
B) 1.67 × 10-15 pg 
C) 1.67 × 10-12 pg 
D) 1.67 × 10-9 pg 
A) 1.67 × 10-18 pg 
B) 1.67 × 10-15 pg 
C) 1.67 × 10-12 pg 
D) 1.67 × 10-9 pg

Question 10

Several values close together guarantee good accuracy.

Accepted Answer

A) True 
 B)False

Question 11

The prefix "milli" and the prefix "micro" correspond,respectively,to the factors:

Accepted Answer

A) 10-3 and 10-6 
B) 10-6 and 10-9 
C) 10-3 and 10-12 
D) 10-1 and 10-6 
E) 103 and 106 
A) 10-3 and 10-6 
B) 10-6 and 10-9 
C) 10-3 and 10-12 
D) 10-1 and 10-6 
E) 103 and 106

Question 12

Calculate the length of a steel cable (density 7.91 g/cm3)with a mass of 160.0 g and cross-sectional area of 0.500 cm2.

Accepted Answer

A) 40.5 cm 
B) 20.23 cm 
C) 40.46 cm 
D) 20.2 cm 
E) 10.1 cm 
A) 40.5 cm 
B) 20.23 cm 
C) 40.46 cm 
D) 20.2 cm 
E) 10.1 cm

Question 13

How many significant figures are there in the answer to the following problem?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Question 14

What is the answer to the correct number of significant figures of the following calculation?

Accepted Answer

A) 2.84 
B) 30 
C) 25.01 
D) 25.0 
E) 25 
A) 2.84 
B) 30 
C) 25.01 
D) 25.0 
E) 25

Question 15

A theory is a model used to explain natural laws and make predictions about natural phenomena.

Accepted Answer

A) True 
 B)False

Question 16

The estimated costs for remodelling the interior of an apartment are three 1-gallon cans of paint at  $13.22 Each,two paint brushes at $9.53 Each,and $135 For a helper.The total estimated cost with the appropriate significant figures is $

Accepted Answer

A) 193.72 
B) 1.9 ×   
C) 194 
D) 2 ×   
E) 193.7 
A) 193.72 
B) 1.9 ×   
C) 194 
D) 2 ×   
E) 193.7

Question 17

Round the following number to four significant figures and express the result in standard exponential notation:
29,724.33

Accepted Answer

A) 29,720 
B) 29.72 × 103 
C) 0.2972 × 105 
D) 2.972 × 104 
E) 2.972 × 10-4 
A) 29,720 
B) 29.72 × 103 
C) 0.2972 × 105 
D) 2.972 × 104 
E) 2.972 × 10-4

Question 18

The result of addition can have more significant figures than any of the numbers added.

Accepted Answer

A) True 
 B)False

Question 19

What is the answer,to the correct number of significant figures,of the following calculation?

Accepted Answer

A) 16.7068 
B) 16.707 
C) 16.71 
D) 16.7 
E) 16 
A) 16.7068 
B) 16.707 
C) 16.71 
D) 16.7 
E) 16

Question 20

How many significant figures are there in the answer to the following problem?
(9.992 × 3.200)+ 0.610

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Exam 1: Matter: Its Properties and Measurement

What mass of sugar,in grams,would be obtained from the evaporation of water from 1.5 kg of a sugar solution which is 10.5% sugar by mass?

The density of air under ordinary conditions at 25 °C is 1.19 g L-1.How many kilograms of air are in a room that measures And has a 8.00 ft ceiling? (exactly); )

A physical property is the ability of a sample of matter to undergo a change in composition under certain conditions.

A block of wood has dimensions of And has a mass of 3.0 kg.What is the density of the wood?

The diameter of an atom is approximately 1 × 10-10 m.What is the diameter in millimeters?

What is the mass of a 468 mL sample of ethanol? The density of ethanol is 0.789 g/mL.

Sulfuric acid is:

What is the correct answer,with the proper number of significant figures,for the following calculation? (1815 - 1806)× (9.11 × 7.92)

The mass of a proton is 1.67 × 10-27 kg.What is the mass of a proton in picograms?

Several values close together guarantee good accuracy.

The prefix "milli" and the prefix "micro" correspond,respectively,to the factors:

Calculate the length of a steel cable (density 7.91 g/cm3)with a mass of 160.0 g and cross-sectional area of 0.500 cm2.

How many significant figures are there in the answer to the following problem?

What is the answer to the correct number of significant figures of the following calculation?

A theory is a model used to explain natural laws and make predictions about natural phenomena.

The estimated costs for remodelling the interior of an apartment are three 1-gallon cans of paint at $13.22 Each,two paint brushes at $9.53 Each,and $135 For a helper.The total estimated cost with the appropriate significant figures is $

Round the following number to four significant figures and express the result in standard exponential notation: 29,724.33

The result of addition can have more significant figures than any of the numbers added.

What is the answer,to the correct number of significant figures,of the following calculation?

How many significant figures are there in the answer to the following problem? (9.992 × 3.200)+ 0.610

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

The density of air under ordinary conditions at 25 °C is 1.19 g L^-1.How many kilograms of air are in a room that measures And has a 8.00 ft ceiling? (exactly); )

The diameter of an atom is approximately 1 × 10^-10 m.What is the diameter in millimeters?

The mass of a proton is 1.67 × 10^-27 kg.What is the mass of a proton in picograms?

Calculate the length of a steel cable (density 7.91 g/cm³)with a mass of 160.0 g and cross-sectional area of 0.500 cm².