Question 1

Round 0.00274485 to 1 significant figure.

Accepted Answer

A)  0.00 
B)  0.003 
C)  0.0027 
D)  0.00274 
E)  0.002745 
A)  0.00 
B)  0.003 
C)  0.0027 
D)  0.00274 
E)  0.002745

Question 2

The volume of space occupied by a beryllium atom is 6.0 × 10-30 m3.What is this volume in units of nm3?

Accepted Answer

A)  6.0 × 10-57 nm 
B)  6.0 × 10-21 nm 
C)  6.0 × 10-12 nm 
D)  6.0 × 10-3 nm 
E)  6.0 × 106 nm 
A)  6.0 × 10-57 nm 
B)  6.0 × 10-21 nm 
C)  6.0 × 10-12 nm 
D)  6.0 × 10-3 nm 
E)  6.0 × 106 nm

Question 3

A graph of a certain set of data is shown to be linear with a trendline of y = 32.0x + 8.What is the sign and slope of the trendline obtained from this data?

Accepted Answer

A)  positive,32.0 
B)  negative,32.0 
C)  positive,8 
D)  negative,8 
E)  positive,40.0 
A)  positive,32.0 
B)  negative,32.0 
C)  positive,8 
D)  negative,8 
E)  positive,40.0

Question 4

The number of significant figures in 2.1948 × 10-9 nm is _____.

Accepted Answer

A)  5 
B)  6 
C)  3 
D)  7 
E)  4 
A)  5 
B)  6 
C)  3 
D)  7 
E)  4

Question 5

Which of the following is the smallest mass?

Accepted Answer

A)  1.5 × 108 pg 
B)  1.5 × 106 ng 
C)  1.5 × 103 μg 
D)  1.5 × 10-1 mg 
E)  1.5 × 10-5 g 
A)  1.5 × 108 pg 
B)  1.5 × 106 ng 
C)  1.5 × 103 μg 
D)  1.5 × 10-1 mg 
E)  1.5 × 10-5 g

Question 6

How many significant figures are there in the number 4.700?

Accepted Answer

A)  1 
B)  5 
C)  3 
D)  4 
E)  2 
A)  1 
B)  5 
C)  3 
D)  4 
E)  2

Question 7

How many significant figures are there in the value 0.0490 g/mL?

Accepted Answer

A)  4 
B)  3 
C)  2 
D)  5 
E)  6 
A)  4 
B)  3 
C)  2 
D)  5 
E)  6

Question 8

Express the result of the following calculation in scientific notation: 437 cm × 885 cm

Accepted Answer

A)  38.7 × 104 cm2 
B)  38.7 × 105 cm2 
C)  4 × 104 cm2 
D)  4 × 106 cm2 
E)  4 × 105 cm2 
A)  38.7 × 104 cm2 
B)  38.7 × 105 cm2 
C)  4 × 104 cm2 
D)  4 × 106 cm2 
E)  4 × 105 cm2

Question 9

The distance from Austin,Texas,to Lincoln,Nebraska,is 822 miles by car.Which of the following series of calculations will yield this distance in units of kilometers? (1 in = 2.54 cm (exact),1 mi = 5280 ft (exact),1 ft = 12 in (exact))

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 10

How many 500-mg aspirin tablets can be made from 50.0 kg of aspirin?

Accepted Answer

A)  10,000,000 
B)  1,000,000 
C)  1000 
D)  10,000 
E)  100,000 
A)  10,000,000 
B)  1,000,000 
C)  1000 
D)  10,000 
E)  100,000

Question 11

The melting point of a particular solid is 2863 K.This corresponds to

Accepted Answer

A)  4694°F. 
B)  3136°C. 
C)  2529°C. 
D)  4630°F. 
E)  1471°F. 
A)  4694°F. 
B)  3136°C. 
C)  2529°C. 
D)  4630°F. 
E)  1471°F.

Question 12

Silver chloride (AgCl)is relatively insoluble in water.At 25 °C,1.3 × 103 L of water is needed to dissolve 2.5 g of AgCl.What mass (in milligrams)of AgCl will dissolve in 1.0 L of water?

Accepted Answer

A)  1.9 × 10-3 mg 
B)  1.9 mg 
C)  0.52 mg 
D)  520 mg 
E)  1.9 × 10-6 mg 
A)  1.9 × 10-3 mg 
B)  1.9 mg 
C)  0.52 mg 
D)  520 mg 
E)  1.9 × 10-6 mg

Question 13

The average speed of oxygen molecules at 570°C is 1.49 × 105 cm/s.Which of the following calculations would convert this speed to units of miles per hour?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 14

The density of a particular solid is 7.62 g/cm3 at 25°C.What is its density in kilograms per cubic meter (kg/m3)?

Accepted Answer

A)  7.62 × 1010 
B)  7.62 × 101 
C)  7.62 × 10-2 
D)  7.62 × 103 
E)  7.62 × 107 
A)  7.62 × 1010 
B)  7.62 × 101 
C)  7.62 × 10-2 
D)  7.62 × 103 
E)  7.62 × 107

Question 15

A piece of metal (mass = 17.268 g)is placed in 10.50 mL of chloroform (d = 1.498 g/mL)in a 25-mL graduated cylinder.The chloroform level increases to 15.46 mL.The best value for density of this metal from these data is

Accepted Answer

A)  1.12 g/mL. 
B)  2.32 g/mL. 
C)  3.481 g/mL. 
D)  5.22 g/mL. 
E)  3.48 g/mL. 
A)  1.12 g/mL. 
B)  2.32 g/mL. 
C)  3.481 g/mL. 
D)  5.22 g/mL. 
E)  3.48 g/mL.

Question 16

Express the volume 622.8 cm3 in liters.

Accepted Answer

A)  6.228 L 
B)  0.06228 L 
C)  0.6228 L 
D)  62.28 L 
E)  622.8 L 
A)  6.228 L 
B)  0.06228 L 
C)  0.6228 L 
D)  62.28 L 
E)  622.8 L

Question 17

The boiling point of liquid argon is 87.3 K.What is the boiling point in Celsius degrees?

Accepted Answer

A)  189.1 °C 
B)  -185.9 °C 
C)  87.3 °C 
D)  360.5 °C 
E)  -210.7 °C 
A)  189.1 °C 
B)  -185.9 °C 
C)  87.3 °C 
D)  360.5 °C 
E)  -210.7 °C

Question 18

The distance between atoms is sometimes given in picometers,where 1 pm is equivalent to 1 × 10-12 m.If the distance between the layers of atoms in a particular compound is given as 328 pm,what is the distance in cm?

Accepted Answer

A)  3.28 × 10-6 cm 
B)  3.28 × 10-14 cm 
C)  3.28 × 10-12 cm 
D)  3.28 × 10-8 cm 
E)  3.28 × 10-10 cm 
A)  3.28 × 10-6 cm 
B)  3.28 × 10-14 cm 
C)  3.28 × 10-12 cm 
D)  3.28 × 10-8 cm 
E)  3.28 × 10-10 cm

Question 19

If a gallon (3.78 L)of latex paint can cover 365 ft2 of the surface of a wall,what is the average thickness of one coat of paint (in millimeters)? (12 in = 1 ft,2.54 cm = 1 in)

Accepted Answer

A)  1.11 × 10-1 mm 
B)  2.83 × 10-1 mm 
C)  4.64 × 10-1 mm 
D)  4.89 × 10-1 mm 
E)  3.40 mm 
A)  1.11 × 10-1 mm 
B)  2.83 × 10-1 mm 
C)  4.64 × 10-1 mm 
D)  4.89 × 10-1 mm 
E)  3.40 mm

Question 20

Using the rules of significant figures,calculate the following: (2.335 + 7.026)÷ 2.57 = _____

Accepted Answer

A)  3.642 
B)  3.6424 
C)  3.6 
D)  3.64 
E)  3.64241 
A)  3.642 
B)  3.6424 
C)  3.6 
D)  3.64 
E)  3.64241

Exam 2: Lets Review: The Tools of Quantitative Chemistry

Round 0.00274485 to 1 significant figure.

The volume of space occupied by a beryllium atom is 6.0 × 10-30 m3.What is this volume in units of nm3?

A graph of a certain set of data is shown to be linear with a trendline of y = 32.0x + 8.What is the sign and slope of the trendline obtained from this data?

The number of significant figures in 2.1948 × 10-9 nm is _____.

Which of the following is the smallest mass?

How many significant figures are there in the number 4.700?

How many significant figures are there in the value 0.0490 g/mL?

Express the result of the following calculation in scientific notation: 437 cm × 885 cm

The distance from Austin,Texas,to Lincoln,Nebraska,is 822 miles by car.Which of the following series of calculations will yield this distance in units of kilometers? (1 in = 2.54 cm (exact),1 mi = 5280 ft (exact),1 ft = 12 in (exact))

How many 500-mg aspirin tablets can be made from 50.0 kg of aspirin?

The melting point of a particular solid is 2863 K.This corresponds to

Silver chloride (AgCl)is relatively insoluble in water.At 25 °C,1.3 × 103 L of water is needed to dissolve 2.5 g of AgCl.What mass (in milligrams)of AgCl will dissolve in 1.0 L of water?

The average speed of oxygen molecules at 570°C is 1.49 × 105 cm/s.Which of the following calculations would convert this speed to units of miles per hour?

The density of a particular solid is 7.62 g/cm3 at 25°C.What is its density in kilograms per cubic meter (kg/m3)?

A piece of metal (mass = 17.268 g)is placed in 10.50 mL of chloroform (d = 1.498 g/mL)in a 25-mL graduated cylinder.The chloroform level increases to 15.46 mL.The best value for density of this metal from these data is

Express the volume 622.8 cm3 in liters.

The boiling point of liquid argon is 87.3 K.What is the boiling point in Celsius degrees?

The distance between atoms is sometimes given in picometers,where 1 pm is equivalent to 1 × 10-12 m.If the distance between the layers of atoms in a particular compound is given as 328 pm,what is the distance in cm?

If a gallon (3.78 L)of latex paint can cover 365 ft2 of the surface of a wall,what is the average thickness of one coat of paint (in millimeters)? (12 in = 1 ft,2.54 cm = 1 in)

Using the rules of significant figures,calculate the following: (2.335 + 7.026)÷ 2.57 = _____

Basic Concepts of Chemistry

Atoms, molecules, and Ions

Chemical Reactions

Stoichiometry: Quantitative Information About Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms

The Structure of Atoms and Periodic Trends

Bonding and Molecular Structure

Bonding and Molecular Structure Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

The Solid State

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Chemical Reactivity: Equilibria

Principles of Chemical Reactivity: the Chemistry of Acids and Bases

Principles of Chemical Reactivity: Other Aspects of Aqueous Equilibria

Principles of Chemical Reactivity: Entropy and Free Energy

Principles of Chemical Reactivity: Electron Transfer Reactions

Environmental Chemistry: Earths Environment, energy, and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Carbon: Not Just Another Element

Biochemistry

Nuclear Chemistry

Filters

The volume of space occupied by a beryllium atom is 6.0 × 10^-30 m³.What is this volume in units of nm³?

The number of significant figures in 2.1948 × 10^-9 nm is _____.

Silver chloride (AgCl)is relatively insoluble in water.At 25 °C,1.3 × 10³ L of water is needed to dissolve 2.5 g of AgCl.What mass (in milligrams)of AgCl will dissolve in 1.0 L of water?

The average speed of oxygen molecules at 570°C is 1.49 × 10⁵ cm/s.Which of the following calculations would convert this speed to units of miles per hour?

The density of a particular solid is 7.62 g/cm³ at 25°C.What is its density in kilograms per cubic meter (kg/m³)?

Express the volume 622.8 cm³ in liters.

The distance between atoms is sometimes given in picometers,where 1 pm is equivalent to 1 × 10^-12 m.If the distance between the layers of atoms in a particular compound is given as 328 pm,what is the distance in cm?

If a gallon (3.78 L)of latex paint can cover 365 ft² of the surface of a wall,what is the average thickness of one coat of paint (in millimeters)? (12 in = 1 ft,2.54 cm = 1 in)