Question 1

Consider the mercury barometer shown below.   What is the equivalent of pressure reading in torr?

Accepted Answer

A) 684 torr 
B) 0.900 torr 
C) 6.75 torr 
D) 46.6 torr 
E) 1444 torr 
A) 684 torr 
B) 0.900 torr 
C) 6.75 torr 
D) 46.6 torr 
E) 1444 torr A

Question 2

10.7 L of a gas at 1.75 atm are expanded to 20.0 L at a constant temperature.What is the new gas pressure?

Accepted Answer

A) 0.0306 atm 
B) 0.936 atm 
C) 1.07 atm 
D) 3.27 atm 
E) 375 atm 
A) 0.0306 atm 
B) 0.936 atm 
C) 1.07 atm 
D) 3.27 atm 
E) 375 atm B

Question 3

Which of the following statements is true?

Accepted Answer

A) The attractive forces among ideal gas molecules are known as kinetic molecular forces 
B) Ideal gas molecules behave as independent particles 
C) The movement of a given ideal gas molecule is influenced only by the molecules in the immediate vicinity of that molecule 
D) The attractive forces among ideal gas molecules are short-range forces 
E) The attractive forces among ideal gas molecules primarily depend upon the size of the particles 
A) The attractive forces among ideal gas molecules are known as kinetic molecular forces 
B) Ideal gas molecules behave as independent particles 
C) The movement of a given ideal gas molecule is influenced only by the molecules in the immediate vicinity of that molecule 
D) The attractive forces among ideal gas molecules are short-range forces 
E) The attractive forces among ideal gas molecules primarily depend upon the size of the particles B

Question 4

Which of the following correctly expresses Boyle's Law?

Accepted Answer

A) V ∝ 1/P 
B) V ∝ P 
C) V ∝ n 
D) V ∝ 1/T 
E) V ∝ T 
A) V ∝ 1/P 
B) V ∝ P 
C) V ∝ n 
D) V ∝ 1/T 
E) V ∝ T

Question 5

Convert 13.3 psi to kPa and torr.

Accepted Answer

A) 1.35 × 103 kPa; 1.01 × 104 torr 
B) 91.7 kPa; 688 torr 
C) 1.93 kPa; 0.257 torr 
D) 91.7 kPa; 0.257 torr 
E) 1.93 kPa; 688 torr 
A) 1.35 × 103 kPa; 1.01 × 104 torr 
B) 91.7 kPa; 688 torr 
C) 1.93 kPa; 0.257 torr 
D) 91.7 kPa; 0.257 torr 
E) 1.93 kPa; 688 torr

Question 6

Which of the following statements is true?

Accepted Answer

A) Gas particles often are attracted to one another and therefore behave as grouped particles. 
B) The volume occupied by particles of a gas typically accounts for about 10-25% of the container volume. 
C) Particles in a gas have very little space between them. 
D) Gas particles gradually decrease in total kinetic energy over time. 
E) Gases consist of molecular (or atomic) particles moving at any given instant in straight lines. 
A) Gas particles often are attracted to one another and therefore behave as grouped particles. 
B) The volume occupied by particles of a gas typically accounts for about 10-25% of the container volume. 
C) Particles in a gas have very little space between them. 
D) Gas particles gradually decrease in total kinetic energy over time. 
E) Gases consist of molecular (or atomic) particles moving at any given instant in straight lines.

Question 7

Which of the following correctly expresses Charles's Law?

Accepted Answer

A) V ∝ 1/P 
B) V ∝ n 
C) V ∝ 1/n 
D) V ∝ T 
E) V ∝ 1/T 
A) V ∝ 1/P 
B) V ∝ n 
C) V ∝ 1/n 
D) V ∝ T 
E) V ∝ 1/T

Question 8

A balloon is filled with a gas and has a volume of 1.79 L at 2.82 atm pressure.What will its volume be if the pressure is changed to 5.30 atm?

Accepted Answer

A) 3.36 L 
B) 1.05 L 
C) 0.952 L 
D) 0.297 L 
E) 26.8 L 
A) 3.36 L 
B) 1.05 L 
C) 0.952 L 
D) 0.297 L 
E) 26.8 L

Question 9

Consider the following image showing a sample of a trapped gas in a cylinder with a movable piston.   Which of the following statements is(are)illustrated by this image?
i.Gases may be compressed.
ii.Gases expand to fill their containers uniformly.
iii.All gases have low density.
iv.Gases may be mixed.
V.A confined gas exerts constant pressure on the walls of its container uniformly in all directions.

Accepted Answer

A) i only 
B) ii only 
C) iii only 
D) ii and iv 
E) i and ii 
A) i only 
B) ii only 
C) iii only 
D) ii and iv 
E) i and ii

Question 10

The pressure on 474 mL of a gas is changed from 726 mm Hg to 622 mm Hg.What is the volume at the new pressure?

Accepted Answer

A) 2.14 × 108 mL 
B) 553 mL 
C) 406 mL 
D) 0.00246 mL 
E) 0.00181 mL 
A) 2.14 × 108 mL 
B) 553 mL 
C) 406 mL 
D) 0.00246 mL 
E) 0.00181 mL

Question 11

20.0 L of a gas originally at 22 °C and 1.05 atm pressure are compressed to 10.0 L.The new temperature is 57 °C.What is the new pressure?

Accepted Answer

A) 2.35 atm 
B) 5.44 atm 
C) 0.469 atm 
D) 1.88 atm 
E) 0.587 atm 
A) 2.35 atm 
B) 5.44 atm 
C) 0.469 atm 
D) 1.88 atm 
E) 0.587 atm

Question 12

Convert 1.47 atm to psi and in.Hg.

Accepted Answer

A) 0.100 psi; 0.0491 in. Hg 
B) 1.12 × 103 psi; 149 in. Hg 
C) 149 psi; 1.12 × 103 in. Hg 
D) 1.49 × 105 psi; 1.12 × 103 in. Hg 
E) 21.6 psi; 44.0 in. Hg 
A) 0.100 psi; 0.0491 in. Hg 
B) 1.12 × 103 psi; 149 in. Hg 
C) 149 psi; 1.12 × 103 in. Hg 
D) 1.49 × 105 psi; 1.12 × 103 in. Hg 
E) 21.6 psi; 44.0 in. Hg

Question 13

The pressure of a gas is 817 torr at 55.0°C.The quantity of the gas is fixed and the volume remains constant as the pressure is adjusted to 6.00 × 102 torr.What is the resulting temperature of the gas?

Accepted Answer

A) -32 °C 
B) 40 °C 
C) 174 °C 
D) 241 °C 
E) 447 °C 
A) -32 °C 
B) 40 °C 
C) 174 °C 
D) 241 °C 
E) 447 °C

Question 14

A gas sample was originally in a 2.50 × 102 mL container at 25 °C.The gas was transferred to an evacuated 5.00 × 102 mL container,and the pressure was the same in both containers.What is the temperature of the gas in the larger container?

Accepted Answer

A) 596 °C 
B) 323 °C 
C) 50 °C 
D) 13 °C 
E) -124 °C 
A) 596 °C 
B) 323 °C 
C) 50 °C 
D) 13 °C 
E) -124 °C

Question 15

A gas occupies 4.71 liters at 62 °C and 795 torr.What volume will it occupy if it is cooled to 17 °C and compressed to 911 torr?

Accepted Answer

A) 3.56 L 
B) 6.23 L 
C) 1.13 L 
D) 4.75 L 
E) 4.67 L 
A) 3.56 L 
B) 6.23 L 
C) 1.13 L 
D) 4.75 L 
E) 4.67 L

Question 16

Which of the following statements is false?

Accepted Answer

A) Gas molecules collide with each other without loss of energy 
B) Gas molecules collide with the container walls without loss of energy 
C) The pressure of a gas at constant temperature in a sealed container will gradually decrease 
D) Because of the relationship between temperature and average molecular speed, the temperature of a gas would drop if energy were lost in collisions 
E) Friction does not slow down gas particles and cause them to stop moving 
A) Gas molecules collide with each other without loss of energy 
B) Gas molecules collide with the container walls without loss of energy 
C) The pressure of a gas at constant temperature in a sealed container will gradually decrease 
D) Because of the relationship between temperature and average molecular speed, the temperature of a gas would drop if energy were lost in collisions 
E) Friction does not slow down gas particles and cause them to stop moving

Question 17

Examine the barometer shown below.   Convert the pressure reading on the barometer to atm and psi.

Accepted Answer

A) 0.991 atm; 14.6 psi 
B) 0.991 atm; 3.90 × 102 psi 
C) 5.72 × 103 atm; 14.6 psi 
D) 5.72 × 103 atm; 3.90 × 102 psi 
E) 75.3 atm; 1.11 × 103 psi 
A) 0.991 atm; 14.6 psi 
B) 0.991 atm; 3.90 × 102 psi 
C) 5.72 × 103 atm; 14.6 psi 
D) 5.72 × 103 atm; 3.90 × 102 psi 
E) 75.3 atm; 1.11 × 103 psi

Question 18

Which of the following is the best approximation of the relative densities of air and water,when both are at room temperature?

Accepted Answer

A) The density of air is about 800 times greater than the density of water. 
B) The density of water is about 800 times greater than the density of air. 
C) The density of air is about 80,000 times greater than the density of water. 
D) The density of water is about 80,000 times greater than the density of air. 
E) The density of air is about 800,000 times greater than the density of water. 
A) The density of air is about 800 times greater than the density of water. 
B) The density of water is about 800 times greater than the density of air. 
C) The density of air is about 80,000 times greater than the density of water. 
D) The density of water is about 80,000 times greater than the density of air. 
E) The density of air is about 800,000 times greater than the density of water.

Question 19

The STP volume of an ideal gas is 2.06 m3.Calculate the volume of the sample at 1.75 atm and 27 °C.

Accepted Answer

A) 0.773 m3 
B) 1.07 m3 
C) 1.29 m3 
D) 3.28 m3 
E) 3.96 m3 
A) 0.773 m3 
B) 1.07 m3 
C) 1.29 m3 
D) 3.28 m3 
E) 3.96 m3

Question 20

A fixed quantity of a gas is maintained at a constant temperature.The gas has a volume of 0.847 m3 at 735 torr.What is the pressure of the gas when the volume is changed to 0.905 m3?

Accepted Answer

A) 0.00145 torr 
B) 0.00127 torr 
C) 781 torr 
D) 563 torr 
E) 688 torr 
A) 0.00145 torr 
B) 0.00127 torr 
C) 781 torr 
D) 563 torr 
E) 688 torr

Consider the mercury barometer shown below. What is the equivalent of pressure reading in torr?

10.7 L of a gas at 1.75 atm are expanded to 20.0 L at a constant temperature.What is the new gas pressure?

Which of the following statements is true?

Which of the following correctly expresses Boyle's Law?

Convert 13.3 psi to kPa and torr.

Which of the following statements is true?

Which of the following correctly expresses Charles's Law?

A balloon is filled with a gas and has a volume of 1.79 L at 2.82 atm pressure.What will its volume be if the pressure is changed to 5.30 atm?

The pressure on 474 mL of a gas is changed from 726 mm Hg to 622 mm Hg.What is the volume at the new pressure?

20.0 L of a gas originally at 22 °C and 1.05 atm pressure are compressed to 10.0 L.The new temperature is 57 °C.What is the new pressure?

Convert 1.47 atm to psi and in.Hg.

The pressure of a gas is 817 torr at 55.0°C.The quantity of the gas is fixed and the volume remains constant as the pressure is adjusted to 6.00 × 10² torr.What is the resulting temperature of the gas?

A gas sample was originally in a 2.50 × 10² mL container at 25 °C.The gas was transferred to an evacuated 5.00 × 10² mL container,and the pressure was the same in both containers.What is the temperature of the gas in the larger container?

A gas occupies 4.71 liters at 62 °C and 795 torr.What volume will it occupy if it is cooled to 17 °C and compressed to 911 torr?

Which of the following statements is false?

Examine the barometer shown below. Convert the pressure reading on the barometer to atm and psi.

Which of the following is the best approximation of the relative densities of air and water,when both are at room temperature?

The STP volume of an ideal gas is 2.06 m³.Calculate the volume of the sample at 1.75 atm and 27 °C.

A fixed quantity of a gas is maintained at a constant temperature.The gas has a volume of 0.847 m³ at 735 torr.What is the pressure of the gas when the volume is changed to 0.905 m³?

Matter and Energy

Measurement and Chemical Calculations

Atomic Theory: The Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: The Quantum Model of the Atom

Chemical Bonding

Structure and Shape

The Ideal Gas Law and Its Applications

Gases, Liquids, and Solids

Solutions

Acidbase Proton Transferreactions

Chemical Equilibrium

Oxidationreduction Electron Transferreactions

Nuclear Chemistry

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Exam 4: Introduction to Gases

Consider the mercury barometer shown below. What is the equivalent of pressure reading in torr?

10.7 L of a gas at 1.75 atm are expanded to 20.0 L at a constant temperature.What is the new gas pressure?

Which of the following statements is true?

Which of the following correctly expresses Boyle's Law?

Convert 13.3 psi to kPa and torr.

Which of the following statements is true?

Which of the following correctly expresses Charles's Law?

A balloon is filled with a gas and has a volume of 1.79 L at 2.82 atm pressure.What will its volume be if the pressure is changed to 5.30 atm?

The pressure on 474 mL of a gas is changed from 726 mm Hg to 622 mm Hg.What is the volume at the new pressure?

20.0 L of a gas originally at 22 °C and 1.05 atm pressure are compressed to 10.0 L.The new temperature is 57 °C.What is the new pressure?

Convert 1.47 atm to psi and in.Hg.

The pressure of a gas is 817 torr at 55.0°C.The quantity of the gas is fixed and the volume remains constant as the pressure is adjusted to 6.00 × 102 torr.What is the resulting temperature of the gas?

A gas sample was originally in a 2.50 × 102 mL container at 25 °C.The gas was transferred to an evacuated 5.00 × 102 mL container,and the pressure was the same in both containers.What is the temperature of the gas in the larger container?

A gas occupies 4.71 liters at 62 °C and 795 torr.What volume will it occupy if it is cooled to 17 °C and compressed to 911 torr?

Which of the following statements is false?

Examine the barometer shown below. Convert the pressure reading on the barometer to atm and psi.

Which of the following is the best approximation of the relative densities of air and water,when both are at room temperature?

The STP volume of an ideal gas is 2.06 m3.Calculate the volume of the sample at 1.75 atm and 27 °C.

A fixed quantity of a gas is maintained at a constant temperature.The gas has a volume of 0.847 m3 at 735 torr.What is the pressure of the gas when the volume is changed to 0.905 m3?

Matter and Energy

Measurement and Chemical Calculations

Atomic Theory: The Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: The Quantum Model of the Atom

Chemical Bonding

Structure and Shape

The Ideal Gas Law and Its Applications

Gases, Liquids, and Solids

Solutions

Acidbase Proton Transferreactions

Chemical Equilibrium

Oxidationreduction Electron Transferreactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

The pressure of a gas is 817 torr at 55.0°C.The quantity of the gas is fixed and the volume remains constant as the pressure is adjusted to 6.00 × 10² torr.What is the resulting temperature of the gas?

A gas sample was originally in a 2.50 × 10² mL container at 25 °C.The gas was transferred to an evacuated 5.00 × 10² mL container,and the pressure was the same in both containers.What is the temperature of the gas in the larger container?

The STP volume of an ideal gas is 2.06 m³.Calculate the volume of the sample at 1.75 atm and 27 °C.

A fixed quantity of a gas is maintained at a constant temperature.The gas has a volume of 0.847 m³ at 735 torr.What is the pressure of the gas when the volume is changed to 0.905 m³?