Question 1

The pressure of the gas in a compressed gas tank is 862 kPa when the gas is at 35 °C.To what will the pressure change when the temperature drops to 7 °C?

Accepted Answer

A) 0.00128 kPa 
B) 4.31 * 103 kPa 
C) 172 kPa 
D) 784 kPa 
E) 948 kPa 
A) 0.00128 kPa 
B) 4.31 * 103 kPa 
C) 172 kPa 
D) 784 kPa 
E) 948 kPa A

Question 2

Which of the following correctly expresses Boyle's Law?

Accepted Answer

A) V $\infty$1/P 
B) V $\infty$ P 
C) V $\infty$ n 
D) V $\infty$ 1/T 
E) V $\infty$ T 
A) V $\infty$1/P 
B) V $\infty$ P 
C) V $\infty$ n 
D) V $\infty$ 1/T 
E) V $\infty$ T A

Question 3

A plastic glove when attached to a flask gives the system a flexible volume.See the illustration below.   From a starting point of 257 mL at 22 °C,to what volume will the system change if the temperature rises to 137 °C due to the heating by the laboratory burner?

Accepted Answer

A) 1.60 * 103 mL 
B) 41.3 mL 
C) 54.6 mL 
D) 357 mL 
E) 512 mL 
A) 1.60 * 103 mL 
B) 41.3 mL 
C) 54.6 mL 
D) 357 mL 
E) 512 mL D

Question 4

A canister holds a gas at 16.3 psi when the temperature is -15 °C.What will the pressure be when the temperature is increased to 20.°C?

Accepted Answer

A) -12.2 psi 
B) -21.7 psi 
C) 21.7 psi 
D) 14.4 psi 
E) 18.5 psi 
A) -12.2 psi 
B) -21.7 psi 
C) 21.7 psi 
D) 14.4 psi 
E) 18.5 psi

Question 5

A gas sample is originally at 93.9 kPa and 27 °C with a volume of 1.17 m3.What will be the resulting temperature if the pressure is adjusted to 117 kPa and the volume is reduced to 0.730 m3?

Accepted Answer

A) 326 °C 
B) 113 °C 
C) 21 °C 
D) -123 °C 
E) -40 °C 
A) 326 °C 
B) 113 °C 
C) 21 °C 
D) -123 °C 
E) -40 °C

Question 6

Which of the following statements is false?

Accepted Answer

A) Particle motion explains why gases fill their containers 
B) When an individual particle in a gaseous sample strikes a container wall,it exerts a force at the point of collision 
C) Gases consist of molecular particles moving at any given instant in straight lines 
D) Gas pressures depend on the depth to which a container is filled with a gas 
E) Gas pressures are independent of external factors such as gravitational forces 
A) Particle motion explains why gases fill their containers 
B) When an individual particle in a gaseous sample strikes a container wall,it exerts a force at the point of collision 
C) Gases consist of molecular particles moving at any given instant in straight lines 
D) Gas pressures depend on the depth to which a container is filled with a gas 
E) Gas pressures are independent of external factors such as gravitational forces

Question 7

Which of the following statements are true?
(i)One standard atmosphere of pressure is defined as 760 mm Hg.
(ii)To two significant figures,one atmosphere and one bar are equal.
(iii)Gauge pressure is the pressure above atmospheric pressure.

Accepted Answer

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

Question 8

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 9

Consider the following graph.The data for the graph was obtained at constant temperature.   Which of the following correctly describes the relationship shown on the graph?
(i)V $\infty$ P
(ii)V $\infty$ 1/P
(iii)V = kP
(iv)V = k(1/P)

Accepted Answer

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

Question 10

A gas has a volume of 3.77 m3 at 271 kPa.What will be its volume if the pressure is changed to 535 kPa?

Accepted Answer

A) 0.134 m3 
B) 0.524 m3 
C) 1.91 m3 
D) 7.44 m3 
E) 5.47*105 m3 
A) 0.134 m3 
B) 0.524 m3 
C) 1.91 m3 
D) 7.44 m3 
E) 5.47*105 m3

Question 11

Which of the following is correct?

Accepted Answer

A) 5.99 * 108 in.Hg = 1.77 * 105 Pa 
B) 25.0 psi = 172 kPa 
C) 5.64 *105 atm = 742 mm Hg 
D) 75.0 cm Hg = 75.0 torr 
E) 153 kPa = 1.55 * 104 atm 
A) 5.99 * 108 in.Hg = 1.77 * 105 Pa 
B) 25.0 psi = 172 kPa 
C) 5.64 *105 atm = 742 mm Hg 
D) 75.0 cm Hg = 75.0 torr 
E) 153 kPa = 1.55 * 104 atm

Question 12

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 13

Which of the following statements is true?

Accepted Answer

A) The actual volume of ideal gas molecules is negligible compared to the space they occupy 
B) In an ideal gas,the volume of the molecules is typically as low as 10% of the total container volume 
C) The distances between ideal gas molecules are usually about the same as the diameter of the molecules 
D) Given that there is no chemical reaction between two gases,the ability to mix the gases in a rigid container of fixed volume depends on the external atmospheric pressure 
E) Ideal gas molecules usually touch one another in a small container with low pressure and high temperature 
A) The actual volume of ideal gas molecules is negligible compared to the space they occupy 
B) In an ideal gas,the volume of the molecules is typically as low as 10% of the total container volume 
C) The distances between ideal gas molecules are usually about the same as the diameter of the molecules 
D) Given that there is no chemical reaction between two gases,the ability to mix the gases in a rigid container of fixed volume depends on the external atmospheric pressure 
E) Ideal gas molecules usually touch one another in a small container with low pressure and high temperature

Question 14

A gas storage tank holds a gas at 5.73 atm pressure at 22 °C.What will the pressure of the gas be when the temperature is lowered to 0 °C?

Accepted Answer

A) 5.30 atm 
B) 6.19 atm 
C) 0.189 atm 
D) 0 atm 
E) The temperature of a gas at 0 °C is undefined 
A) 5.30 atm 
B) 6.19 atm 
C) 0.189 atm 
D) 0 atm 
E) The temperature of a gas at 0 °C is undefined

Question 15

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 16

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

Question 17

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 18

Consider the open-end manometer shown below.   When the pressure of the atmosphere is 754 mmHg,what is the pressure of the gas sample?

Accepted Answer

A) 225 mm Hg 
B) 754 mm Hg 
C) 499 mm Hg 
D) 1009 mm Hg 
A) 225 mm Hg 
B) 754 mm Hg 
C) 499 mm Hg 
D) 1009 mm Hg

Question 19

Which of the following correctly expresses Charles's Law?

Accepted Answer

A) V $\infty$1/P 
B) V $\infty$ n 
C) V $\infty$ 1/n 
D) V $\infty$ T 
E) V $\infty$ 1/T 
A) V $\infty$1/P 
B) V $\infty$ n 
C) V $\infty$ 1/n 
D) V $\infty$ T 
E) V $\infty$ 1/T

Question 20

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

The pressure of the gas in a compressed gas tank is 862 kPa when the gas is at 35 °C.To what will the pressure change when the temperature drops to 7 °C?

Which of the following correctly expresses Boyle's Law?

A plastic glove when attached to a flask gives the system a flexible volume.See the illustration below. From a starting point of 257 mL at 22 °C,to what volume will the system change if the temperature rises to 137 °C due to the heating by the laboratory burner?

A canister holds a gas at 16.3 psi when the temperature is -15 °C.What will the pressure be when the temperature is increased to 20.°C?

A gas sample is originally at 93.9 kPa and 27 °C with a volume of 1.17 m³.What will be the resulting temperature if the pressure is adjusted to 117 kPa and the volume is reduced to 0.730 m³?

Which of the following statements is false?

Which of the following statements are true? (i)One standard atmosphere of pressure is defined as 760 mm Hg. (ii)To two significant figures,one atmosphere and one bar are equal. (iii)Gauge pressure is the pressure above atmospheric pressure.

A gas has a volume of 3.77 m³ at 271 kPa.What will be its volume if the pressure is changed to 535 kPa?

Which of the following is correct?

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?

Which of the following statements is true?

A gas storage tank holds a gas at 5.73 atm pressure at 22 °C.What will the pressure of the gas be when the temperature is lowered to 0 °C?

Which of the following statements is false?

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?

Convert 1.47 atm to psi and in.Hg.

Consider the open-end manometer shown below. When the pressure of the atmosphere is 754 mmHg,what is the pressure of the gas sample?

Which of the following correctly expresses Charles's Law?

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

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Exam 4: Introduction to Gases

The pressure of the gas in a compressed gas tank is 862 kPa when the gas is at 35 °C.To what will the pressure change when the temperature drops to 7 °C?

Which of the following correctly expresses Boyle's Law?

A plastic glove when attached to a flask gives the system a flexible volume.See the illustration below. From a starting point of 257 mL at 22 °C,to what volume will the system change if the temperature rises to 137 °C due to the heating by the laboratory burner?

A canister holds a gas at 16.3 psi when the temperature is -15 °C.What will the pressure be when the temperature is increased to 20.°C?

A gas sample is originally at 93.9 kPa and 27 °C with a volume of 1.17 m3.What will be the resulting temperature if the pressure is adjusted to 117 kPa and the volume is reduced to 0.730 m3?

Which of the following statements is false?

Which of the following statements are true? (i)One standard atmosphere of pressure is defined as 760 mm Hg. (ii)To two significant figures,one atmosphere and one bar are equal. (iii)Gauge pressure is the pressure above atmospheric pressure.

Consider the following graph.The data for the graph was obtained at constant temperature. Which of the following correctly describes the relationship shown on the graph? (i)V ∞\infty∞ P (ii)V ∞\infty∞ 1/P (iii)V = kP (iv)V = k(1/P)

A gas has a volume of 3.77 m3 at 271 kPa.What will be its volume if the pressure is changed to 535 kPa?

Which of the following is correct?

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?

Which of the following statements is true?

A gas storage tank holds a gas at 5.73 atm pressure at 22 °C.What will the pressure of the gas be when the temperature is lowered to 0 °C?

Which of the following statements is false?

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?

Convert 1.47 atm to psi and in.Hg.

Consider the open-end manometer shown below. When the pressure of the atmosphere is 754 mmHg,what is the pressure of the gas sample?

Which of the following correctly expresses Charles's Law?

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

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

Acid-Base Proton-Transferreactions

Chemical Equilibrium

Oxidation-Reduction Redoxreactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

A gas sample is originally at 93.9 kPa and 27 °C with a volume of 1.17 m³.What will be the resulting temperature if the pressure is adjusted to 117 kPa and the volume is reduced to 0.730 m³?

A gas has a volume of 3.77 m³ at 271 kPa.What will be its volume if the pressure is changed to 535 kPa?

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?