Question 1

One atmosphere of pressure is equivalent to 760 psi.

Accepted Answer

A) True 
 B)False

Question 2

If each of the following gas samples have the same temperature and pressure,which sample has the greatest volume?

Accepted Answer

A) 1 gram of O2 
B) 1 gram of Ar 
C) 1 gram of H2 
D) all have the same volume 
E) not enough information 
A) 1 gram of O2 
B) 1 gram of Ar 
C) 1 gram of H2 
D) all have the same volume 
E) not enough information

Question 3

Which of the following is NOT part of the Kinetic Molecular Theory?

Accepted Answer

A) Gas particles do not repel each other. 
B) There is a large distance between gas particles as compared to their relative size. 
C) The size of the actual gas particles is small compared to the volume of the whole gas. 
D) The average energy of the particles is dependent on the molecular mass of the particle. 
E) All of the above statements are part of the Kinetic Molecular Theory. 
A) Gas particles do not repel each other. 
B) There is a large distance between gas particles as compared to their relative size. 
C) The size of the actual gas particles is small compared to the volume of the whole gas. 
D) The average energy of the particles is dependent on the molecular mass of the particle. 
E) All of the above statements are part of the Kinetic Molecular Theory.

Question 4

Vapor pressure of water increases with increasing temperature because the higher temperature causes more water molecules to evaporate.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following statements about pressure is FALSE?

Accepted Answer

A) Pressure is caused by gas molecules colliding with surfaces. 
B) The atmosphere has a pressure as the components of air collide with surfaces. 
C) After creating a pressure difference,the atmospheric pressure can push liquid up a straw. 
D) A deep well dug in the ground must have the pump located at the bottom of well in order to have the water come to the surface. 
E) All of the above statements are true. 
A) Pressure is caused by gas molecules colliding with surfaces. 
B) The atmosphere has a pressure as the components of air collide with surfaces. 
C) After creating a pressure difference,the atmospheric pressure can push liquid up a straw. 
D) A deep well dug in the ground must have the pump located at the bottom of well in order to have the water come to the surface. 
E) All of the above statements are true.

Question 6

Ammonia gas decomposes according to the equation: 
2NH3(g)→ N2(g)+ 3H2(g)
If 15.0 L of nitrogen is formed at STP,how many liters of hydrogen will be produced (also measured at STP)?

Accepted Answer

A) 15.0 L 
B) 30.0 L 
C) 45.0 L 
D) 90.0 L 
E) not enough information 
A) 15.0 L 
B) 30.0 L 
C) 45.0 L 
D) 90.0 L 
E) not enough information

Question 7

For an ideal gas,which of the following pairs of variables are inversely proportional to each other (if all other factors remain constant)?

Accepted Answer

A) P,V 
B) P,T 
C) V,T 
D) n,P 
E) none of the above 
A) P,V 
B) P,T 
C) V,T 
D) n,P 
E) none of the above

Question 8

What is the third most abundant component of dry air?

Accepted Answer

A) carbon dioxide 
B) oxygen 
C) nitrogen 
D) argon 
E) smog 
A) carbon dioxide 
B) oxygen 
C) nitrogen 
D) argon 
E) smog

Question 9

If the volume of a gas container at 32.0°C changes from 1.55 L to 755 mL,what will the final temperature be?

Accepted Answer

A) 149°C 
B) 353°C 
C) 273°C 
D) -124°C 
E) none of the above 
A) 149°C 
B) 353°C 
C) 273°C 
D) -124°C 
E) none of the above

Question 10

How many liters of O2 (g)are needed to react completely with 56.0 L of CH4 (g)at STP to produce CO2 (g)and H2O (g)? 
Given: CH4 (g)+ 2O2 (g)→ CO2 (g)+ H2O (g)

Accepted Answer

A) 28.0 L 
B) 56.0 L 
C) 84.0 L 
D) 112.L 
E) none of the above 
A) 28.0 L 
B) 56.0 L 
C) 84.0 L 
D) 112.L 
E) none of the above

Question 11

A 5.00 liter balloon of gas at 25°C is cooled to 0°C.What is the new volume (liters)of the balloon?

Accepted Answer

A) 0 liters 
B) 22.4 liters 
C) 5.46 liters 
D) 4.58 liters 
E) none of the above 
A) 0 liters 
B) 22.4 liters 
C) 5.46 liters 
D) 4.58 liters 
E) none of the above

Question 12

Which set of conditions reflect STP?

Accepted Answer

A) 298 K,1 atm 
B) 25°C,14.7 psi 
C) 373 K,760 torr 
D) 273 K,1 Pa 
E) 273 K,760 mm Hg 
A) 298 K,1 atm 
B) 25°C,14.7 psi 
C) 373 K,760 torr 
D) 273 K,1 Pa 
E) 273 K,760 mm Hg

Question 13

Pressure depends on how many gas particles are in a container.

Accepted Answer

A) True 
 B)False

Question 14

The molar volume of any gas at conditions of standard temperature and pressure is 22.4 liters.

Accepted Answer

A) True 
 B)False

Question 15

When must temperature values in gas law calculations be expressed in kelvin units?

Accepted Answer

A) only for Charles's law 
B) only for the Ideal Gas law 
C) only for the Combined Gas law 
D) never 
E) always 
A) only for Charles's law 
B) only for the Ideal Gas law 
C) only for the Combined Gas law 
D) never 
E) always

Question 16

A sample of 0.255 mole of gas has a volume of 748 mL at 28°C.Calculate the pressure of this gas.(R= 0.0821 L ∙ atm / mol ∙ K)

Accepted Answer

A) 8.42 atm 
B) 0.784 atm 
C) 0.00842 atm 
D) 7.84 × 10-4 atm 
E) none of the above 
A) 8.42 atm 
B) 0.784 atm 
C) 0.00842 atm 
D) 7.84 × 10-4 atm 
E) none of the above

Question 17

What is the final volume (L)of a 10.0 L system that has the pressure quartered?

Accepted Answer

A) 0.250 
B) 17.1 
C) 2.50 
D) 40.0 
E) none of the above 
A) 0.250 
B) 17.1 
C) 2.50 
D) 40.0 
E) none of the above

Question 18

Charles's Law is expressed as:

Accepted Answer

A) V is proportional to   
B) P is proportional to V 
C) V is proportional to   
D) V is proportional to T 
E) none of the above 
A) V is proportional to   
B) P is proportional to V 
C) V is proportional to   
D) V is proportional to T 
E) none of the above

Question 19

The main component of the air we breathe is oxygen gas.

Accepted Answer

A) True 
 B)False

Question 20

The conversion factor for pressure is 1 mm Hg = 1 atm.

Accepted Answer

A) True 
 B)False

One atmosphere of pressure is equivalent to 760 psi.

If each of the following gas samples have the same temperature and pressure,which sample has the greatest volume?

Which of the following is NOT part of the Kinetic Molecular Theory?

Vapor pressure of water increases with increasing temperature because the higher temperature causes more water molecules to evaporate.

Which of the following statements about pressure is FALSE?

Ammonia gas decomposes according to the equation: 2NH₃(g)→ N₂(g)+ 3H₂(g) If 15.0 L of nitrogen is formed at STP,how many liters of hydrogen will be produced (also measured at STP)?

For an ideal gas,which of the following pairs of variables are inversely proportional to each other (if all other factors remain constant)?

What is the third most abundant component of dry air?

If the volume of a gas container at 32.0°C changes from 1.55 L to 755 mL,what will the final temperature be?

How many liters of O₂ (g)are needed to react completely with 56.0 L of CH₄ (g)at STP to produce CO₂ (g)and H₂O (g)? Given: CH₄ (g)+ 2O₂ (g)→ CO₂ (g)+ H₂O (g)

A 5.00 liter balloon of gas at 25°C is cooled to 0°C.What is the new volume (liters)of the balloon?

Which set of conditions reflect STP?

Pressure depends on how many gas particles are in a container.

The molar volume of any gas at conditions of standard temperature and pressure is 22.4 liters.

When must temperature values in gas law calculations be expressed in kelvin units?

A sample of 0.255 mole of gas has a volume of 748 mL at 28°C.Calculate the pressure of this gas.(R= 0.0821 L ∙ atm / mol ∙ K)

What is the final volume (L)of a 10.0 L system that has the pressure quartered?

Charles's Law is expressed as:

The main component of the air we breathe is oxygen gas.

The conversion factor for pressure is 1 mm Hg = 1 atm.

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Exam 11: Gases

One atmosphere of pressure is equivalent to 760 psi.

If each of the following gas samples have the same temperature and pressure,which sample has the greatest volume?

Which of the following is NOT part of the Kinetic Molecular Theory?

Vapor pressure of water increases with increasing temperature because the higher temperature causes more water molecules to evaporate.

Which of the following statements about pressure is FALSE?

Ammonia gas decomposes according to the equation: 2NH3(g)→ N2(g)+ 3H2(g) If 15.0 L of nitrogen is formed at STP,how many liters of hydrogen will be produced (also measured at STP)?

For an ideal gas,which of the following pairs of variables are inversely proportional to each other (if all other factors remain constant)?

What is the third most abundant component of dry air?

If the volume of a gas container at 32.0°C changes from 1.55 L to 755 mL,what will the final temperature be?

How many liters of O2 (g)are needed to react completely with 56.0 L of CH4 (g)at STP to produce CO2 (g)and H2O (g)? Given: CH4 (g)+ 2O2 (g)→ CO2 (g)+ H2O (g)

A 5.00 liter balloon of gas at 25°C is cooled to 0°C.What is the new volume (liters)of the balloon?

Which set of conditions reflect STP?

Pressure depends on how many gas particles are in a container.

The molar volume of any gas at conditions of standard temperature and pressure is 22.4 liters.

When must temperature values in gas law calculations be expressed in kelvin units?

A sample of 0.255 mole of gas has a volume of 748 mL at 28°C.Calculate the pressure of this gas.(R= 0.0821 L ∙ atm / mol ∙ K)

What is the final volume (L)of a 10.0 L system that has the pressure quartered?

Charles's Law is expressed as:

The main component of the air we breathe is oxygen gas.

The conversion factor for pressure is 1 mm Hg = 1 atm.

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Liquids, solids, and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Ammonia gas decomposes according to the equation: 2NH₃(g)→ N₂(g)+ 3H₂(g) If 15.0 L of nitrogen is formed at STP,how many liters of hydrogen will be produced (also measured at STP)?

How many liters of O₂ (g)are needed to react completely with 56.0 L of CH₄ (g)at STP to produce CO₂ (g)and H₂O (g)? Given: CH₄ (g)+ 2O₂ (g)→ CO₂ (g)+ H₂O (g)