Question 1

Standard temperature and pressure (STP), in the context of gases, refers to __________.

Accepted Answer

A) 298.15 K and 1 atm 
B) 273.15 K and 1 atm 
C) 298.15 K and 1 torr 
D) 273.15 K and 1 pascal 
E) 273.15 K and 1 torr 
A) 298.15 K and 1 atm 
B) 273.15 K and 1 atm 
C) 298.15 K and 1 torr 
D) 273.15 K and 1 pascal 
E) 273.15 K and 1 torr

Question 2

"Isothermal" means __________.

Accepted Answer

A) at constant pressure 
B) at constant temperature 
C) at variable temperature and pressure conditions 
D) at ideal temperature and pressure conditions 
E) that   = 0 
A) at constant pressure 
B) at constant temperature 
C) at variable temperature and pressure conditions 
D) at ideal temperature and pressure conditions 
E) that   = 0

Question 3

Ammonium nitrite undergoes thermal decomposition to produce only gases: NH4NO2 (s)→ N2 (g)+ 2H2O (g)
What volume (L)of gas is produced by the decomposition of 35.0 g of NH4NO2 (s)at 525°C and 1.5 atm?

Accepted Answer

A) 47 
B) 160 
C) 15 
D) 72 
E) 24 
A) 47 
B) 160 
C) 15 
D) 72 
E) 24

Question 4

According to kinetic-molecular theory, if the temperature of a gas is raised from 100°C to 200°C, the average kinetic energy of the gas will __________.

Accepted Answer

A) double 
B) increase by a factor of 1.27 
C) increase by a factor of 100 
D) decrease by half 
E) decrease by a factor of 100 
A) double 
B) increase by a factor of 1.27 
C) increase by a factor of 100 
D) decrease by half 
E) decrease by a factor of 100

Question 5

According to the kinetic-molecular theory, molecules of different gases at the same temperature always have the same average kinetic energy.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following statements about gases is false?

Accepted Answer

A) Gases are highly compressible. 
B) Distances between molecules of gas are very large compared to bond distances within molecules. 
C) Non-reacting gas mixtures are homogeneous. 
D) Gases expand spontaneously to fill the container they are placed in. 
E) All gases are colorless and odorless at room temperature. 
A) Gases are highly compressible. 
B) Distances between molecules of gas are very large compared to bond distances within molecules. 
C) Non-reacting gas mixtures are homogeneous. 
D) Gases expand spontaneously to fill the container they are placed in. 
E) All gases are colorless and odorless at room temperature.

Question 7

The molecular weight of a gas that has a density of 6.70 g/L at STP is __________ g/mol.

Accepted Answer

A) 4.96 × 102 
B) 1.50 × 102 
C) 7.30 × 101 
D) 3.35 
E) 2.98 × 10-1 
A) 4.96 × 102 
B) 1.50 × 102 
C) 7.30 × 101 
D) 3.35 
E) 2.98 × 10-1

Question 8

A sample of oxygen gas was found to effuse at a rate equal to two times that of an unknown gas. The molecular weight of the unknown gas is __________ g/mol.

Accepted Answer

A) 64 
B) 128 
C) 8 
D) 16 
E) 8.0 
A) 64 
B) 128 
C) 8 
D) 16 
E) 8.0

Question 9

Removal of __________ from the natural gas both purifies the natural gas and serves as an alternative method of production of an industrially important chemical element.

Accepted Answer

A) CO2 
B) H2S 
C) NH3 
D) As2O3 
E) He 
A) CO2 
B) H2S 
C) NH3 
D) As2O3 
E) He

Question 10

The thermal decomposition of potassium chlorate can be used to produce oxygen in the laboratory. 2KClO3 (s)→ 2KCl (s)+ 3O2 (g)
What volume (L)of O2 gas at 25°C and 1.00 atm pressure is produced by the decomposition of 7.5 g of KClO3 (s)?

Accepted Answer

A) 4.5 
B) 7.5 
C) 2.0 
D) 3.7 
E) 11 
A) 4.5 
B) 7.5 
C) 2.0 
D) 3.7 
E) 11

Question 11

Abnormally high blood pressure is called __________.

Accepted Answer

The answer of Abnormally high blood pressure is called __________....

Question 12

CO (5.00 g)and CO2 (5.00 g)were placed in a 750.0 mL container at 50.0°C. The partial pressure of CO2 in the container was __________ atm.

Accepted Answer

A) 4.02 
B) 10.3 
C) 1.60 
D) 0.292 
E) 6.31 
A) 4.02 
B) 10.3 
C) 1.60 
D) 0.292 
E) 6.31

Standard temperature and pressure (STP), in the context of gases, refers to __________.

"Isothermal" means __________.

Ammonium nitrite undergoes thermal decomposition to produce only gases: NH₄NO₂ (s)→ N₂ (g)+ 2H₂O (g) What volume (L)of gas is produced by the decomposition of 35.0 g of NH₄NO₂ (s)at 525°C and 1.5 atm?

According to kinetic-molecular theory, if the temperature of a gas is raised from 100°C to 200°C, the average kinetic energy of the gas will __________.

According to the kinetic-molecular theory, molecules of different gases at the same temperature always have the same average kinetic energy.

Which of the following statements about gases is false?

The molecular weight of a gas that has a density of 6.70 g/L at STP is __________ g/mol.

A sample of oxygen gas was found to effuse at a rate equal to two times that of an unknown gas. The molecular weight of the unknown gas is __________ g/mol.

Removal of __________ from the natural gas both purifies the natural gas and serves as an alternative method of production of an industrially important chemical element.

The thermal decomposition of potassium chlorate can be used to produce oxygen in the laboratory. 2KClO₃ (s)→ 2KCl (s)+ 3O₂ (g) What volume (L)of O₂ gas at 25°C and 1.00 atm pressure is produced by the decomposition of 7.5 g of KClO₃ (s)?

Abnormally high blood pressure is called __________.

CO (5.00 g)and CO₂ (5.00 g)were placed in a 750.0 mL container at 50.0°C. The partial pressure of CO₂ in the container was __________ atm.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

Exam 10: Gases

Standard temperature and pressure (STP), in the context of gases, refers to __________.

"Isothermal" means __________.

Ammonium nitrite undergoes thermal decomposition to produce only gases: NH4NO2 (s)→ N2 (g)+ 2H2O (g) What volume (L)of gas is produced by the decomposition of 35.0 g of NH4NO2 (s)at 525°C and 1.5 atm?

According to kinetic-molecular theory, if the temperature of a gas is raised from 100°C to 200°C, the average kinetic energy of the gas will __________.

According to the kinetic-molecular theory, molecules of different gases at the same temperature always have the same average kinetic energy.

Which of the following statements about gases is false?

The molecular weight of a gas that has a density of 6.70 g/L at STP is __________ g/mol.

A sample of oxygen gas was found to effuse at a rate equal to two times that of an unknown gas. The molecular weight of the unknown gas is __________ g/mol.

Removal of __________ from the natural gas both purifies the natural gas and serves as an alternative method of production of an industrially important chemical element.

The thermal decomposition of potassium chlorate can be used to produce oxygen in the laboratory. 2KClO3 (s)→ 2KCl (s)+ 3O2 (g) What volume (L)of O2 gas at 25°C and 1.00 atm pressure is produced by the decomposition of 7.5 g of KClO3 (s)?

Abnormally high blood pressure is called __________.

CO (5.00 g)and CO2 (5.00 g)were placed in a 750.0 mL container at 50.0°C. The partial pressure of CO2 in the container was __________ atm.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

Ammonium nitrite undergoes thermal decomposition to produce only gases: NH₄NO₂ (s)→ N₂ (g)+ 2H₂O (g) What volume (L)of gas is produced by the decomposition of 35.0 g of NH₄NO₂ (s)at 525°C and 1.5 atm?

The thermal decomposition of potassium chlorate can be used to produce oxygen in the laboratory. 2KClO₃ (s)→ 2KCl (s)+ 3O₂ (g) What volume (L)of O₂ gas at 25°C and 1.00 atm pressure is produced by the decomposition of 7.5 g of KClO₃ (s)?

CO (5.00 g)and CO₂ (5.00 g)were placed in a 750.0 mL container at 50.0°C. The partial pressure of CO₂ in the container was __________ atm.