Question 1

Which one of the following gases would deviate the least from ideal gas behavior?

Accepted Answer

A) Ne 
B) CH3Cl 
C) Kr 
D) CO2 
E) F2 
A) Ne 
B) CH3Cl 
C) Kr 
D) CO2 
E) F2

Question 2

A tank containing both HF and HBr gases developed a leak. The ratio of the rate of effusion of HF to the rate of effusion of HBr is ________.

Accepted Answer

A) 4.04 
B) 0.247 
C) 2.01 
D) 0.497 
E) 16.3 
A) 4.04 
B) 0.247 
C) 2.01 
D) 0.497 
E) 16.3

Question 3

The molecular weight of a gas is ________ g/mol if 3.5 g of the gas occupies 2.1 L at STP.

Accepted Answer

A) 41 
B) 5.5 × 103 
C) 37 
D) 4.6 × 102 
E) 2.7 × 10-2 
A) 41 
B) 5.5 × 103 
C) 37 
D) 4.6 × 102 
E) 2.7 × 10-2

Question 4

A sample of H2 gas (12.28 g)occupies 100.0 L at 400.0 K and 2.00 atm. A sample weighing 9.49 g occupies ________ L at 353 K and 2.00 atm.

Accepted Answer

A) 109 
B) 68.2 
C) 54.7 
D) 147 
E) 77.3 
A) 109 
B) 68.2 
C) 54.7 
D) 147 
E) 77.3

Question 5

Which noble gas is expected to show the largest deviations from the ideal gas behavior?

Accepted Answer

A) helium 
B) neon 
C) argon 
D) krypton 
E) xenon 
A) helium 
B) neon 
C) argon 
D) krypton 
E) xenon

Question 6

If 3.21 mol of a gas occupies 56.2 L at 44 °C and 793 torr, 4.73 mol of this gas occupies ________ L under these conditions.

Accepted Answer

A) 14.7 
B) 61.7 
C) 30.9 
D) 82.8 
E) 478 
A) 14.7 
B) 61.7 
C) 30.9 
D) 82.8 
E) 478

Question 7

Given the equation:
C2H6 (g) + O2 (g)→ CO2 (g) + H2O (g) (not balanced)
Determine the number of liters of O2 consumed at STP when 60.0 grams of C2H6 is burned.

Accepted Answer

Question 8

The density of air at STP is 1.285 g/L. Which of the following cannot be used to fill a balloon that will float in air at STP?

Accepted Answer

A) CH4 
B) NO 
C) Ne 
D) NH3 
E) HF 
A) CH4 
B) NO 
C) Ne 
D) NH3 
E) HF

Question 9

A closed-end manometer was attached to a vessel containing argon. The difference in the mercury levels in the two arms of the manometer was 9.60 cm. Atmospheric pressure was 783 mm Hg. The pressure of the argon in the container was ________ mm Hg.

Accepted Answer

A) 96.0 
B) 661 
C) 773 
D) 793 
E) 882 
A) 96.0 
B) 661 
C) 773 
D) 793 
E) 882

Question 10

The reaction of 50 mL of Cl2 gas with 50 mL of C2H4 gas via the equation: Cl2 (g) + C2H4 (g) → C2H4Cl2 (g)
Will produce a total of ________ mL of products if pressure and temperature are kept constant.

Accepted Answer

A) 100 
B) 50 
C) 25 
D) 125 
E) 150 
A) 100 
B) 50 
C) 25 
D) 125 
E) 150

Question 11

The density of krypton gas at 0.866 atm and 44.4 °C is ________ g/L.

Accepted Answer

A) 0.0332 
B) 0.359 
C) 0.238 
D) 2.78 
E) 5.57 
A) 0.0332 
B) 0.359 
C) 0.238 
D) 2.78 
E) 5.57

Question 12

The molecular weight of a gas that has a density of 7.10 g/L at 25.0 °C and 1.00 atm pressure is ________ g/mol.

Accepted Answer

A) 174 
B) 14.6 
C) 28.0 
D) 5.75 × 10-3 
E) 6.85 × 10-2 
A) 174 
B) 14.6 
C) 28.0 
D) 5.75 × 10-3 
E) 6.85 × 10-2

Question 13

A mixture of He and Ne at a total pressure of 0.95 atm is found to contain 0.32 mol of He and 0.56 mol of Ne. The partial pressure of Ne is ________ atm.

Accepted Answer

A) 1.7 
B) 1.5 
C) 0.60 
D) 0.35 
E) 1.0 
A) 1.7 
B) 1.5 
C) 0.60 
D) 0.35 
E) 1.0

Question 14

The mass of nitrogen dioxide contained in a 4.32 L vessel at 48 °C and 141600 Pa is ________ g.

Accepted Answer

A) 5.35 × 104 
B) 53.5 
C) 10.5 
D) 70.5 
E) 9.46 × 10-2 
A) 5.35 × 104 
B) 53.5 
C) 10.5 
D) 70.5 
E) 9.46 × 10-2

Question 15

What volume (L)of NH3 gas at STP is produced by the complete reaction of 7.5 g of H2O according to the following reaction? Mg3N2 (s) + 6H2O (l) → 3Mg(OH)2  (aq) + 2NH3 (g)

Accepted Answer

A) 3.1 
B) 9.3 
C) 19 
D) 28 
E) 0.32 
A) 3.1 
B) 9.3 
C) 19 
D) 28 
E) 0.32

Which one of the following gases would deviate the least from ideal gas behavior?

A tank containing both HF and HBr gases developed a leak. The ratio of the rate of effusion of HF to the rate of effusion of HBr is ________.

The molecular weight of a gas is ________ g/mol if 3.5 g of the gas occupies 2.1 L at STP.

A sample of H₂ gas (12.28 g)occupies 100.0 L at 400.0 K and 2.00 atm. A sample weighing 9.49 g occupies ________ L at 353 K and 2.00 atm.

Which noble gas is expected to show the largest deviations from the ideal gas behavior?

If 3.21 mol of a gas occupies 56.2 L at 44 °C and 793 torr, 4.73 mol of this gas occupies ________ L under these conditions.

Given the equation: C₂H₆ (g) + O₂ (g)→ CO₂ (g) + H₂O (g) (not balanced) Determine the number of liters of O₂ consumed at STP when 60.0 grams of C₂H₆ is burned.

The density of air at STP is 1.285 g/L. Which of the following cannot be used to fill a balloon that will float in air at STP?

A closed-end manometer was attached to a vessel containing argon. The difference in the mercury levels in the two arms of the manometer was 9.60 cm. Atmospheric pressure was 783 mm Hg. The pressure of the argon in the container was ________ mm Hg.

The reaction of 50 mL of Cl₂ gas with 50 mL of C₂H₄ gas via the equation: Cl₂ (g) + C₂H₄ (g) → C₂H₄Cl₂ (g) Will produce a total of ________ mL of products if pressure and temperature are kept constant.

The density of krypton gas at 0.866 atm and 44.4 °C is ________ g/L.

The molecular weight of a gas that has a density of 7.10 g/L at 25.0 °C and 1.00 atm pressure is ________ g/mol.

A mixture of He and Ne at a total pressure of 0.95 atm is found to contain 0.32 mol of He and 0.56 mol of Ne. The partial pressure of Ne is ________ atm.

The mass of nitrogen dioxide contained in a 4.32 L vessel at 48 °C and 141600 Pa is ________ g.

What volume (L)of NH₃ gas at STP is produced by the complete reaction of 7.5 g of H₂O according to the following reaction? Mg₃N₂ (s) + 6H₂O (l) → 3Mg(OH)₂ (aq) + 2NH₃ (g)

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

Which one of the following gases would deviate the least from ideal gas behavior?

A tank containing both HF and HBr gases developed a leak. The ratio of the rate of effusion of HF to the rate of effusion of HBr is ________.

The molecular weight of a gas is ________ g/mol if 3.5 g of the gas occupies 2.1 L at STP.

A sample of H2 gas (12.28 g)occupies 100.0 L at 400.0 K and 2.00 atm. A sample weighing 9.49 g occupies ________ L at 353 K and 2.00 atm.

Which noble gas is expected to show the largest deviations from the ideal gas behavior?

If 3.21 mol of a gas occupies 56.2 L at 44 °C and 793 torr, 4.73 mol of this gas occupies ________ L under these conditions.

Given the equation: C2H6 (g) + O2 (g)→ CO2 (g) + H2O (g) (not balanced) Determine the number of liters of O2 consumed at STP when 60.0 grams of C2H6 is burned.

The density of air at STP is 1.285 g/L. Which of the following cannot be used to fill a balloon that will float in air at STP?

A closed-end manometer was attached to a vessel containing argon. The difference in the mercury levels in the two arms of the manometer was 9.60 cm. Atmospheric pressure was 783 mm Hg. The pressure of the argon in the container was ________ mm Hg.

The reaction of 50 mL of Cl2 gas with 50 mL of C2H4 gas via the equation: Cl2 (g) + C2H4 (g) → C2H4Cl2 (g) Will produce a total of ________ mL of products if pressure and temperature are kept constant.

The density of krypton gas at 0.866 atm and 44.4 °C is ________ g/L.

The molecular weight of a gas that has a density of 7.10 g/L at 25.0 °C and 1.00 atm pressure is ________ g/mol.

A mixture of He and Ne at a total pressure of 0.95 atm is found to contain 0.32 mol of He and 0.56 mol of Ne. The partial pressure of Ne is ________ atm.

The mass of nitrogen dioxide contained in a 4.32 L vessel at 48 °C and 141600 Pa is ________ g.

What volume (L)of NH3 gas at STP is produced by the complete reaction of 7.5 g of H2O according to the following reaction? Mg3N2 (s) + 6H2O (l) → 3Mg(OH)2 (aq) + 2NH3 (g)

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

A sample of H₂ gas (12.28 g)occupies 100.0 L at 400.0 K and 2.00 atm. A sample weighing 9.49 g occupies ________ L at 353 K and 2.00 atm.

Given the equation: C₂H₆ (g) + O₂ (g)→ CO₂ (g) + H₂O (g) (not balanced) Determine the number of liters of O₂ consumed at STP when 60.0 grams of C₂H₆ is burned.

The reaction of 50 mL of Cl₂ gas with 50 mL of C₂H₄ gas via the equation: Cl₂ (g) + C₂H₄ (g) → C₂H₄Cl₂ (g) Will produce a total of ________ mL of products if pressure and temperature are kept constant.

What volume (L)of NH₃ gas at STP is produced by the complete reaction of 7.5 g of H₂O according to the following reaction? Mg₃N₂ (s) + 6H₂O (l) → 3Mg(OH)₂ (aq) + 2NH₃ (g)