Question 1

When ________ is constant,the enthalpy change of a process equal to the amount of heat transferred into or out of the system?

Accepted Answer

A) temperature 
B) volume 
C) pressure and volume 
D) temperature and volume 
E) pressure 
A) temperature 
B) volume 
C) pressure and volume 
D) temperature and volume 
E) pressure

Question 2

One joule equals 1 kg-m2/s2.

Accepted Answer

A) True 
 B)False

Question 3

Calculate the work (kJ)done during a reaction in which the internal volume contracts from   to   against an outside pressure of

Accepted Answer

A) 31 kJ 
B) 43 kJ 
C) -31 kJ 
D) -43 kJ 
E) 0 kJ; No work is done. 
A) 31 kJ 
B) 43 kJ 
C) -31 kJ 
D) -43 kJ 
E) 0 kJ; No work is done.

Question 4

A ________ ΔH corresponds to an ________ process.

Accepted Answer

A) negative, endothermic 
B) negative, exothermic 
C) positive, exothermic 
D) zero, exothermic 
E) zero, endothermic 
A) negative, endothermic 
B) negative, exothermic 
C) positive, exothermic 
D) zero, exothermic 
E) zero, endothermic

Question 5

Of the following,which one is a state function?

Accepted Answer

A) H 
B) q 
C) w 
D) heat 
E) none of the above 
A) H 
B) q 
C) w 
D) heat 
E) none of the above

Question 6

CH3OH (l)decomposes into carbon monoxide and hydrogen gas in the presence of heat.How much heat is consumed when 5.75 g of CO (g)is formed? ΔH° = +128.1 kJ.

Accepted Answer

A) 26.3 kJ 
B) 23.3 kJ 
C) 62.0 kJ 
D) 162 kJ 
E) 8.3 kJ 
A) 26.3 kJ 
B) 23.3 kJ 
C) 62.0 kJ 
D) 162 kJ 
E) 8.3 kJ

Question 7

Calculate the kinetic energy in J of an electron moving at 6.00 × 106 m/s.The mass of an electron is 9.11 × 10-28 g.

Accepted Answer

A) 4.98 × 10-48 J 
B) 3.28 × 10-14 J 
C) 1.64 × 10-17 J 
D) 2.49 × 10-48 J 
E) 6.56 × 10-14 J 
A) 4.98 × 10-48 J 
B) 3.28 × 10-14 J 
C) 1.64 × 10-17 J 
D) 2.49 × 10-48 J 
E) 6.56 × 10-14 J

Question 8

Given the data in the table below,ΔH° for the reaction 2CO (g)+ O2 (g)→ 2CO2 (g)
Is ________ kJ.

Accepted Answer

A) -566.4 
B) -283.2 
C) 283.2 
D) -677.0 
E) The ΔH°f of O2 (g)is needed for the calculation. 
A) -566.4 
B) -283.2 
C) 283.2 
D) -677.0 
E) The ΔH°f of O2 (g)is needed for the calculation.

Question 9

The specific heat of liquid bromine is 0.226 J/g-K. How much heat (J)is required to raise the temperature of 10.0 mL of bromine from 25.00 °C to 27.30 °C? The density of liquid bromine: 3.12 g/mL.

Accepted Answer

A) 5.20 J 
B) 16.2 J 
C) 300 J 
D) 32.4 J 
E) 10.4 J 
A) 5.20 J 
B) 16.2 J 
C) 300 J 
D) 32.4 J 
E) 10.4 J

Question 10

Consider the following two reactions: A → 2B ΔH°rxn = 456.7 kJ/mol
A → C ΔH°rxn = -22.1 kJ/mol
Determine the enthalpy change for the process:
2B → C

Accepted Answer

A) -478.8 kJ/mol 
B) -434.6 kJ/mol 
C) 434.6 kJ/mol 
D) 478.8 kJ/mol 
E) More information is needed to solve the problem. 
A) -478.8 kJ/mol 
B) -434.6 kJ/mol 
C) 434.6 kJ/mol 
D) 478.8 kJ/mol 
E) More information is needed to solve the problem.

Question 11

Petroleum is a liquid that can be refined to produce fuels such as gasoline,diesel oil,and kerosene.

Accepted Answer

A) True 
 B)False

Question 12

Renewable energy sources are essentially exhaustible.

Accepted Answer

A) True 
 B)False

Question 13

The enthalpy change for the following reaction is -483.6 kJ: 2H2 (g)+ O2 (g)→ 2H2O (g)
Therefore,the enthalpy change for the following reaction is ________ kJ.
4H2 (g)+ 2O2 (g)→ 4H2O (g)

Accepted Answer

A) -483.6 
B) -967.2 
C) 2.34 × 105 
D) 483.6 
E) 967.2 
A) -483.6 
B) -967.2 
C) 2.34 × 105 
D) 483.6 
E) 967.2

Question 14

A sample of aluminum metal absorbs 11.2 J of heat,upon which the temperature of the sample increases from 23.2 °C to 30.5 °C.Since the specific heat capacity of aluminum is 0.90 J/g-K,the mass of the sample is ________ g.

Accepted Answer

A) 72 
B) 1.7 
C) 10. 
D) 65 
E) 7.3 
A) 72 
B) 1.7 
C) 10. 
D) 65 
E) 7.3

When ________ is constant,the enthalpy change of a process equal to the amount of heat transferred into or out of the system?

One joule equals 1 kg-m²/s².

Calculate the work (kJ)done during a reaction in which the internal volume contracts from to against an outside pressure of

A ΔH corresponds to an process.

Of the following,which one is a state function?

CH₃OH (l)decomposes into carbon monoxide and hydrogen gas in the presence of heat.How much heat is consumed when 5.75 g of CO (g)is formed? ΔH° = +128.1 kJ.

Calculate the kinetic energy in J of an electron moving at 6.00 × 10⁶ m/s.The mass of an electron is 9.11 × 10^-28g.

Given the data in the table below,ΔH° for the reaction 2CO (g)+ O₂(g)→ 2CO₂ (g) Is ________ kJ.

The specific heat of liquid bromine is 0.226 J/g-K. How much heat (J)is required to raise the temperature of 10.0 mL of bromine from 25.00 °C to 27.30 °C? The density of liquid bromine: 3.12 g/mL.

Consider the following two reactions: A → 2B ΔH°_rxn= 456.7 kJ/mol A → C ΔH°_rxn= -22.1 kJ/mol Determine the enthalpy change for the process: 2B → C

Petroleum is a liquid that can be refined to produce fuels such as gasoline,diesel oil,and kerosene.

Renewable energy sources are essentially exhaustible.

The enthalpy change for the following reaction is -483.6 kJ: 2H₂ (g)+ O₂ (g)→ 2H₂O (g) Therefore,the enthalpy change for the following reaction is ________ kJ. 4H₂ (g)+ 2O₂ (g)→ 4H₂O (g)

A sample of aluminum metal absorbs 11.2 J of heat,upon which the temperature of the sample increases from 23.2 °C to 30.5 °C.Since the specific heat capacity of aluminum is 0.90 J/g-K,the mass of the sample is ________ g.

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

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 5: Thermochemistry

When ________ is constant,the enthalpy change of a process equal to the amount of heat transferred into or out of the system?

One joule equals 1 kg-m2/s2.

Calculate the work (kJ)done during a reaction in which the internal volume contracts from to against an outside pressure of

A ________ ΔH corresponds to an ________ process.

Of the following,which one is a state function?

CH3OH (l)decomposes into carbon monoxide and hydrogen gas in the presence of heat.How much heat is consumed when 5.75 g of CO (g)is formed? ΔH° = +128.1 kJ.

Calculate the kinetic energy in J of an electron moving at 6.00 × 106 m/s.The mass of an electron is 9.11 × 10-28 g.

Given the data in the table below,ΔH° for the reaction 2CO (g)+ O2 (g)→ 2CO2 (g) Is ________ kJ.

The specific heat of liquid bromine is 0.226 J/g-K. How much heat (J)is required to raise the temperature of 10.0 mL of bromine from 25.00 °C to 27.30 °C? The density of liquid bromine: 3.12 g/mL.

Consider the following two reactions: A → 2B ΔH°rxn = 456.7 kJ/mol A → C ΔH°rxn = -22.1 kJ/mol Determine the enthalpy change for the process: 2B → C

Petroleum is a liquid that can be refined to produce fuels such as gasoline,diesel oil,and kerosene.

Renewable energy sources are essentially exhaustible.

The enthalpy change for the following reaction is -483.6 kJ: 2H2 (g)+ O2 (g)→ 2H2O (g) Therefore,the enthalpy change for the following reaction is ________ kJ. 4H2 (g)+ 2O2 (g)→ 4H2O (g)

A sample of aluminum metal absorbs 11.2 J of heat,upon which the temperature of the sample increases from 23.2 °C to 30.5 °C.Since the specific heat capacity of aluminum is 0.90 J/g-K,the mass of the sample is ________ g.

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

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

One joule equals 1 kg-m²/s².

A ΔH corresponds to an process.

CH₃OH (l)decomposes into carbon monoxide and hydrogen gas in the presence of heat.How much heat is consumed when 5.75 g of CO (g)is formed? ΔH° = +128.1 kJ.

Calculate the kinetic energy in J of an electron moving at 6.00 × 10⁶ m/s.The mass of an electron is 9.11 × 10^-28g.

Given the data in the table below,ΔH° for the reaction 2CO (g)+ O₂(g)→ 2CO₂ (g) Is ________ kJ.

Consider the following two reactions: A → 2B ΔH°_rxn= 456.7 kJ/mol A → C ΔH°_rxn= -22.1 kJ/mol Determine the enthalpy change for the process: 2B → C

The enthalpy change for the following reaction is -483.6 kJ: 2H₂ (g)+ O₂ (g)→ 2H₂O (g) Therefore,the enthalpy change for the following reaction is ________ kJ. 4H₂ (g)+ 2O₂ (g)→ 4H₂O (g)