Question 1

Which of the following is the major contributor to energy consumption?

Accepted Answer

A)  residential 
B)  commercial 
C)  transportation 
D)  industrial 
E)  atmospheric 
A)  residential 
B)  commercial 
C)  transportation 
D)  industrial 
E)  atmospheric

Question 2

Use the ΔH°f and ΔH°rxn information provided to calculate ΔH°f for IF: ΔH°f (kJ/mol) IF7(g)+ I2(g)→ IF5(g)+ 2 IF(g)ΔH°rxn = -89 kJ
IF7(g)-941
IF5(g)-840

Accepted Answer

A)  101 kJ/mol 
B)  -146 kJ/mol 
C)  -190. kJ/mol 
D)  -95 kJ/mol 
E)  24 kJ/mol 
A)  101 kJ/mol 
B)  -146 kJ/mol 
C)  -190. kJ/mol 
D)  -95 kJ/mol 
E)  24 kJ/mol

Question 3

Which of the following is TRUE if ΔEsys = 260 J?

Accepted Answer

A)  The system is gaining 260 J, while the surroundings are losing 260 J. 
B)  The system is losing 260 J, while the surroundings are gaining 260 J. 
C)  Both the system and the surroundings are gaining 260 J. 
D)  Both the system and the surroundings are losing 260 J. 
E)  None of the above is true. 
A)  The system is gaining 260 J, while the surroundings are losing 260 J. 
B)  The system is losing 260 J, while the surroundings are gaining 260 J. 
C)  Both the system and the surroundings are gaining 260 J. 
D)  Both the system and the surroundings are losing 260 J. 
E)  None of the above is true.

Which of the following is the major contributor to energy consumption?

Use the ΔH°_f and ΔH°_rxn information provided to calculate ΔH°_f for IF: ΔH°_{f (kJ/mol)} IF₇(g)+ I₂(g)→ IF₅(g)+ 2 IF(g)ΔH°_rxn= -89 kJ IF₇(g)-941 IF₅(g)-840

Which of the following is TRUE if ΔE_sys = 260 J?

Matter, measurement, and Problem Solving

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Exam 6: Thermochemistry

Which of the following is the major contributor to energy consumption?

Use the ΔH°f and ΔH°rxn information provided to calculate ΔH°f for IF: ΔH°f (kJ/mol) IF7(g)+ I2(g)→ IF5(g)+ 2 IF(g)ΔH°rxn = -89 kJ IF7(g)-941 IF5(g)-840

Which of the following is TRUE if ΔEsys = 260 J?

Matter, measurement, and Problem Solving

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Use the ΔH°_f and ΔH°_rxn information provided to calculate ΔH°_f for IF: ΔH°_{f (kJ/mol)} IF₇(g)+ I₂(g)→ IF₅(g)+ 2 IF(g)ΔH°_rxn= -89 kJ IF₇(g)-941 IF₅(g)-840

Which of the following is TRUE if ΔE_sys = 260 J?