Question 1

Which of the following is an example of radiant energy?

Accepted Answer

A)  Energy contained in lightning 
B)  Energy stored in petrol 
C)  Energy obtained from sunlight 
D)  Energy contained in boiling water 
E)  Energy emitted from radioactive materials 
A)  Energy contained in lightning 
B)  Energy stored in petrol 
C)  Energy obtained from sunlight 
D)  Energy contained in boiling water 
E)  Energy emitted from radioactive materials

Question 2

Nuclear energy is a form of a potential energy.

Accepted Answer

A) True 
 B)False

Question 3

Consider the equation C2H5OH + 3O2 → 2CO2 + 3H2O. The ΔHocomb for the given reaction is _____.
(Given ΔHof  values of C2H5OH = -277.60 kJ/mol, CO2 = -393.50 kJ/mol, and H2O = -285.30 kJ/mol)

Accepted Answer

A)  -1920.5 kJ 
B)  1365.3 kJ 
C)  -1365.3 kJ 
D)  -1642.9 kJ 
E)  1920.5 kJ 
A)  -1920.5 kJ 
B)  1365.3 kJ 
C)  -1365.3 kJ 
D)  -1642.9 kJ 
E)  1920.5 kJ

Question 4

How is coal converted to liquid fuels?

Accepted Answer

Coal liquefaction methods use a catalyst

Question 5

A glass of milk contains 85.0 g of water, 5.0 g of carbohydrates, 3.0 g of fats, and 5.0 g of proteins. The caloric content of milk is _____ Cal.

Accepted Answer

A)  92 
B)  77 
C)  67 
D)  52 
E)  65 
A)  92 
B)  77 
C)  67 
D)  52 
E)  65

Question 6

The enthalpy change that occurs when a reaction is carried out with all reactants and products in their standard state is known as the _____.

Accepted Answer

standard e

Question 7

The reported caloric content of foods does not include the ΔHcomb of _____.

Accepted Answer

A)  carbohydrates 
B)  vitamins 
C)  proteins 
D)  fats 
E)  minerals 
A)  carbohydrates 
B)  vitamins 
C)  proteins 
D)  fats 
E)  minerals

Question 8

The Celsius scale is also called the _____ because of its 100 divisions.

Accepted Answer

The answer of The Celsius scale is also called the...

Question 9

In the equation ΔE = q + w, the symbol E represents the _____.

Accepted Answer

A)  heat 
B)  temperature 
C)  enthalpy 
D)  internal energy 
E)  work done 
A)  heat 
B)  temperature 
C)  enthalpy 
D)  internal energy 
E)  work done

Question 10

Bomb calorimeter is a constant-pressure calorimeter.

Accepted Answer

A) True 
 B)False

Question 11

How are the caloric values reported for foods different from the enthalpy of combustion of the same foods burned in a calorimeter?

Accepted Answer

@#LAT-DLM&The caloric content of a food is always

Question 12

The caloric content of a 6.0 oz chocolate bar that has a fuel value of 3.8 kJ /g is _____ cal.

Accepted Answer

A)  29 × 102 
B)  18 × 102 
C)  6.0 × 102 
D)  51 × 101 
E)  1.5 × 102 
A)  29 × 102 
B)  18 × 102 
C)  6.0 × 102 
D)  51 × 101 
E)  1.5 × 102

Question 13

The units of mass, height, and force of gravity are converted to correspond to the units of energy expressed in joules.

Accepted Answer

A) True 
 B)False

Which of the following is an example of radiant energy?

Nuclear energy is a form of a potential energy.

Consider the equation C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O. The ΔH^o_comb for the given reaction is _____. (Given ΔH^o_f values of C₂H₅OH = -277.60 kJ/mol, CO₂ = -393.50 kJ/mol, and H₂O = -285.30 kJ/mol)

How is coal converted to liquid fuels?

A glass of milk contains 85.0 g of water, 5.0 g of carbohydrates, 3.0 g of fats, and 5.0 g of proteins. The caloric content of milk is _____ Cal.

The enthalpy change that occurs when a reaction is carried out with all reactants and products in their standard state is known as the _____.

The reported caloric content of foods does not include the ΔH_comb of _____.

The Celsius scale is also called the _____ because of its 100 divisions.

In the equation ΔE = q + w, the symbol E represents the _____.

Bomb calorimeter is a constant-pressure calorimeter.

How are the caloric values reported for foods different from the enthalpy of combustion of the same foods burned in a calorimeter?

The caloric content of a 6.0 oz chocolate bar that has a fuel value of 3.8 kJ /g is _____ cal.

The units of mass, height, and force of gravity are converted to correspond to the units of energy expressed in joules.

Introduction to Chemistry

Molecules, Ions, and Chemical Formulas

Chemical Reactions

Reactions in Aqueous Solution

The Structure of Atoms

The Periodic Table and Periodic Trends

Ionic Versus Covalent Bonding

Molecular Geometry and Covalent Bonding Models

Gases

Liquids

Solids

Solutions

Chemical Kinetics

Chemical Equilibrium

Aqueous Acidbase Equilibriums

Solubility and Complexation Equilibriums

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Periodic Trends and the S-Block Elements

The P-Block Elements

The D-Block Elements

Organic Compounds

Filters

Exam 5: Energy Changes in Chemical Reactions

Which of the following is an example of radiant energy?

Nuclear energy is a form of a potential energy.

Consider the equation C2H5OH + 3O2 → 2CO2 + 3H2O. The ΔHocomb for the given reaction is _____. (Given ΔHof values of C2H5OH = -277.60 kJ/mol, CO2 = -393.50 kJ/mol, and H2O = -285.30 kJ/mol)

How is coal converted to liquid fuels?

A glass of milk contains 85.0 g of water, 5.0 g of carbohydrates, 3.0 g of fats, and 5.0 g of proteins. The caloric content of milk is _____ Cal.

The enthalpy change that occurs when a reaction is carried out with all reactants and products in their standard state is known as the _____.

The reported caloric content of foods does not include the ΔHcomb of _____.

The Celsius scale is also called the _____ because of its 100 divisions.

In the equation ΔE = q + w, the symbol E represents the _____.

Bomb calorimeter is a constant-pressure calorimeter.

How are the caloric values reported for foods different from the enthalpy of combustion of the same foods burned in a calorimeter?

The caloric content of a 6.0 oz chocolate bar that has a fuel value of 3.8 kJ /g is _____ cal.

The units of mass, height, and force of gravity are converted to correspond to the units of energy expressed in joules.

Introduction to Chemistry

Molecules, Ions, and Chemical Formulas

Chemical Reactions

Reactions in Aqueous Solution

The Structure of Atoms

The Periodic Table and Periodic Trends

Ionic Versus Covalent Bonding

Molecular Geometry and Covalent Bonding Models

Gases

Liquids

Solids

Solutions

Chemical Kinetics

Chemical Equilibrium

Aqueous Acidbase Equilibriums

Solubility and Complexation Equilibriums

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Periodic Trends and the S-Block Elements

The P-Block Elements

The D-Block Elements

Organic Compounds

Filters

Consider the equation C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O. The ΔH^o_comb for the given reaction is _____. (Given ΔH^o_f values of C₂H₅OH = -277.60 kJ/mol, CO₂ = -393.50 kJ/mol, and H₂O = -285.30 kJ/mol)

The reported caloric content of foods does not include the ΔH_comb of _____.