Question 1

The process that converts the energy stored in molecules to a form usable by an animal is respiration.

Accepted Answer

A) True 
 B)False  True

Question 2

How many moles of N2 are required to completely react with 3.53 grams of H2 for the following balanced chemical equation? 
N2 + 3H2 → 2NH3

Accepted Answer

A) 16.4 mol 
B) 1.17 mol 
C) 0.584 mol 
D) 5.25 mol 
A) 16.4 mol 
B) 1.17 mol 
C) 0.584 mol 
D) 5.25 mol C

Question 3

An aqueous solution of sodium nitrate (NaNO3) is used in a reaction. The following should be used in the chemical equation for the reaction.
NaNO3(l)

Accepted Answer

A) True 
 B)False  False

Question 4

When natural gas (predominantly methane, CH4) burns in air. The following reaction occurs. How much energy is involved in the combustion of 13.0 g of methane?

Accepted Answer

A)    kcal 
B) 16.4 kcal 
C) 173 kcal 
D) 0.979 kcal 
A)    kcal 
B) 16.4 kcal 
C) 173 kcal 
D) 0.979 kcal

Question 5

Consider the following reaction.   How many grams of sucrose would produce 2546 kcal?

Accepted Answer

A) 649.4 g 
B) 1342 g 
C) 180.4 g 
D) 1.897 g 
A) 649.4 g 
B) 1342 g 
C) 180.4 g 
D) 1.897 g

Question 6

Consider the following energy diagram showing a reaction with and without a catalyst..   
Fill in the blank with the appropriate letter (A,B,C,etc.).
-The heat of reaction would be represented by _____________________.

Accepted Answer

The answer of Consider the following energy diagram showing a...

Question 7

Complete each of the following sentences using one of the terms listed below.
physical change
chemical change
reactant
product
coefficient
physical state
-Consider the image below. If the balanced equation for this reaction were written oxygen would have a ___________ of 1.

Accepted Answer

The answer of Complete each of the following sentences using...

Question 8

Copper reacts with nitric acid as given in the following reaction.   Predict the effect of the given change on the rate of the reaction by filling in the blank with one of the following terms.
increase
decrease
no effect
-The concentration of the nitric acid is increased. ______________________

Accepted Answer

The answer of Copper reacts with nitric acid as given...

Question 9

Reactions that have a low energy of activation tend to proceed at a faster rate.

Accepted Answer

A) True 
 B)False

Question 10

The following reaction could be classified as a combustion reaction.
2Al2O3 (s) → 4Al(s) + 3O2(g)

Accepted Answer

A) True 
 B)False

Question 11

The following represents a typical energy diagram.   The reaction represented by this energy diagram is endothermic.

Accepted Answer

A) True 
 B)False

Question 12

According to the law of mass conservation, which of the following may NEVER occur as a result of a chemical reaction?

Accepted Answer

A) creation of new chemical species 
B) reaction of starting materials 
C) rearranged to form new substances 
D) reduction in total mass 
A) creation of new chemical species 
B) reaction of starting materials 
C) rearranged to form new substances 
D) reduction in total mass

Question 13

What is the name of a branch on the principal carbon chain that contains three carbon atoms?

Accepted Answer

A) pentyl 
B) propyl 
C) ethyl 
D) methyl 
A) pentyl 
B) propyl 
C) ethyl 
D) methyl

Question 14

Per gram ________________________ produces the largest amount of energy when burned.

Accepted Answer

The answer of Per gram ________________________ produces the largest amount...

Question 15

Based on the following energy diagram, the heat of reaction for the reaction represented is approximately 20 kcal.

Accepted Answer

A) True 
 B)False

Question 16

Complete each of the following sentences using one of the terms listed below.
physical change
chemical change
reactant
product
coefficient
physical state
-The image below represents a________________.

Accepted Answer

The answer of Complete each of the following sentences using...

Question 17

During the carbon cycle plants produce the oxygen that is consumed by animals.

Accepted Answer

A) True 
 B)False

Question 18

Consider the following image representing an equilibrium mixture. The black spheres represent the reactant and the gray spheres the product.   If this reaction was started with only reactants, at equilibrium about 67% of the reactant was converted to product.

Accepted Answer

A) True 
 B)False

Question 19

Consider a sample of water in a closed container. When the reaction H2O(l)   H2O(g)
Has reached equilibrium, what can we say about any specific water molecule?

Accepted Answer

A) If it was present in the liquid it will always remain in the liquid. 
B) If it was present in the gas it will always remain in the gas. 
C) It will sometimes be in the liquid phase and sometimes in the gas phase. 
D) Both a and b are true. 
A) If it was present in the liquid it will always remain in the liquid. 
B) If it was present in the gas it will always remain in the gas. 
C) It will sometimes be in the liquid phase and sometimes in the gas phase. 
D) Both a and b are true.

Question 20

One Hawaiian sweet roll contains:
2.5 g fat
18 g carbohydrate
4.0 g protein
The total energy content of four rolls (to two significant figures) is 440 Calories.

Accepted Answer

A) True 
 B)False

The process that converts the energy stored in molecules to a form usable by an animal is respiration.

How many moles of N₂ are required to completely react with 3.53 grams of H₂ for the following balanced chemical equation? N₂ + 3H₂ → 2NH₃

An aqueous solution of sodium nitrate (NaNO₃) is used in a reaction. The following should be used in the chemical equation for the reaction. NaNO₃(l)

When natural gas (predominantly methane, CH₄) burns in air. The following reaction occurs. How much energy is involved in the combustion of 13.0 g of methane?

Consider the following reaction. How many grams of sucrose would produce 2546 kcal?

Consider the following energy diagram showing a reaction with and without a catalyst.. Fill in the blank with the appropriate letter (A,B,C,etc.). -The heat of reaction would be represented by _____________________.

Complete each of the following sentences using one of the terms listed below. physical change chemical change reactant product coefficient physical state -Consider the image below. If the balanced equation for this reaction were written oxygen would have a ___________ of 1.

Copper reacts with nitric acid as given in the following reaction. Predict the effect of the given change on the rate of the reaction by filling in the blank with one of the following terms. increase decrease no effect -The concentration of the nitric acid is increased. ______________________

Reactions that have a low energy of activation tend to proceed at a faster rate.

The following reaction could be classified as a combustion reaction. 2Al₂O₃ (s) → 4Al(s) + 3O₂(g)

The following represents a typical energy diagram. The reaction represented by this energy diagram is endothermic.

According to the law of mass conservation, which of the following may NEVER occur as a result of a chemical reaction?

What is the name of a branch on the principal carbon chain that contains three carbon atoms?

Per gram ________________________ produces the largest amount of energy when burned.

Based on the following energy diagram, the heat of reaction for the reaction represented is approximately 20 kcal.

Complete each of the following sentences using one of the terms listed below. physical change chemical change reactant product coefficient physical state -The image below represents a________________.

During the carbon cycle plants produce the oxygen that is consumed by animals.

Consider the following image representing an equilibrium mixture. The black spheres represent the reactant and the gray spheres the product. If this reaction was started with only reactants, at equilibrium about 67% of the reactant was converted to product.

Consider a sample of water in a closed container. When the reaction H₂O(l) H₂O(g) Has reached equilibrium, what can we say about any specific water molecule?

One Hawaiian sweet roll contains: 2.5 g fat 18 g carbohydrate 4.0 g protein The total energy content of four rolls (to two significant figures) is 440 Calories.

Measurements in Science and Medicine

Atoms, Elements, and Compounds

Chemical Bonds

Energy and Physical Properties

Solution Concentration

Acids and Bases

Nuclear Chemistry

Hydrocarbons: An Introduction to Organic Molecules

Hydration, Dehydration, and Alcohols

Carbonyl Compounds and Redox Reactions

Organic Acids and Bases

Condensation and Hydrolysis Reactions

Proteins

Carbohydrates

Lipids and Membranes

Nucleic Acids, Protein Synthesis, and Heredity

Filters

Exam 6: Chemical Reactions

The process that converts the energy stored in molecules to a form usable by an animal is respiration.

How many moles of N2 are required to completely react with 3.53 grams of H2 for the following balanced chemical equation? N2 + 3H2 → 2NH3

An aqueous solution of sodium nitrate (NaNO3) is used in a reaction. The following should be used in the chemical equation for the reaction. NaNO3(l)

When natural gas (predominantly methane, CH4) burns in air. The following reaction occurs. How much energy is involved in the combustion of 13.0 g of methane?

Consider the following reaction. How many grams of sucrose would produce 2546 kcal?

Consider the following energy diagram showing a reaction with and without a catalyst.. Fill in the blank with the appropriate letter (A,B,C,etc.). -The heat of reaction would be represented by _____________________.

Complete each of the following sentences using one of the terms listed below. physical change chemical change reactant product coefficient physical state -Consider the image below. If the balanced equation for this reaction were written oxygen would have a ___________ of 1.

Copper reacts with nitric acid as given in the following reaction. Predict the effect of the given change on the rate of the reaction by filling in the blank with one of the following terms. increase decrease no effect -The concentration of the nitric acid is increased. ______________________

Reactions that have a low energy of activation tend to proceed at a faster rate.

The following reaction could be classified as a combustion reaction. 2Al2O3 (s) → 4Al(s) + 3O2(g)

The following represents a typical energy diagram. The reaction represented by this energy diagram is endothermic.

According to the law of mass conservation, which of the following may NEVER occur as a result of a chemical reaction?

What is the name of a branch on the principal carbon chain that contains three carbon atoms?

Per gram ________________________ produces the largest amount of energy when burned.

Based on the following energy diagram, the heat of reaction for the reaction represented is approximately 20 kcal.

Complete each of the following sentences using one of the terms listed below. physical change chemical change reactant product coefficient physical state -The image below represents a________________.

During the carbon cycle plants produce the oxygen that is consumed by animals.

Consider the following image representing an equilibrium mixture. The black spheres represent the reactant and the gray spheres the product. If this reaction was started with only reactants, at equilibrium about 67% of the reactant was converted to product.

Consider a sample of water in a closed container. When the reaction H2O(l) H2O(g) Has reached equilibrium, what can we say about any specific water molecule?

One Hawaiian sweet roll contains: 2.5 g fat 18 g carbohydrate 4.0 g protein The total energy content of four rolls (to two significant figures) is 440 Calories.

Measurements in Science and Medicine

Atoms, Elements, and Compounds

Chemical Bonds

Energy and Physical Properties

Solution Concentration

Acids and Bases

Nuclear Chemistry

Hydrocarbons: An Introduction to Organic Molecules

Hydration, Dehydration, and Alcohols

Carbonyl Compounds and Redox Reactions

Organic Acids and Bases

Condensation and Hydrolysis Reactions

Proteins

Carbohydrates

Lipids and Membranes

Nucleic Acids, Protein Synthesis, and Heredity

Filters

How many moles of N₂ are required to completely react with 3.53 grams of H₂ for the following balanced chemical equation? N₂ + 3H₂ → 2NH₃

An aqueous solution of sodium nitrate (NaNO₃) is used in a reaction. The following should be used in the chemical equation for the reaction. NaNO₃(l)

When natural gas (predominantly methane, CH₄) burns in air. The following reaction occurs. How much energy is involved in the combustion of 13.0 g of methane?

The following reaction could be classified as a combustion reaction. 2Al₂O₃ (s) → 4Al(s) + 3O₂(g)

Consider a sample of water in a closed container. When the reaction H₂O(l) H₂O(g) Has reached equilibrium, what can we say about any specific water molecule?