Question 1

In the reaction shown below, which substances are dissolved in water?

Accepted Answer

A)  H2SO4 and CuSO4 
B)  Cu and CuSO4 
C)  Cu 
D)  H2 and H2SO4 
E)  H2 and Cu 
A)  H2SO4 and CuSO4 
B)  Cu and CuSO4 
C)  Cu 
D)  H2 and H2SO4 
E)  H2 and Cu

Question 2

The efficiency of a particular synthesis method is evaluated by determining the:

Accepted Answer

A)  molecular weight of the product. 
B)  stoichiometric coefficients. 
C)  limiting reactant. 
D)  theoretical yield. 
E)  percent yield. 
A)  molecular weight of the product. 
B)  stoichiometric coefficients. 
C)  limiting reactant. 
D)  theoretical yield. 
E)  percent yield.

Question 3

If 32.0 g of oxygen reacts with sufficient magnesium to produce magnesium oxide, what is the theoretical yield?

Accepted Answer

A)  20.2 g 
B)  32.0 g 
C)  40.3 g 
D)  80.6 g 
E)  161 g 
A)  20.2 g 
B)  32.0 g 
C)  40.3 g 
D)  80.6 g 
E)  161 g

Question 4

Which statement regarding the complete combustion of a carbon compound is correct?

Accepted Answer

A)  Carbon dioxide and water are consumed in the reaction and must be shown in the balanced equation. 
B)  Heat is produced in the reaction and must be shown in the balanced equation. 
C)  Balancing the equation requires knowing whether the products are gases or liquids. 
D)  Oxygen is consumed in the reaction and must be shown in the balanced equation. 
E)  The carbon compound is consumed in the reaction but need not be shown in the balanced equation. 
A)  Carbon dioxide and water are consumed in the reaction and must be shown in the balanced equation. 
B)  Heat is produced in the reaction and must be shown in the balanced equation. 
C)  Balancing the equation requires knowing whether the products are gases or liquids. 
D)  Oxygen is consumed in the reaction and must be shown in the balanced equation. 
E)  The carbon compound is consumed in the reaction but need not be shown in the balanced equation.

Question 5

Classify the following reaction.

Accepted Answer

A)  decomposition 
B)  displacement 
C)  combustion 
D)  exchange 
E)  combination 
A)  decomposition 
B)  displacement 
C)  combustion 
D)  exchange 
E)  combination

Question 6

The reaction below is an example of a(n) _____________ reaction.

Accepted Answer

The answer of The reaction below is an example of...

Question 7

How many grams of Na2O are formed by the complete reaction of 35.0 g of O2?

Accepted Answer

A)  33.9 g 
B)  56.7 g 
C)  67.8 g 
D)  113 g 
E)  136 g 
A)  33.9 g 
B)  56.7 g 
C)  67.8 g 
D)  113 g 
E)  136 g

Question 8

What is the percent yield when 0.750 mol of calcium reacts with sufficient oxygen to produce 34.4 g of CaO?

Accepted Answer

The answer of What is the percent yield when 0.750...

Question 9

A reaction has a theoretical yield of 48.23 g. It produces 28.81 g of product. Calculate the percent yield.

Accepted Answer

The answer of A reaction has a theoretical yield of...

Question 10

In the reaction given below, if 12 moles of aluminum oxide are consumed, how many moles of oxygen gas are produced?

Accepted Answer

A)  3 
B)  4 
C)  6 
D)  12 
E)  18 
A)  3 
B)  4 
C)  6 
D)  12 
E)  18

Question 11

A combination reaction is considered the opposite of a(n) _____________ reaction.

Accepted Answer

The answer of A combination reaction is considered the opposite...

Question 12

In the reaction below, 8.0 g of H2 react with 7.0 g of O2. Which of the following statements is incorrect?

Accepted Answer

A)  More moles of hydrogen are consumed than moles of oxygen. 
B)  More grams of hydrogen are consumed than grams of oxygen. 
C)  More grams of oxygen are consumed than grams of hydrogen. 
D)  More moles of water are produced than moles of oxygen are consumed. 
E)  More grams of water are produced than grams of oxygen are consumed. 
A)  More moles of hydrogen are consumed than moles of oxygen. 
B)  More grams of hydrogen are consumed than grams of oxygen. 
C)  More grams of oxygen are consumed than grams of hydrogen. 
D)  More moles of water are produced than moles of oxygen are consumed. 
E)  More grams of water are produced than grams of oxygen are consumed.

Question 13

Which of the following cannot be determined from a balanced chemical equation?

Accepted Answer

A)  The relative mass of each reactant and product. 
B)  The number of moles of reactants and products. 
C)  The number of molecules of reactants and products. 
D)  The number of atoms of each element reacting. 
E)  Whether the reaction will proceed as written. 
A)  The relative mass of each reactant and product. 
B)  The number of moles of reactants and products. 
C)  The number of molecules of reactants and products. 
D)  The number of atoms of each element reacting. 
E)  Whether the reaction will proceed as written.

Question 14

How many moles of oxygen will be produced if 27.6 grams of Al are produced?

Accepted Answer

A)  1.02 mol 
B)  0.256 mol 
C)  0.767 mol 
D)  24.6 mol 
E)  12.3 mol 
A)  1.02 mol 
B)  0.256 mol 
C)  0.767 mol 
D)  24.6 mol 
E)  12.3 mol

Question 15

The Roman numerals in the reaction given represent the coefficients in the balanced chemical equation. What are the values of the coefficients?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 16

If 935 g of cesium reacts with excess chlorine to produce 1036 g of cesium chloride, what is the percent yield for the reaction?

Accepted Answer

A)  43.7% 
B)  87.5% 
C)  90.3% 
D)  101% 
E)  None of these 
A)  43.7% 
B)  87.5% 
C)  90.3% 
D)  101% 
E)  None of these

Question 17

Which statement about the expression 6 C6H12O6 is not true?

Accepted Answer

A)  There are half as many oxygen atoms as hydrogen atoms. 
B)  There are 144 total atoms. 
C)  There are twice as many hydrogen atoms as carbon atoms. 
D)  There are six times as many carbon atoms as oxygen atoms. 
E)  There are 6 total molecules. 
A)  There are half as many oxygen atoms as hydrogen atoms. 
B)  There are 144 total atoms. 
C)  There are twice as many hydrogen atoms as carbon atoms. 
D)  There are six times as many carbon atoms as oxygen atoms. 
E)  There are 6 total molecules.

Question 18

The Roman numerals in the reaction given represent the coefficients in the balanced chemical equation. What are the values of the coefficients?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 19

For the reaction given below, how many moles of aluminum will react if 12 moles of Br2 react and 8 moles of AlBr3 are produced?

Accepted Answer

A)  4 
B)  8 
C)  12 
D)  16 
E)  40 
A)  4 
B)  8 
C)  12 
D)  16 
E)  40

Question 20

The Roman numerals in the reaction given represent the coefficients in the balanced chemical equation. What are the values of the coefficients?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

In the reaction shown below, which substances are dissolved in water?

The efficiency of a particular synthesis method is evaluated by determining the:

If 32.0 g of oxygen reacts with sufficient magnesium to produce magnesium oxide, what is the theoretical yield?

Which statement regarding the complete combustion of a carbon compound is correct?

Classify the following reaction.

The reaction below is an example of a(n) _____________ reaction.

How many grams of Na₂O are formed by the complete reaction of 35.0 g of O₂?

What is the percent yield when 0.750 mol of calcium reacts with sufficient oxygen to produce 34.4 g of CaO?

A reaction has a theoretical yield of 48.23 g. It produces 28.81 g of product. Calculate the percent yield.

In the reaction given below, if 12 moles of aluminum oxide are consumed, how many moles of oxygen gas are produced?

A combination reaction is considered the opposite of a(n) _____________ reaction.

In the reaction below, 8.0 g of H₂ react with 7.0 g of O₂. Which of the following statements is incorrect?

Which of the following cannot be determined from a balanced chemical equation?

How many moles of oxygen will be produced if 27.6 grams of Al are produced?

The Roman numerals in the reaction given represent the coefficients in the balanced chemical equation. What are the values of the coefficients?

If 935 g of cesium reacts with excess chlorine to produce 1036 g of cesium chloride, what is the percent yield for the reaction?

Which statement about the expression 6 C₆H₁₂O₆ is not true?

The Roman numerals in the reaction given represent the coefficients in the balanced chemical equation. What are the values of the coefficients?

For the reaction given below, how many moles of aluminum will react if 12 moles of Br₂ react and 8 moles of AlBr₃ are produced?

The Roman numerals in the reaction given represent the coefficients in the balanced chemical equation. What are the values of the coefficients?

The Nature of Chemistry

Atoms and Elements

Chemical Compounds

Chemical Reactions

Energy and Chemical Reactions

Electron Configurations and the Periodic Table

Covalent Bonding

Molecular Structure

Gases and the Atmosphere

Liquids, Solids, and Materials

Chemical Kinetics: Rates of Reactions

Chemical Equilibrium

The Chemistry of Solutes and Solutions

Acids and Bases

Additional Aqueous Equilibria

Thermodynamics: Directionality of Chemical Reactions

Electrochemistry and Its Applications

Nuclear Chemistry

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Exam 4: Quantities of Reactants and Products

In the reaction shown below, which substances are dissolved in water?

The efficiency of a particular synthesis method is evaluated by determining the:

If 32.0 g of oxygen reacts with sufficient magnesium to produce magnesium oxide, what is the theoretical yield?

Which statement regarding the complete combustion of a carbon compound is correct?

Classify the following reaction.

The reaction below is an example of a(n) _____________ reaction.

How many grams of Na2O are formed by the complete reaction of 35.0 g of O2?

What is the percent yield when 0.750 mol of calcium reacts with sufficient oxygen to produce 34.4 g of CaO?

A reaction has a theoretical yield of 48.23 g. It produces 28.81 g of product. Calculate the percent yield.

In the reaction given below, if 12 moles of aluminum oxide are consumed, how many moles of oxygen gas are produced?

A combination reaction is considered the opposite of a(n) _____________ reaction.

In the reaction below, 8.0 g of H2 react with 7.0 g of O2. Which of the following statements is incorrect?

Which of the following cannot be determined from a balanced chemical equation?

How many moles of oxygen will be produced if 27.6 grams of Al are produced?

The Roman numerals in the reaction given represent the coefficients in the balanced chemical equation. What are the values of the coefficients?

If 935 g of cesium reacts with excess chlorine to produce 1036 g of cesium chloride, what is the percent yield for the reaction?

Which statement about the expression 6 C6H12O6 is not true?

The Roman numerals in the reaction given represent the coefficients in the balanced chemical equation. What are the values of the coefficients?

For the reaction given below, how many moles of aluminum will react if 12 moles of Br2 react and 8 moles of AlBr3 are produced?

The Roman numerals in the reaction given represent the coefficients in the balanced chemical equation. What are the values of the coefficients?

The Nature of Chemistry

Atoms and Elements

Chemical Compounds

Chemical Reactions

Energy and Chemical Reactions

Electron Configurations and the Periodic Table

Covalent Bonding

Molecular Structure

Gases and the Atmosphere

Liquids, Solids, and Materials

Chemical Kinetics: Rates of Reactions

Chemical Equilibrium

The Chemistry of Solutes and Solutions

Acids and Bases

Additional Aqueous Equilibria

Thermodynamics: Directionality of Chemical Reactions

Electrochemistry and Its Applications

Nuclear Chemistry

Filters

How many grams of Na₂O are formed by the complete reaction of 35.0 g of O₂?

In the reaction below, 8.0 g of H₂ react with 7.0 g of O₂. Which of the following statements is incorrect?

Which statement about the expression 6 C₆H₁₂O₆ is not true?

For the reaction given below, how many moles of aluminum will react if 12 moles of Br₂ react and 8 moles of AlBr₃ are produced?