Oxygen can be prepared in the lab by heating potassium chlorate in the presence of a catalyst.The reaction is 2KClO3 $\rarr$ 2KCl + 3O2.How many moles of O2 could be obtained from one mole of KClO3?

A) 1.5 B) 3.0 C) 1.0 D) 2.0 A) 1.5 B) 3.0 C) 1.0 D) 2.0

What substance is reduced in the following reaction? 4HCl + MnO2 $\rarr$ Cl2 + 2H2O + MnCl2

A) Cl in HCl B) Mn in MnO2 C) H in HCl D) O in MnO2 A) Cl in HCl B) Mn in MnO2 C) H in HCl D) O in MnO2

The Haber Process is a method for the production of ammonia,an important chemical intermediate.The reaction for this process is: N2 + 3H2 $\rarr$ 2NH3.When the equation is correctly interpreted in terms of moles,how many moles of H2 will react with one mole of N2?

A) 1 B) 2 C) 3 D) 6 A) 1 B) 2 C) 3 D) 6

How many grams of N2 are required to completely react with 3.03 grams of H2 for the following balanced chemical equation? N2 + 3H2 $\rarr$ 2NH3

A) 1.00 B) 6.00 C) 14.0 D) 28.0 A) 1.00 B) 6.00 C) 14.0 D) 28.0

Acetylene,C2H2,burns according to the following reaction: C2H2+5O2$\rarr$ 4CO2+2H2O.Suppose 1.20 g of C2H2 is mixed with 3.50 g of O2 in a closed,steel container,and the mixture is ignited.What substances will be found in the mixture left when the burning is complete?

A) CO2 and H2 B) O2,CO2,and H2O C) C2H2,CO2,and H2O D) O2,C2H2,CO2,and H2O A) CO2 and H2 B) O2,CO2,and H2O C) C2H2,CO2,and H2O D) O2,C2H2,CO2,and H2O

The reaction below would be considered _____ . CaCO3 + heat $\rarr$ CaO + CO2

A) an endothermic combination. B) an exothermic combination. C) an endothermic decomposition. D) an exothermic decomposition. A) an endothermic combination. B) an exothermic combination. C) an endothermic decomposition. D) an exothermic decomposition.

Exam 5: Chemical Reactions

Oxygen can be prepared in the lab by heating potassium chlorate in the presence of a catalyst.The reaction is 2KClO₃ $\rarr$ 2KCl + 3O₂.How many moles of O₂ could be obtained from one mole of KClO₃?

(Multiple Choice)

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Question 21

What substance is reduced in the following reaction? 4HCl + MnO₂ $\rarr$ Cl₂ + 2H₂O + MnCl₂

(Multiple Choice)

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Question 22

In which of the following does an element have an oxidation number of +4?

(Multiple Choice)

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Question 23

Which of the following reactions is correctly balanced?

(Multiple Choice)

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Question 24

The Haber Process is a method for the production of ammonia,an important chemical intermediate.The reaction for this process is: N₂ + 3H₂ $\rarr$ 2NH₃.When the equation is correctly interpreted in terms of moles,how many moles of H₂ will react with one mole of N₂?

(Multiple Choice)

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Question 25

How many grams of N₂ are required to completely react with 3.03 grams of H₂ for the following balanced chemical equation? N₂ + 3H₂ $\rarr$ 2NH₃

(Multiple Choice)

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Question 26

Which of the following phrases can be used to describe the process of reduction?

(Multiple Choice)

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Question 27

When the equation below is properly balanced,what coefficient is in front of KCl? KClO₃ $\rarr$ KCl + O₂

(Multiple Choice)

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Question 28

Which of the following is a double replacement reaction?

(Multiple Choice)

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Question 29

Which of the following conversion factors would allow one to calculate the amount of PbI₂ produced from a given amount of NaI in the following unbalanced reaction? Pb(NO₃)₂ + Nal $\rarr$ Pbl₂ + NaNO₃

(Multiple Choice)

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Question 30

A container is filled with 4.0 g H₂ and 5.0 g O₂.The mixture is ignited to produce water according to the following equation.How much water is produced? 2H₂ + O₂ $\rarr$ 2H₂O

(Multiple Choice)

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Question 31

Products are always on the right side of a chemical equation.

(True/False)

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Question 32

Acetylene,C₂H₂,burns according to the following reaction: C₂H₂+5O₂ $\rarr$ 4CO₂+2H₂O.Suppose 1.20 g of C₂H₂ is mixed with 3.50 g of O₂ in a closed,steel container,and the mixture is ignited.What substances will be found in the mixture left when the burning is complete?

(Multiple Choice)

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Question 33

The reducing agent is the substance that is reduced in the reaction.

(True/False)

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Question 34

Which ions will appear in the total ionic equation for the following reaction?

(Multiple Choice)

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Question 35

The reaction Mg + 3N₂ $\rarr$ Mg₃N₂ is correctly balanced as written.

(True/False)

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Question 36

In the reaction 2CH₄ + O₂ $\rarr$ 2CO + 4H₂,how many molecules of CO will be produced by the complete reaction of 1.60 grams of CH₄?

(Multiple Choice)

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Question 37

The reaction below would be considered _____ . CaCO₃ + heat $\rarr$ CaO + CO₂

(Multiple Choice)

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Question 38

Which species would be considered a spectator ion based on the following equation? Ba²⁺+ 2NO₃^- + 2Na⁺ + SO₄²⁺ $\rarr$ BaSO_4(s) + 2NO₃^- + 2Na⁺

(Multiple Choice)

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Question 39

What is the oxidation number of Br in ?

(Multiple Choice)

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Question 40

Showing 21 - 40 of 89

Exam 5: Chemical Reactions

Oxygen can be prepared in the lab by heating potassium chlorate in the presence of a catalyst.The reaction is 2KClO3 →\rarr→ 2KCl + 3O2.How many moles of O2 could be obtained from one mole of KClO3?

What substance is reduced in the following reaction? 4HCl + MnO2 →\rarr→ Cl2 + 2H2O + MnCl2

In which of the following does an element have an oxidation number of +4?

Which of the following reactions is correctly balanced?

The Haber Process is a method for the production of ammonia,an important chemical intermediate.The reaction for this process is: N2 + 3H2 →\rarr→ 2NH3.When the equation is correctly interpreted in terms of moles,how many moles of H2 will react with one mole of N2?

How many grams of N2 are required to completely react with 3.03 grams of H2 for the following balanced chemical equation? N2 + 3H2 →\rarr→ 2NH3

Which of the following phrases can be used to describe the process of reduction?

When the equation below is properly balanced,what coefficient is in front of KCl? KClO3 →\rarr→ KCl + O2

Which of the following is a double replacement reaction?

Which of the following conversion factors would allow one to calculate the amount of PbI2 produced from a given amount of NaI in the following unbalanced reaction? Pb(NO3)2 + Nal →\rarr→ Pbl2 + NaNO3

A container is filled with 4.0 g H2 and 5.0 g O2.The mixture is ignited to produce water according to the following equation.How much water is produced? 2H2 + O2 →\rarr→ 2H2O

Products are always on the right side of a chemical equation.

Acetylene,C2H2,burns according to the following reaction: C2H2+5O2 →\rarr→ 4CO2+2H2O.Suppose 1.20 g of C2H2 is mixed with 3.50 g of O2 in a closed,steel container,and the mixture is ignited.What substances will be found in the mixture left when the burning is complete?

The reducing agent is the substance that is reduced in the reaction.

Which ions will appear in the total ionic equation for the following reaction?

The reaction Mg + 3N2 →\rarr→ Mg3N2 is correctly balanced as written.

In the reaction 2CH4 + O2 →\rarr→ 2CO + 4H2,how many molecules of CO will be produced by the complete reaction of 1.60 grams of CH4?

The reaction below would be considered _____ . CaCO3 + heat →\rarr→ CaO + CO2

Which species would be considered a spectator ion based on the following equation? Ba2+ + 2NO3- + 2Na+ + SO42+ →\rarr→ BaSO4(s) + 2NO3- + 2Na+

What is the oxidation number of Br in ?

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Oxygen can be prepared in the lab by heating potassium chlorate in the presence of a catalyst.The reaction is 2KClO₃ $\rarr$ 2KCl + 3O₂.How many moles of O₂ could be obtained from one mole of KClO₃?

What substance is reduced in the following reaction? 4HCl + MnO₂ $\rarr$ Cl₂ + 2H₂O + MnCl₂

The Haber Process is a method for the production of ammonia,an important chemical intermediate.The reaction for this process is: N₂ + 3H₂ $\rarr$ 2NH₃.When the equation is correctly interpreted in terms of moles,how many moles of H₂ will react with one mole of N₂?

How many grams of N₂ are required to completely react with 3.03 grams of H₂ for the following balanced chemical equation? N₂ + 3H₂ $\rarr$ 2NH₃

When the equation below is properly balanced,what coefficient is in front of KCl? KClO₃ $\rarr$ KCl + O₂

Which of the following conversion factors would allow one to calculate the amount of PbI₂ produced from a given amount of NaI in the following unbalanced reaction? Pb(NO₃)₂ + Nal $\rarr$ Pbl₂ + NaNO₃

A container is filled with 4.0 g H₂ and 5.0 g O₂.The mixture is ignited to produce water according to the following equation.How much water is produced? 2H₂ + O₂ $\rarr$ 2H₂O

Acetylene,C₂H₂,burns according to the following reaction: C₂H₂+5O₂ $\rarr$ 4CO₂+2H₂O.Suppose 1.20 g of C₂H₂ is mixed with 3.50 g of O₂ in a closed,steel container,and the mixture is ignited.What substances will be found in the mixture left when the burning is complete?

The reaction Mg + 3N₂ $\rarr$ Mg₃N₂ is correctly balanced as written.

In the reaction 2CH₄ + O₂ $\rarr$ 2CO + 4H₂,how many molecules of CO will be produced by the complete reaction of 1.60 grams of CH₄?

The reaction below would be considered _____ . CaCO₃ + heat $\rarr$ CaO + CO₂

Which species would be considered a spectator ion based on the following equation? Ba²⁺+ 2NO₃^- + 2Na⁺ + SO₄²⁺ $\rarr$ BaSO_4(s) + 2NO₃^- + 2Na⁺