The reactants shown schematically below represent iron oxide, Fe2O3 and carbon monoxide, CO. Which of the following is the correct full balanced chemical equation for what is depicted?

A) Fe2O3+ 3 CO → 2 Fe + 3 CO2 B) Fe2O3+ 3 CO → 3 FeO + 2 C C) Fe2O3 + 3 CO → 3 FeO2 + 2 C D) Fe2O3+ 3 CO → 2 Fe + 3 C2O A) Fe2O3+ 3 CO → 2 Fe + 3 CO2 B) Fe2O3+ 3 CO → 3 FeO + 2 C C) Fe2O3 + 3 CO → 3 FeO2 + 2 C D) Fe2O3+ 3 CO → 2 Fe + 3 C2O

What is the number of grams of CO2 produced if you combust 0.50 mole of CH4 according to the following balanced equation? CH4 + 2 O2 → CO2 + 2 H2O

A) 22 g B) 10 g C) 44 g D) 32 g E) 1 g A) 22 g B) 10 g C) 44 g D) 32 g E) 1 g

What is the number of molecules of O2 consumed if you combust one mole of CH4 according to the following balanced equation? CH4 + 2 O2 → CO2 + 2 H2O

A) 1 molecule B) 2 molecules C) 6.022 × 1023 molecules D) 1.204 × 024 molecules E) 1 g of molecules A) 1 molecule B) 2 molecules C) 6.022 × 1023 molecules D) 1.204 × 024 molecules E) 1 g of molecules

Is the synthesis of ozone, O3, from oxygen, O2, an example of an exothermic or endothermic reaction?

A) exothermic because ultraviolet light is emitted during its formation B) endothermic because ultraviolet light is emitted during its formation C) exothermic because ultraviolet light is absorbed during its formation D) endothermic because ultraviolet light is absorbed during its formation A) exothermic because ultraviolet light is emitted during its formation B) endothermic because ultraviolet light is emitted during its formation C) exothermic because ultraviolet light is absorbed during its formation D) endothermic because ultraviolet light is absorbed during its formation

What coefficients balance the following equation? ____ P4 (s)+ ____ H2 (g)→ ____ PH3 (g)

A) 4, 2, 3 B) 1, 6, 4 C) 1, 4, 4 D) 2, 10, 8 A) 4, 2, 3 B) 1, 6, 4 C) 1, 4, 4 D) 2, 10, 8

Small samples of oxygen gas needed in the laboratory can be generated by any number of simple chemical reactions, such as 2 KCl O3 (s)→ 2 KCl (s)+ 3 O2 (g) What mass of oxygen (in grams)is produced when 122.6 g of KCl O3 (formula mass = 122.6 amu)takes part in this reaction?

A) 32.00 grams B) 48.00 grams C) 96.00 grams D) More information is needed. A) 32.00 grams B) 48.00 grams C) 96.00 grams D) More information is needed.

Exam 17: How Chemicals React

Explore all topics

The reactants shown schematically below represent iron oxide, Fe₂O₃ and carbon monoxide, CO. Which of the following is the correct full balanced chemical equation for what is depicted?

(Multiple Choice)

4.9/5

(75)

Question 41

How many bonds between nitrogen and hydrogen are formed if you react nitrogen with hydrogen according to the following reaction? N₂ + 3H₂ → 2 NH₃

(Multiple Choice)

4.8/5

(79)

Question 42

Some reactions are more sluggish than others. To speed up these reactions and save energy a(n)________ is sometimes added.

(Multiple Choice)

4.8/5

(73)

Question 43

What is the number of grams of CO₂ produced if you combust 0.50 mole of CH₄ according to the following balanced equation? CH₄ + 2 O₂ → CO₂ + 2 H₂O

(Multiple Choice)

4.8/5

(78)

Question 44

How many grams of water can be produced by the combination of 8 grams of oxygen and 8 grams of hydrogen?

(Multiple Choice)

4.9/5

(76)

Question 45

Bond energies increase in going from C-N (lowest)to C-O to C-F (highest). Explain this trend based upon the atomic sizes of these atoms as deduced from their positions in the periodic table.

(Multiple Choice)

4.7/5

(79)

Question 46

A catalytic converter increases the amount of carbon dioxide emitted by an automobile. Is this good news or bad news?

(Multiple Choice)

4.7/5

(78)

Question 47

The ________ is what needs to be overcome in a reaction so that it can proceed to the products.

(Multiple Choice)

4.7/5

(72)

Question 48

How does formula mass differ from atomic mass?

(Multiple Choice)

4.8/5

(78)

Question 49

If it takes 20 beryllium atoms to equal the mass of two krypton atoms, what is the relative mass of beryllium compared to krypton?

(Multiple Choice)

4.9/5

(74)

Question 50

What is the mass of an oxygen atom, O, in atomic mass units?

(Multiple Choice)

4.7/5

(81)

Question 51

Which of the following statements accurately describes the action of ozone?

(Multiple Choice)

4.9/5

(97)

Question 52

What is the number of molecules of O₂ consumed if you combust one mole of CH₄ according to the following balanced equation? CH₄ + 2 O₂ → CO₂ + 2 H₂O

(Multiple Choice)

5.0/5

(88)

Question 53

If the relative mass of a pingpong ball is 1/20 that of a golf ball, how many golf balls would you need to equal the mass of 200 pingpong balls?

(Multiple Choice)

4.8/5

(76)

Question 54

For the above energy profiles, which reaction has the lowest activation energy?

(Multiple Choice)

4.9/5

(72)

Question 55

Is the synthesis of ozone, O₃, from oxygen, O₂, an example of an exothermic or endothermic reaction?

(Multiple Choice)

4.9/5

(87)

Question 56

According to the following balanced chemical equation, if you want to generate two moles of H₂O, how many moles of O₂ do you need? 2 H₂ + O₂ → 2 H₂O

(Multiple Choice)

4.8/5

(86)

Question 57

What coefficients balance the following equation? P₄ (s)+ H₂ (g)→ PH₃ (g)

(Multiple Choice)

4.8/5

(83)

Question 58

What is the mass of an oxygen atom, O, in grams?

(Multiple Choice)

4.9/5

(67)

Question 59

Small samples of oxygen gas needed in the laboratory can be generated by any number of simple chemical reactions, such as 2 KCl O₃ (s)→ 2 KCl (s)+ 3 O₂ (g) What mass of oxygen (in grams)is produced when 122.6 g of KCl O₃ (formula mass = 122.6 amu)takes part in this reaction?

(Multiple Choice)

5.0/5

(81)

Question 60

Showing 41 - 60 of 118

Exam 17: How Chemicals React

The reactants shown schematically below represent iron oxide, Fe2O3 and carbon monoxide, CO. Which of the following is the correct full balanced chemical equation for what is depicted?

How many bonds between nitrogen and hydrogen are formed if you react nitrogen with hydrogen according to the following reaction? N2 + 3H2 → 2 NH3

Some reactions are more sluggish than others. To speed up these reactions and save energy a(n)________ is sometimes added.

What is the number of grams of CO2 produced if you combust 0.50 mole of CH4 according to the following balanced equation? CH4 + 2 O2 → CO2 + 2 H2O

How many grams of water can be produced by the combination of 8 grams of oxygen and 8 grams of hydrogen?

Bond energies increase in going from C-N (lowest)to C-O to C-F (highest). Explain this trend based upon the atomic sizes of these atoms as deduced from their positions in the periodic table.

A catalytic converter increases the amount of carbon dioxide emitted by an automobile. Is this good news or bad news?

The ________ is what needs to be overcome in a reaction so that it can proceed to the products.

How does formula mass differ from atomic mass?

If it takes 20 beryllium atoms to equal the mass of two krypton atoms, what is the relative mass of beryllium compared to krypton?

What is the mass of an oxygen atom, O, in atomic mass units?

Which of the following statements accurately describes the action of ozone?

What is the number of molecules of O2 consumed if you combust one mole of CH4 according to the following balanced equation? CH4 + 2 O2 → CO2 + 2 H2O

If the relative mass of a pingpong ball is 1/20 that of a golf ball, how many golf balls would you need to equal the mass of 200 pingpong balls?

For the above energy profiles, which reaction has the lowest activation energy?

Is the synthesis of ozone, O3, from oxygen, O2, an example of an exothermic or endothermic reaction?

According to the following balanced chemical equation, if you want to generate two moles of H2O, how many moles of O2 do you need? 2 H2 + O2 → 2 H2O

What coefficients balance the following equation? ____ P4 (s)+ ____ H2 (g)→ ____ PH3 (g)

What is the mass of an oxygen atom, O, in grams?

Small samples of oxygen gas needed in the laboratory can be generated by any number of simple chemical reactions, such as 2 KCl O3 (s)→ 2 KCl (s)+ 3 O2 (g) What mass of oxygen (in grams)is produced when 122.6 g of KCl O3 (formula mass = 122.6 amu)takes part in this reaction?

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Timereading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: the Nature of Science

Filters

The reactants shown schematically below represent iron oxide, Fe₂O₃ and carbon monoxide, CO. Which of the following is the correct full balanced chemical equation for what is depicted?

How many bonds between nitrogen and hydrogen are formed if you react nitrogen with hydrogen according to the following reaction? N₂ + 3H₂ → 2 NH₃

What is the number of grams of CO₂ produced if you combust 0.50 mole of CH₄ according to the following balanced equation? CH₄ + 2 O₂ → CO₂ + 2 H₂O

What is the number of molecules of O₂ consumed if you combust one mole of CH₄ according to the following balanced equation? CH₄ + 2 O₂ → CO₂ + 2 H₂O

Is the synthesis of ozone, O₃, from oxygen, O₂, an example of an exothermic or endothermic reaction?

According to the following balanced chemical equation, if you want to generate two moles of H₂O, how many moles of O₂ do you need? 2 H₂ + O₂ → 2 H₂O

What coefficients balance the following equation? P₄ (s)+ H₂ (g)→ PH₃ (g)

Small samples of oxygen gas needed in the laboratory can be generated by any number of simple chemical reactions, such as 2 KCl O₃ (s)→ 2 KCl (s)+ 3 O₂ (g) What mass of oxygen (in grams)is produced when 122.6 g of KCl O₃ (formula mass = 122.6 amu)takes part in this reaction?