Question 1

What is the minimum mass of sulfur dioxide necessary to produce 200.g of sulfuric acid in the following reaction?
2SO2 + O2 + 2H2O $\rarr$2H2SO4

Accepted Answer

Question 2

Calculate the volume of 0.15 mole of Br2.The density of Br2 is 3.12 g/mL.

Accepted Answer

Question 3

Oxidation of a hydrocarbon gave a product composed of carbon, hydrogen, and oxygen.The product that was purified and sent off for elemental analysis giving the following mass percents: 68.85% C and 4.95% H.Determine the empirical formula of this compound.

Accepted Answer

The answer of Oxidation of a hydrocarbon gave a product...

Question 4

There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true?

Accepted Answer

A) Chlorine contains almost exclusively   with very little   Cl. 
B) Chlorine contains more   Cl than   Cl. 
C) Chlorine contains roughly equal amounts of   Cl and   Cl. 
D) Chlorine contains more   Cl than   Cl. 
E) Chlorine contains almost exclusively of   Cl, with very little   Cl. 
A) Chlorine contains almost exclusively   with very little   Cl. 
B) Chlorine contains more   Cl than   Cl. 
C) Chlorine contains roughly equal amounts of   Cl and   Cl. 
D) Chlorine contains more   Cl than   Cl. 
E) Chlorine contains almost exclusively of   Cl, with very little   Cl.

Question 5

What is the molar mass of acetaminophen, C8H9NO2?

Accepted Answer

A) 151.16 g/mol 
B) 43.03 g/mol 
C) 67.09 g/mol 
D) 143.10 g/mol 
E) 135.16 g/mol 
A) 151.16 g/mol 
B) 43.03 g/mol 
C) 67.09 g/mol 
D) 143.10 g/mol 
E) 135.16 g/mol

Question 6

Which one of the following does not represent 1.000 mol of the indicated substance?

Accepted Answer

A) 6.022 × 1023 C atoms 
B) 26.00 g Fe 
C) 12.01 g C 
D) 65.39 g Zn 
E) 6.022 × 1023 Fe atoms 
A) 6.022 × 1023 C atoms 
B) 26.00 g Fe 
C) 12.01 g C 
D) 65.39 g Zn 
E) 6.022 × 1023 Fe atoms

Question 7

Define a mole.

Accepted Answer

An Avogadro's number

Question 8

Ferrocene, Fe(C5H5)2(s), can be prepared by reacting 3.0 g of FeCl2(s)with an equal mass of cyclopentadiene, C5H6(l), and an excess of KOH, as shown in the following reaction
FeCl2 + 2C5H6 + 2KOH $\rarr$ FeC10H10 + 2H2O
A.What is the limiting reagent in this procedure?
B.Based on your answer to part A, what mass of Fe(C5H5)2 could theoretically be formed?
C.A student who carried out this reaction obtained 2.7 g of ferrocene.What was the percent yield for this reaction?

Accepted Answer

A.C₅H₆ is li

Question 9

A chemistry student determined the empirical formula for titanium sulfide (TixSy).To do so, she reacted titanium with excess sulfur in a crucible, and recorded the following data:   What is the empirical formula of titanium sulfide?

Accepted Answer

Question 10

Determine the number of moles of water produced by the reaction of 155 g of ammonia and 356 g of oxygen.
4NH3 + 5O2 $\rarr$4NO + 6H2O

Accepted Answer

Question 11

How many moles of HCl are represented by 1.0 × 1019 HCl molecules?

Accepted Answer

A) 1.7 × 10-5 mol 
B) 1.5 × 10-3 mol 
C) 1.0 × 1019 mol 
D) 37 mol 
E) 6.0 × 104 mol 
A) 1.7 × 10-5 mol 
B) 1.5 × 10-3 mol 
C) 1.0 × 1019 mol 
D) 37 mol 
E) 6.0 × 104 mol

Question 12

What is the coefficient of H2SO4 when the following equation is properly balanced?
 ___ Ca3(PO4)2 + ___ H2SO4 $\rarr$ ___ CaSO4 + ___ H3PO4

Accepted Answer

A) 3 
B) 8 
C) 10 
D) 11 
E) none of these 
A) 3 
B) 8 
C) 10 
D) 11 
E) none of these

Question 13

How many moles of NH3 are there in 77.5 g of NH3?

Accepted Answer

A) 0.220 mol 
B) 4.55 mol 
C) 14.0 mol 
D) 1.31 × 103 mol 
E) None of the above. 
A) 0.220 mol 
B) 4.55 mol 
C) 14.0 mol 
D) 1.31 × 103 mol 
E) None of the above.

Question 14

Vanadium(V)oxide reacts with calcium according to the chemical equation below.When 10.0 moles of V2O5 are mixed with 10.0 moles of Ca, which is the limiting reagent? 
V2O5(s)+ 5Ca(l)$\rarr$ 2V(l)+ 5CaO(s)

Accepted Answer

A) V2O5 
B) Ca 
C) V 
D) CaO 
E) No reagent is limiting. 
A) V2O5 
B) Ca 
C) V 
D) CaO 
E) No reagent is limiting.

What is the minimum mass of sulfur dioxide necessary to produce 200.g of sulfuric acid in the following reaction? 2SO₂ + O₂ + 2H₂O $\rarr$ 2H₂SO₄

Calculate the volume of 0.15 mole of Br₂.The density of Br₂ is 3.12 g/mL.

Oxidation of a hydrocarbon gave a product composed of carbon, hydrogen, and oxygen.The product that was purified and sent off for elemental analysis giving the following mass percents: 68.85% C and 4.95% H.Determine the empirical formula of this compound.

There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true?

What is the molar mass of acetaminophen, C₈H₉NO₂?

Which one of the following does not represent 1.000 mol of the indicated substance?

Define a mole.

A chemistry student determined the empirical formula for titanium sulfide (Ti_xS_y).To do so, she reacted titanium with excess sulfur in a crucible, and recorded the following data: What is the empirical formula of titanium sulfide?

Determine the number of moles of water produced by the reaction of 155 g of ammonia and 356 g of oxygen. 4NH₃ + 5O₂ $\rarr$ 4NO + 6H₂O

How many moles of HCl are represented by 1.0 × 10¹⁹ HCl molecules?

What is the coefficient of H₂SO₄ when the following equation is properly balanced? _ Ca₃(PO₄)₂ + _ H₂SO₄ $\rarr$ _ CaSO₄ + _ H₃PO₄

How many moles of NH₃ are there in 77.5 g of NH₃?

Vanadium(V)oxide reacts with calcium according to the chemical equation below.When 10.0 moles of V₂O₅ are mixed with 10.0 moles of Ca, which is the limiting reagent? V₂O₅(s)+ 5Ca(l) $\rarr$ 2V(l)+ 5CaO(s)

Chemistry: the Study of Change

Atoms, Molecules, and Ions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

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Exam 3: Mass Relationships in Chemical Reactions

What is the minimum mass of sulfur dioxide necessary to produce 200.g of sulfuric acid in the following reaction? 2SO2 + O2 + 2H2O →\rarr→ 2H2SO4

Calculate the volume of 0.15 mole of Br2.The density of Br2 is 3.12 g/mL.

Oxidation of a hydrocarbon gave a product composed of carbon, hydrogen, and oxygen.The product that was purified and sent off for elemental analysis giving the following mass percents: 68.85% C and 4.95% H.Determine the empirical formula of this compound.

There are two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903.Given that the average atomic mass of a chlorine atom is 35.45 amu, which of the following statements is true?

What is the molar mass of acetaminophen, C8H9NO2?

Which one of the following does not represent 1.000 mol of the indicated substance?

Define a mole.

A chemistry student determined the empirical formula for titanium sulfide (TixSy).To do so, she reacted titanium with excess sulfur in a crucible, and recorded the following data: What is the empirical formula of titanium sulfide?

Determine the number of moles of water produced by the reaction of 155 g of ammonia and 356 g of oxygen. 4NH3 + 5O2 →\rarr→ 4NO + 6H2O

How many moles of HCl are represented by 1.0 × 1019 HCl molecules?

What is the coefficient of H2SO4 when the following equation is properly balanced? ___ Ca3(PO4)2 + ___ H2SO4 →\rarr→ ___ CaSO4 + ___ H3PO4

How many moles of NH3 are there in 77.5 g of NH3?

Vanadium(V)oxide reacts with calcium according to the chemical equation below.When 10.0 moles of V2O5 are mixed with 10.0 moles of Ca, which is the limiting reagent? V2O5(s)+ 5Ca(l) →\rarr→ 2V(l)+ 5CaO(s)

Chemistry: the Study of Change

Atoms, Molecules, and Ions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

What is the minimum mass of sulfur dioxide necessary to produce 200.g of sulfuric acid in the following reaction? 2SO₂ + O₂ + 2H₂O $\rarr$ 2H₂SO₄

Calculate the volume of 0.15 mole of Br₂.The density of Br₂ is 3.12 g/mL.

What is the molar mass of acetaminophen, C₈H₉NO₂?

A chemistry student determined the empirical formula for titanium sulfide (Ti_xS_y).To do so, she reacted titanium with excess sulfur in a crucible, and recorded the following data: What is the empirical formula of titanium sulfide?

Determine the number of moles of water produced by the reaction of 155 g of ammonia and 356 g of oxygen. 4NH₃ + 5O₂ $\rarr$ 4NO + 6H₂O

How many moles of HCl are represented by 1.0 × 10¹⁹ HCl molecules?

What is the coefficient of H₂SO₄ when the following equation is properly balanced? _ Ca₃(PO₄)₂ + _ H₂SO₄ $\rarr$ _ CaSO₄ + _ H₃PO₄

How many moles of NH₃ are there in 77.5 g of NH₃?

Vanadium(V)oxide reacts with calcium according to the chemical equation below.When 10.0 moles of V₂O₅ are mixed with 10.0 moles of Ca, which is the limiting reagent? V₂O₅(s)+ 5Ca(l) $\rarr$ 2V(l)+ 5CaO(s)