The reaction of HCl with NaOH is represented by the equation HCl(aq)+ NaOH(aq)$\to$ NaCl(aq)+ H2O(l) What volume of 0.686 M HCl is required to titrate 42.8 mL of 0.334 M NaOH?

A) 9.81 mL B) 1.46 mL C) 20.8 mL D) 42.8 mL E) 87.9 mL A) 9.81 mL B) 1.46 mL C) 20.8 mL D) 42.8 mL E) 87.9 mL

A 2.841 g sample of a hydrocarbon is burned in an excess of dioxygen,producing 7.794 g CO2 and water.What mass of hydrogen is contained in the original sample?

A) 0.7140 g B) 4.953 g C) 10.64 g D) 2.826 g E) 1.421 g A) 0.7140 g B) 4.953 g C) 10.64 g D) 2.826 g E) 1.421 g

The complete combustion of 0.32 moles of propane,C3H8,will

A) consume 0.32 mol O2 and produce 0.32 mol CO2. B) consume 0.32 mol O2 and produce 0.64 mol CO2. C) consume 1.6 mol O2 and produce 0.96 mol CO2. D) consume 1.6 mol O2 and produce 4.8 mol CO2. E) consume 1.6 mol O2 and produce 1.3 mol CO2. A) consume 0.32 mol O2 and produce 0.32 mol CO2. B) consume 0.32 mol O2 and produce 0.64 mol CO2. C) consume 1.6 mol O2 and produce 0.96 mol CO2. D) consume 1.6 mol O2 and produce 4.8 mol CO2. E) consume 1.6 mol O2 and produce 1.3 mol CO2.

Consider the fermentation reaction of glucose: C6H12O6 $\to$2C2H5OH + 2CO2 A 1.00-mol sample of C6H12O6 was placed in a vat with 100 g of yeast.If 67.8 g of C2H5OH was obtained,what was the percent yield of C2H5OH?

A) 73.6 % B) 36.8 % C) 67.8 % D) 100 % E) none of these A) 73.6 % B) 36.8 % C) 67.8 % D) 100 % E) none of these

If 15.0 g N2 and 2.00 g H2 react to produce 1.38 g NH3,what is the percent yield of the reaction? N2(g)+ 3 H2(g)$\to$ 2 NH3(g)

A) 7.57% B) 12.2% C) 8.12% D) 15.1% E) 8.17% A) 7.57% B) 12.2% C) 8.12% D) 15.1% E) 8.17%

Exam 5: Stoichiometry: Quantitative Information About Chemical Reactions

Naphthalene,a hydrocarbon,has an approximate molar mass of 128 g/mole.If the combustion of 0.6400 g naphthalene produces 0.3599 g H₂O and 2.1977 g CO₂,what is the molecular formula of this compound?

(Multiple Choice)

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Question 61

The reaction of HCl with NaOH is represented by the equation HCl(aq)+ NaOH(aq) $\to$ NaCl(aq)+ H₂O(l) What volume of 0.686 M HCl is required to titrate 42.8 mL of 0.334 M NaOH?

(Multiple Choice)

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Question 62

The commercial production of phosphoric acid,H₃PO₄,can be represented by the equation $The commercial production of phosphoric acid,H3PO4,can be represented by the equation The molar mass for each reactant is shown \underline{\text{ below}} the reactant,and the mass of each reactant for this problem is given \underline{\text{ above. }} Which substance is the limiting reactant?$ The molar mass for each reactant is shown $\underline{\text{ below}}$ the reactant,and the mass of each reactant for this problem is given $\underline{\text{ above. }}$ Which substance is the limiting reactant?

(Multiple Choice)

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Question 63

A 2.841 g sample of a hydrocarbon is burned in an excess of dioxygen,producing 7.794 g CO₂and water.What mass of hydrogen is contained in the original sample?

(Multiple Choice)

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Question 64

Nitric oxide is made from the oxidation of ammonia.What mass of nitric oxide can be made from the reaction of 8.00 g NH₃ with 17.0 g O₂? 4 NH₃(g)+ 5 O₂(g) $\to$ 4 NO(g)+ 6 H₂O(g)

(Multiple Choice)

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Question 65

Soft drink bottles are made of polyethylene terephthalate (PET),a polymer composed of carbon,hydrogen,and oxygen.If 1.9022 g PET is burned in oxygen it produces 0.6585 g H₂O and 4.0216 g CO₂.What is the empirical formula of PET?

(Multiple Choice)

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Question 66

How many moles of sodium bromide can be produced from the reaction of 1.03 moles of sodium with 0.650 moles of bromine gas? 2 Na(s)+ Br₂(g) $\to$ 2 NaBr(s)

(Multiple Choice)

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Question 67

In combustion analysis,the gases produced by the combustion of a hydrocarbon are passed through a tube containing finely divided NaOH supported on asbestos.The purpose of the NaOH is to absorb ________ produced by the combustion reaction.

(Short Answer)

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Question 68

If 0.1800 g of impure soda ash (Na₂CO₃)is titrated with 15.66 mL of 0.1082 M HCl,what is the percent purity of the soda ash? Na₂CO₃(aq)+ 2 HCl(aq) $\to$ 2 NaCl(aq)+ H₂O( $If 0.1800 g of impure soda ash (Na2CO3)is titrated with 15.66 mL of 0.1082 M HCl,what is the percent purity of the soda ash? Na2CO3(aq)+ 2 HCl(aq) \to 2 NaCl(aq)+ H2O( )+ CO2(g)$ )+ CO₂(g)

(Multiple Choice)

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Question 69

Chlorine was passed over 2.02 g of heated titanium,and 6.50 g of a chloride-containing compound of Ti was obtained.What is the empirical formula of the chloride-containing compound?

(Multiple Choice)

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Question 70

Polyethylene is a polymer consisting of only carbon and hydrogen.If 2.300 g of the polymer is burned in oxygen it produces 2.955 g H₂O and 7.217 g CO₂.What is the empirical formula of polyethylene?

(Multiple Choice)

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Question 71

The complete combustion of 0.32 moles of propane,C₃H₈,will

(Multiple Choice)

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Question 72

The reaction of 5.07 g N₂ with 0.722 g H₂ produces 1.27 g NH₃.The percent yield of this reaction is ________.

(Short Answer)

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Question 73

Consider the fermentation reaction of glucose: C₆H₁₂O₆ $\to$ 2C₂H₅OH + 2CO₂ A 1.00-mol sample of C₆H₁₂O₆was placed in a vat with 100 g of yeast.If 67.8 g of C₂H₅OH was obtained,what was the percent yield of C₂H₅OH?

(Multiple Choice)

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Question 74

If 15.0 g N₂ and 2.00 g H₂ react to produce 1.38 g NH₃,what is the percent yield of the reaction? N₂(g)+ 3 H₂(g) $\to$ 2 NH₃(g)

(Multiple Choice)

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Question 75

The pH of purified water (or of a neutral solution)is _____.

(Short Answer)

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Question 76

Showing 61 - 76 of 76

Naphthalene,a hydrocarbon,has an approximate molar mass of 128 g/mole.If the combustion of 0.6400 g naphthalene produces 0.3599 g H₂O and 2.1977 g CO₂,what is the molecular formula of this compound?

The reaction of HCl with NaOH is represented by the equation HCl(aq)+ NaOH(aq) $\to$ NaCl(aq)+ H₂O(l) What volume of 0.686 M HCl is required to titrate 42.8 mL of 0.334 M NaOH?

A 2.841 g sample of a hydrocarbon is burned in an excess of dioxygen,producing 7.794 g CO₂and water.What mass of hydrogen is contained in the original sample?

Nitric oxide is made from the oxidation of ammonia.What mass of nitric oxide can be made from the reaction of 8.00 g NH₃ with 17.0 g O₂? 4 NH₃(g)+ 5 O₂(g) $\to$ 4 NO(g)+ 6 H₂O(g)

Soft drink bottles are made of polyethylene terephthalate (PET),a polymer composed of carbon,hydrogen,and oxygen.If 1.9022 g PET is burned in oxygen it produces 0.6585 g H₂O and 4.0216 g CO₂.What is the empirical formula of PET?

How many moles of sodium bromide can be produced from the reaction of 1.03 moles of sodium with 0.650 moles of bromine gas? 2 Na(s)+ Br₂(g) $\to$ 2 NaBr(s)

In combustion analysis,the gases produced by the combustion of a hydrocarbon are passed through a tube containing finely divided NaOH supported on asbestos.The purpose of the NaOH is to absorb ________ produced by the combustion reaction.

Chlorine was passed over 2.02 g of heated titanium,and 6.50 g of a chloride-containing compound of Ti was obtained.What is the empirical formula of the chloride-containing compound?

Polyethylene is a polymer consisting of only carbon and hydrogen.If 2.300 g of the polymer is burned in oxygen it produces 2.955 g H₂O and 7.217 g CO₂.What is the empirical formula of polyethylene?

The complete combustion of 0.32 moles of propane,C₃H₈,will

The reaction of 5.07 g N₂ with 0.722 g H₂ produces 1.27 g NH₃.The percent yield of this reaction is ________.

Consider the fermentation reaction of glucose: C₆H₁₂O₆ $\to$ 2C₂H₅OH + 2CO₂ A 1.00-mol sample of C₆H₁₂O₆was placed in a vat with 100 g of yeast.If 67.8 g of C₂H₅OH was obtained,what was the percent yield of C₂H₅OH?

If 15.0 g N₂ and 2.00 g H₂ react to produce 1.38 g NH₃,what is the percent yield of the reaction? N₂(g)+ 3 H₂(g) $\to$ 2 NH₃(g)

The pH of purified water (or of a neutral solution)is _____.

Basic Concepts of Chemistry

Mathlets Review: The Tools of Quantitative Chemistry

Atoms, molecules, and Ions

Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms

The Structure of Atoms and Periodic Trends

Bonding and Molecular Structure

Bonding and Molecular Structure: Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

The Chemistry of Solids

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Reactivity: Chemical Equilibria

The Chemistry of Acids and Bases

Principles of Reactivity: Other Aspects of Aqueous Equilibria

Entropy and Free Energy

Principles of Reactivity: Electron Transfer Reactions

Environmental Chemistry Earths Environment,energy,and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Carbon: Not Just Another Element

Biochemistry

Nuclear Chemistry

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Exam 5: Stoichiometry: Quantitative Information About Chemical Reactions

Naphthalene,a hydrocarbon,has an approximate molar mass of 128 g/mole.If the combustion of 0.6400 g naphthalene produces 0.3599 g H2O and 2.1977 g CO2,what is the molecular formula of this compound?

The reaction of HCl with NaOH is represented by the equation HCl(aq)+ NaOH(aq) →\to→ NaCl(aq)+ H2O(l) What volume of 0.686 M HCl is required to titrate 42.8 mL of 0.334 M NaOH?

A 2.841 g sample of a hydrocarbon is burned in an excess of dioxygen,producing 7.794 g CO2 and water.What mass of hydrogen is contained in the original sample?

Nitric oxide is made from the oxidation of ammonia.What mass of nitric oxide can be made from the reaction of 8.00 g NH3 with 17.0 g O2? 4 NH3(g)+ 5 O2(g) →\to→ 4 NO(g)+ 6 H2O(g)

Soft drink bottles are made of polyethylene terephthalate (PET),a polymer composed of carbon,hydrogen,and oxygen.If 1.9022 g PET is burned in oxygen it produces 0.6585 g H2O and 4.0216 g CO2.What is the empirical formula of PET?

How many moles of sodium bromide can be produced from the reaction of 1.03 moles of sodium with 0.650 moles of bromine gas? 2 Na(s)+ Br2(g) →\to→ 2 NaBr(s)

In combustion analysis,the gases produced by the combustion of a hydrocarbon are passed through a tube containing finely divided NaOH supported on asbestos.The purpose of the NaOH is to absorb ________ produced by the combustion reaction.

If 0.1800 g of impure soda ash (Na2CO3)is titrated with 15.66 mL of 0.1082 M HCl,what is the percent purity of the soda ash? Na2CO3(aq)+ 2 HCl(aq) →\to→ 2 NaCl(aq)+ H2O( )+ CO2(g)

Chlorine was passed over 2.02 g of heated titanium,and 6.50 g of a chloride-containing compound of Ti was obtained.What is the empirical formula of the chloride-containing compound?

Polyethylene is a polymer consisting of only carbon and hydrogen.If 2.300 g of the polymer is burned in oxygen it produces 2.955 g H2O and 7.217 g CO2.What is the empirical formula of polyethylene?

The complete combustion of 0.32 moles of propane,C3H8,will

The reaction of 5.07 g N2 with 0.722 g H2 produces 1.27 g NH3.The percent yield of this reaction is ________.

Consider the fermentation reaction of glucose: C6H12O6 →\to→ 2C2H5OH + 2CO2 A 1.00-mol sample of C6H12O6 was placed in a vat with 100 g of yeast.If 67.8 g of C2H5OH was obtained,what was the percent yield of C2H5OH?

If 15.0 g N2 and 2.00 g H2 react to produce 1.38 g NH3,what is the percent yield of the reaction? N2(g)+ 3 H2(g) →\to→ 2 NH3(g)

The pH of purified water (or of a neutral solution)is _____.

Basic Concepts of Chemistry

Mathlets Review: The Tools of Quantitative Chemistry

Atoms, molecules, and Ions

Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms

The Structure of Atoms and Periodic Trends

Bonding and Molecular Structure

Bonding and Molecular Structure: Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

The Chemistry of Solids

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Reactivity: Chemical Equilibria

The Chemistry of Acids and Bases

Principles of Reactivity: Other Aspects of Aqueous Equilibria

Entropy and Free Energy

Principles of Reactivity: Electron Transfer Reactions

Environmental Chemistry Earths Environment,energy,and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Carbon: Not Just Another Element

Biochemistry

Nuclear Chemistry

Filters

Naphthalene,a hydrocarbon,has an approximate molar mass of 128 g/mole.If the combustion of 0.6400 g naphthalene produces 0.3599 g H₂O and 2.1977 g CO₂,what is the molecular formula of this compound?

The reaction of HCl with NaOH is represented by the equation HCl(aq)+ NaOH(aq) $\to$ NaCl(aq)+ H₂O(l) What volume of 0.686 M HCl is required to titrate 42.8 mL of 0.334 M NaOH?

A 2.841 g sample of a hydrocarbon is burned in an excess of dioxygen,producing 7.794 g CO₂and water.What mass of hydrogen is contained in the original sample?

Nitric oxide is made from the oxidation of ammonia.What mass of nitric oxide can be made from the reaction of 8.00 g NH₃ with 17.0 g O₂? 4 NH₃(g)+ 5 O₂(g) $\to$ 4 NO(g)+ 6 H₂O(g)

Soft drink bottles are made of polyethylene terephthalate (PET),a polymer composed of carbon,hydrogen,and oxygen.If 1.9022 g PET is burned in oxygen it produces 0.6585 g H₂O and 4.0216 g CO₂.What is the empirical formula of PET?

How many moles of sodium bromide can be produced from the reaction of 1.03 moles of sodium with 0.650 moles of bromine gas? 2 Na(s)+ Br₂(g) $\to$ 2 NaBr(s)

Polyethylene is a polymer consisting of only carbon and hydrogen.If 2.300 g of the polymer is burned in oxygen it produces 2.955 g H₂O and 7.217 g CO₂.What is the empirical formula of polyethylene?

The complete combustion of 0.32 moles of propane,C₃H₈,will

The reaction of 5.07 g N₂ with 0.722 g H₂ produces 1.27 g NH₃.The percent yield of this reaction is ________.

Consider the fermentation reaction of glucose: C₆H₁₂O₆ $\to$ 2C₂H₅OH + 2CO₂ A 1.00-mol sample of C₆H₁₂O₆was placed in a vat with 100 g of yeast.If 67.8 g of C₂H₅OH was obtained,what was the percent yield of C₂H₅OH?

If 15.0 g N₂ and 2.00 g H₂ react to produce 1.38 g NH₃,what is the percent yield of the reaction? N₂(g)+ 3 H₂(g) $\to$ 2 NH₃(g)