Aspirin (C9H8O4) is produced by the reaction of salicylic acid (M = 138.1 g/mol) and acetic anhydride (M = 102.1 g/mol). C7H6O3(s) + C4H6O3( $\ell$ ) ? C9H8O4(s) + C2H4O2( $\ell$ ) If you react 2.00 g C7H6O3 with 1.60 g C4H6O3, what mass of aspirin (M = 180.2 g/mol) can theoretically be obtained?

A) 0.40 g B) 2.61 g C) 2.82 g D) 1.53 g E) 3.60 g A) 0.40 g B) 2.61 g C) 2.82 g D) 1.53 g E) 3.60 g

A 2.288 g sample of a hydrocarbon is burned in an excess of dioxygen, producing 6.277 g CO2 and 5.139 g H2O. What is the empirical formula of the hydrocarbon?

A) CH4 B) CH2 C) C2H3 D) CH3 E) CH A) CH4 B) CH2 C) C2H3 D) CH3 E) CH

An aqueous nitric acid solution has a pH of 2.15. What mass of nitric acid, HNO3, is present in 20.0 L of this solution?

A) 0.11 g B) 0.022 g C) 3.7 g D) 6.8 g E) 8.9 g A) 0.11 g B) 0.022 g C) 3.7 g D) 6.8 g E) 8.9 g

Consider the fermentation reaction of glucose: C6H12O6 → 2C2H5OH + 2CO2 A 1.00-mol sample of C6H12O6 was placed in a vat with 100 g of yeast. If 38.5 g of C2H5OH was obtained, what was the percent yield of C2H5OH?

A) 41.8 % B) 20.9 % C) 38.5 % D) 100 % E) none of these A) 41.8 % B) 20.9 % C) 38.5 % D) 100 % E) none of these

The complete combustion of 0.31 moles of propane, C3H8, will

A) consume 0.31 mol O2 and produce 0.31 mol CO2. B) consume 0.31 mol O2 and produce 0.62 mol CO2. C) consume 1.6 mol O2 and produce 0.93 mol CO2. D) consume 1.6 mol O2 and produce 4.7 mol CO2. E) consume 1.6 mol O2 and produce 1.2 mol CO2. A) consume 0.31 mol O2 and produce 0.31 mol CO2. B) consume 0.31 mol O2 and produce 0.62 mol CO2. C) consume 1.6 mol O2 and produce 0.93 mol CO2. D) consume 1.6 mol O2 and produce 4.7 mol CO2. E) consume 1.6 mol O2 and produce 1.2 mol CO2.

The combustion of 0.0272 mole of a hydrocarbon produces 1.9609 g H2O and 3.5927 g CO2. What is the molar mass of the hydrocarbon?

A) 16.0 g/mol B) 30.1 g/mol C) 44.1 g/mol D) 72.2 g/mol E) 92.1 g/mol A) 16.0 g/mol B) 30.1 g/mol C) 44.1 g/mol D) 72.2 g/mol E) 92.1 g/mol

Zn reacts with hydrochloric acid. Zn(s) + 2 HCl(aq) ? ZnCl2(aq) + H2(g) What volume of 3.05 M HCl(aq) will react with 25.0 g Zn(s)?

A) 0.251 L B) 4.01 L C) 0.125 L D) 0.0627 L E) 2.33 L A) 0.251 L B) 4.01 L C) 0.125 L D) 0.0627 L E) 2.33 L

The commercial production of phosphoric acid, H3PO4, can be represented by the equation \[\begin{array} { l l l l l } 1500 \mathrm {~g} & 298 \mathrm {~g} & 302 \mathrm {~g} & 1000 \mathrm {~g} & 298 \mathrm {~g} \\ \mathrm { Ca } _ { 3 } \left( \mathrm { PO } _ { 4 } \right) _ { 2 } + & 3 \mathrm { SiO } _ { 2 } + & 5 \mathrm { C } + & 5 \mathrm { O } _ { 2 } + & 3 \mathrm { H } _ { 2 } \mathrm { O } \\ 310 \mathrm {~g} / \mathrm { mol } & 60.1 \mathrm {~g} / \mathrm { mol } &12.0 \mathrm {~g} / \mathrm { mol } & 32.0 \mathrm {~g} / \mathrm { mol } & 18.0 \mathrm {~g} / \mathrm { mol } \end{array} \rightarrow 3 \mathrm { CaSiO } _ { 3 } + 5 \mathrm { CO } _ { 2 } + 2 \mathrm { H } _ { 3 } \mathrm { PO } _ { 4 }\] The molar mass for each reactant is shown below the reactant, and the mass of each reactant for this problem is given above. Which substance is the limiting reactant?

A) H2O B) C C) O2 D) Ca3(PO4)2 E) SiO2 A) H2O B) C C) O2 D) Ca3(PO4)2 E) SiO2

Potassium hydrogen carbonate decomposes according to the reaction below: 2 KHCO3(s) → K2CO3(s) + CO2(g) + H2O(l) How many moles of potassium carbonate are produced if 421 g of potassium hydrogen carbonate is heated?

A) 2.10 mol B) 3.05 mol C) 17.8 mol D) 211 mol E) 4.21 mol A) 2.10 mol B) 3.05 mol C) 17.8 mol D) 211 mol E) 4.21 mol

A 1.850 g mixture of SrCO3 and SrO is heated. The SrCO3 decomposes to SrO and CO2. What was the mass percentage of SrCO3 in the mixture if the mass after heating is 1.445 g?

A) 26.6% B) 21.9% C) 13.7% D) 73.4% E) 78.1% A) 26.6% B) 21.9% C) 13.7% D) 73.4% E) 78.1%

Exam 5: Stoichiometry: Quantitative Information About Chemical Reactions

How many moles of Mg₃P₂(s) can be produced from the reaction of 0.14 mol Mg(s) with 0.020 mol P₄(s)? 6 Mg(s) + P₄(s) → 2 Mg₃P₂(s)

(Multiple Choice)

4.9/5

(38)

Question 41

Aspirin (C₉H₈O₄) is produced by the reaction of salicylic acid (M = 138.1 g/mol) and acetic anhydride (M = 102.1 g/mol). C₇H₆O₃(s) + C₄H₆O₃( $\ell$ ) ? C₉H₈O₄(s) + C₂H₄O₂( $\ell$ ) If you react 2.00 g C₇H₆O₃ with 1.60 g C₄H₆O₃, what mass of aspirin (M = 180.2 g/mol) can theoretically be obtained?

(Multiple Choice)

4.8/5

(43)

Question 42

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

(Multiple Choice)

4.9/5

(33)

Question 43

What is the molarity of an NaI solution that contains 4.5 g of NaI in 21.0 mL of solution?

(Multiple Choice)

4.7/5

(42)

Question 44

The following equation: A = ε × $\ell$ × C (where $\ell$ is path length and C is concentration) is known as the _____-Lambert law.

(Short Answer)

4.8/5

(28)

Question 45

In order to dilute 77.1 mL of 0.778 M HCl to 0.100 M, the volume of water that must be added is

(Multiple Choice)

4.9/5

(32)

Question 46

A 2.288 g sample of a hydrocarbon is burned in an excess of dioxygen, producing 6.277 g CO₂ and 5.139 g H₂O. What is the empirical formula of the hydrocarbon?

(Multiple Choice)

4.9/5

(41)

Question 47

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

(Short Answer)

4.9/5

(32)

Question 48

An aqueous nitric acid solution has a pH of 2.15. What mass of nitric acid, HNO₃, is present in 20.0 L of this solution?

(Multiple Choice)

4.9/5

(32)

Question 49

Consider the fermentation reaction of glucose: C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂ A 1.00-mol sample of C₆H₁₂O₆ was placed in a vat with 100 g of yeast. If 38.5 g of C₂H₅OH was obtained, what was the percent yield of C₂H₅OH?

(Multiple Choice)

4.9/5

(40)

Question 50

The complete combustion of 0.31 moles of propane, C₃H₈, will

(Multiple Choice)

4.7/5

(32)

Question 51

The numbers preceding the formulas in chemical equations are referred to as the _____ coefficients.

(Short Answer)

4.7/5

(43)

Question 52

The combustion of 0.0272 mole of a hydrocarbon produces 1.9609 g H₂O and 3.5927 g CO₂. What is the molar mass of the hydrocarbon?

(Multiple Choice)

4.8/5

(44)

Question 53

Zn reacts with hydrochloric acid. Zn(s) + 2 HCl(aq) ? ZnCl₂(aq) + H₂(g) What volume of 3.05 M HCl(aq) will react with 25.0 g Zn(s)?

(Multiple Choice)

4.8/5

(33)

Question 54

The commercial production of phosphoric acid, H₃PO₄, can be represented by the equation 1500 298 302 1000 298 + 3+ 5+ 5+ 3 310/ 60.1/ 12.0/ 32.0/ 18.0/ right arrow3CaSiO start subscript 3 end subscript plus5CO start subscript 2 end subscript plus2H start subscript 3 end subscript PO start subscript 4 end subscript The molar mass for each reactant is shown below the reactant, and the mass of each reactant for this problem is given above. Which substance is the limiting reactant?

(Multiple Choice)

4.9/5

(33)

Question 55

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) ? 2 NaCl(aq) + H₂O( $\ell$ ) + CO₂(g)

(Multiple Choice)

4.9/5

(35)

Question 56

A 2.197 g sample of a compound containing only carbon, hydrogen, and oxygen is burned in an excess of dioxygen, producing 4.197 g CO₂ and 2.578 g H₂O. What is the empirical formula of the compound?

(Multiple Choice)

4.8/5

(34)

Question 57

What minimum mass of cobalt (II) nitrate must be added to 60.0 mL of a 0.0999 M phosphate solution in order to completely precipitate all of the phosphate as solid cobalt (II) phosphate? 2PO₄^3-(aq) + 3Co(NO₃)₂(aq) ? Co₃(PO₄)₂(s) + 6NO₃^-(aq)

(Multiple Choice)

4.8/5

(36)

Question 58

Potassium hydrogen carbonate decomposes according to the reaction below: 2 KHCO₃(s) → K₂CO₃(s) + CO₂(g) + H₂O(l) How many moles of potassium carbonate are produced if 421 g of potassium hydrogen carbonate is heated?

(Multiple Choice)

4.9/5

(43)

Question 59

A 1.850 g mixture of SrCO₃ and SrO is heated. The SrCO₃ decomposes to SrO and CO₂. What was the mass percentage of SrCO₃ in the mixture if the mass after heating is 1.445 g?

(Multiple Choice)

4.8/5

(28)

Question 60

Showing 41 - 60 of 77

Exam 5: Stoichiometry: Quantitative Information About Chemical Reactions

How many moles of Mg3P2(s) can be produced from the reaction of 0.14 mol Mg(s) with 0.020 mol P4(s)? 6 Mg(s) + P4(s) → 2 Mg3P2(s)

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

What is the molarity of an NaI solution that contains 4.5 g of NaI in 21.0 mL of solution?

The following equation: A = ε × ℓ\ellℓ × C (where ℓ\ellℓ is path length and C is concentration) is known as the _____-Lambert law.

In order to dilute 77.1 mL of 0.778 M HCl to 0.100 M, the volume of water that must be added is

A 2.288 g sample of a hydrocarbon is burned in an excess of dioxygen, producing 6.277 g CO2 and 5.139 g H2O. What is the empirical formula of the hydrocarbon?

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

An aqueous nitric acid solution has a pH of 2.15. What mass of nitric acid, HNO3, is present in 20.0 L of this solution?

Consider the fermentation reaction of glucose: C6H12O6 → 2C2H5OH + 2CO2 A 1.00-mol sample of C6H12O6 was placed in a vat with 100 g of yeast. If 38.5 g of C2H5OH was obtained, what was the percent yield of C2H5OH?

The complete combustion of 0.31 moles of propane, C3H8, will

The numbers preceding the formulas in chemical equations are referred to as the _____ coefficients.

The combustion of 0.0272 mole of a hydrocarbon produces 1.9609 g H2O and 3.5927 g CO2. What is the molar mass of the hydrocarbon?

Zn reacts with hydrochloric acid. Zn(s) + 2 HCl(aq) ? ZnCl2(aq) + H2(g) What volume of 3.05 M HCl(aq) will react with 25.0 g Zn(s)?

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) ? 2 NaCl(aq) + H2O( ℓ\ellℓ ) + CO2(g)

A 2.197 g sample of a compound containing only carbon, hydrogen, and oxygen is burned in an excess of dioxygen, producing 4.197 g CO2 and 2.578 g H2O. What is the empirical formula of the compound?

What minimum mass of cobalt (II) nitrate must be added to 60.0 mL of a 0.0999 M phosphate solution in order to completely precipitate all of the phosphate as solid cobalt (II) phosphate? 2PO43-(aq) + 3Co(NO3)2(aq) ? Co3(PO4)2(s) + 6NO3-(aq)

Potassium hydrogen carbonate decomposes according to the reaction below: 2 KHCO3(s) → K2CO3(s) + CO2(g) + H2O(l) How many moles of potassium carbonate are produced if 421 g of potassium hydrogen carbonate is heated?

A 1.850 g mixture of SrCO3 and SrO is heated. The SrCO3 decomposes to SrO and CO2. What was the mass percentage of SrCO3 in the mixture if the mass after heating is 1.445 g?

Basic Concepts of Chemistry

Lets 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 Solid State

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Chemical Reactivity: Equilibria

Principles of Chemical Reactivity: the Chemistry of Acids and Bases

Principles of Chemical Reactivity: Other Aspects of Aqueous Equilibria

Principles of Chemical Reactivity: Entropy and Free Energy

Principles of Chemical 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

How many moles of Mg₃P₂(s) can be produced from the reaction of 0.14 mol Mg(s) with 0.020 mol P₄(s)? 6 Mg(s) + P₄(s) → 2 Mg₃P₂(s)

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

The following equation: A = ε × $\ell$ × C (where $\ell$ is path length and C is concentration) is known as the _____-Lambert law.

A 2.288 g sample of a hydrocarbon is burned in an excess of dioxygen, producing 6.277 g CO₂ and 5.139 g H₂O. What is the empirical formula of the hydrocarbon?

An aqueous nitric acid solution has a pH of 2.15. What mass of nitric acid, HNO₃, is present in 20.0 L of this solution?

Consider the fermentation reaction of glucose: C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂ A 1.00-mol sample of C₆H₁₂O₆ was placed in a vat with 100 g of yeast. If 38.5 g of C₂H₅OH was obtained, what was the percent yield of C₂H₅OH?

The complete combustion of 0.31 moles of propane, C₃H₈, will

The combustion of 0.0272 mole of a hydrocarbon produces 1.9609 g H₂O and 3.5927 g CO₂. What is the molar mass of the hydrocarbon?

Zn reacts with hydrochloric acid. Zn(s) + 2 HCl(aq) ? ZnCl₂(aq) + H₂(g) What volume of 3.05 M HCl(aq) will react with 25.0 g Zn(s)?

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) ? 2 NaCl(aq) + H₂O( $\ell$ ) + CO₂(g)

A 2.197 g sample of a compound containing only carbon, hydrogen, and oxygen is burned in an excess of dioxygen, producing 4.197 g CO₂ and 2.578 g H₂O. What is the empirical formula of the compound?

What minimum mass of cobalt (II) nitrate must be added to 60.0 mL of a 0.0999 M phosphate solution in order to completely precipitate all of the phosphate as solid cobalt (II) phosphate? 2PO₄^3-(aq) + 3Co(NO₃)₂(aq) ? Co₃(PO₄)₂(s) + 6NO₃^-(aq)

Potassium hydrogen carbonate decomposes according to the reaction below: 2 KHCO₃(s) → K₂CO₃(s) + CO₂(g) + H₂O(l) How many moles of potassium carbonate are produced if 421 g of potassium hydrogen carbonate is heated?

A 1.850 g mixture of SrCO₃ and SrO is heated. The SrCO₃ decomposes to SrO and CO₂. What was the mass percentage of SrCO₃ in the mixture if the mass after heating is 1.445 g?