Question 1

How many millilitres of a 0.184 mol L-1 NaNO3 solution contain 0.113 moles of NaNO3?

Accepted Answer

A) 543 mL 
B) 163 mL 
C) 614 mL 
D) 885 mL 
E) 326 mL 
A) 543 mL 
B) 163 mL 
C) 614 mL 
D) 885 mL 
E) 326 mL

Question 2

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li(s)+ $\mathrm { N } _ { 2 }$ (g)? $2 \mathrm { Li } _ { 3 }$ N(s)
In a particular experiment,5.50 g samples of each reagent are reacted.What is the theoretical yield of lithium nitride?

Accepted Answer

A) 4.60 g 
B) 13.7 g 
C) 27.6 g 
D) 3.42 g 
E) 9.20 g 
A) 4.60 g 
B) 13.7 g 
C) 27.6 g 
D) 3.42 g 
E) 9.20 g

Question 3

Identify the net ionic equation for the reaction (if any)that occurs when aqueous solutions of MgSO3 and HI are mixed.

Accepted Answer

A) 2H+(aq)+ SO32-(aq)→ H2SO3(s) 
B) Mg2+(aq)+ 2I-(aq)→ MgI2(s) 
C) 2H+(aq)+ SO32-(aq)+ Mg2+(aq)+ 2I-(aq)→ H2SO3(s)+ MgI2(aq) 
D) 2H+(aq)+ SO32-(aq)→ H2O(l)+ SO2(g) 
E) No reaction occurs. 
A) 2H+(aq)+ SO32-(aq)→ H2SO3(s) 
B) Mg2+(aq)+ 2I-(aq)→ MgI2(s) 
C) 2H+(aq)+ SO32-(aq)+ Mg2+(aq)+ 2I-(aq)→ H2SO3(s)+ MgI2(aq) 
D) 2H+(aq)+ SO32-(aq)→ H2O(l)+ SO2(g) 
E) No reaction occurs.

Question 4

Based on the balanced chemical equation shown below,what volume of 0.250 mol L-1 K2S2O3(aq)is needed to completely react with 24.88 mL of 0.125 mol L-1 KI3(aq),according to the following chemical equation: 
2S2O32-(aq)+ I3-(aq)→ S4O62-(aq)+ 3I-(aq).

Accepted Answer

A) 6.22 mL 
B) 12.4 mL 
C) 24.9 mL 
D) 99.5 mL 
A) 6.22 mL 
B) 12.4 mL 
C) 24.9 mL 
D) 99.5 mL

Question 5

Choose the statement below that is TRUE.

Accepted Answer

A) A weak acid solution consists of mostly nonionized acid molecules. 
B) The term "strong electrolyte" means that the substance is extremely reactive. 
C) A strong acid solution consists of only partially ionized acid molecules. 
D) The term "weak electrolyte" means that the substance is inert. 
E) A molecular compound that does not ionize in solution is considered a strong electrolyte. 
A) A weak acid solution consists of mostly nonionized acid molecules. 
B) The term "strong electrolyte" means that the substance is extremely reactive. 
C) A strong acid solution consists of only partially ionized acid molecules. 
D) The term "weak electrolyte" means that the substance is inert. 
E) A molecular compound that does not ionize in solution is considered a strong electrolyte.

Question 6

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 
6Li(s)+ $\mathrm { N } _ { 2 }$ (g)? $2 \mathrm { Li } _ { 3 }$ N(s)
How many moles of lithium are needed to produce 0.40 mol of $\mathrm { Li } _ { 3 }$ N when the reaction is carried out in the presence of excess nitrogen?

Accepted Answer

A) 0.13 
B) 1.2 
C) 0.20 
D) 0.067 
E) 2.4 
A) 0.13 
B) 1.2 
C) 0.20 
D) 0.067 
E) 2.4

Question 7

Which of the following is a gas-evolution reaction?

Accepted Answer

A) 2C2H6(l)+ 7O2(g)→ 4CO2(g)+ 6H2O(g) 
B) 2H2(g)+ O2(g)→ 2H2O(g) 
C) LiCl(aq)+ NaNO3(aq)→ LiNO3(aq)+ NaCl(aq) 
D) NH4Cl(aq)+ KOH(aq)→ KCl(aq)+ NH3(g)+ H2O(l) 
E) None of the above is a gas-evolution reaction. 
A) 2C2H6(l)+ 7O2(g)→ 4CO2(g)+ 6H2O(g) 
B) 2H2(g)+ O2(g)→ 2H2O(g) 
C) LiCl(aq)+ NaNO3(aq)→ LiNO3(aq)+ NaCl(aq) 
D) NH4Cl(aq)+ KOH(aq)→ KCl(aq)+ NH3(g)+ H2O(l) 
E) None of the above is a gas-evolution reaction.

How many millilitres of a 0.184 mol L^-1 NaNO₃ solution contain 0.113 moles of NaNO₃?

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li(s)+ $\mathrm { N } _ { 2 }$ (g)? $2 \mathrm { Li } _ { 3 }$ N(s) In a particular experiment,5.50 g samples of each reagent are reacted.What is the theoretical yield of lithium nitride?

Identify the net ionic equation for the reaction (if any)that occurs when aqueous solutions of MgSO₃ and HI are mixed.

Based on the balanced chemical equation shown below,what volume of 0.250 mol L^-1 K₂S₂O₃(aq)is needed to completely react with 24.88 mL of 0.125 mol L^-1 KI₃(aq),according to the following chemical equation: 2S₂O₃^2-(aq)+ I₃^-(aq)→ S₄O₆^2-(aq)+ 3I^-(aq).

Choose the statement below that is TRUE.

Which of the following is a gas-evolution reaction?

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules,compounds,and Nomenclature

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, valence Bond Theory, and Molecular Orbital Theory

Liquids, solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

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Exam 4: Chemical Reactions and Stoichiometry

How many millilitres of a 0.184 mol L-1 NaNO3 solution contain 0.113 moles of NaNO3?

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li(s)+ N2\mathrm { N } _ { 2 }N2​ (g)? 2Li32 \mathrm { Li } _ { 3 }2Li3​ N(s) In a particular experiment,5.50 g samples of each reagent are reacted.What is the theoretical yield of lithium nitride?

Identify the net ionic equation for the reaction (if any)that occurs when aqueous solutions of MgSO3 and HI are mixed.

Based on the balanced chemical equation shown below,what volume of 0.250 mol L-1 K2S2O3(aq)is needed to completely react with 24.88 mL of 0.125 mol L-1 KI3(aq),according to the following chemical equation: 2S2O32-(aq)+ I3-(aq)→ S4O62-(aq)+ 3I-(aq).

Choose the statement below that is TRUE.

Which of the following is a gas-evolution reaction?

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules,compounds,and Nomenclature

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, valence Bond Theory, and Molecular Orbital Theory

Liquids, solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

How many millilitres of a 0.184 mol L^-1 NaNO₃ solution contain 0.113 moles of NaNO₃?

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li(s)+ $\mathrm { N } _ { 2 }$ (g)? $2 \mathrm { Li } _ { 3 }$ N(s) In a particular experiment,5.50 g samples of each reagent are reacted.What is the theoretical yield of lithium nitride?

Identify the net ionic equation for the reaction (if any)that occurs when aqueous solutions of MgSO₃ and HI are mixed.

Based on the balanced chemical equation shown below,what volume of 0.250 mol L^-1 K₂S₂O₃(aq)is needed to completely react with 24.88 mL of 0.125 mol L^-1 KI₃(aq),according to the following chemical equation: 2S₂O₃^2-(aq)+ I₃^-(aq)→ S₄O₆^2-(aq)+ 3I^-(aq).