Question 1

Which of the compounds of H2C2O4,Ca(OH)2,KOH,and HI,behave as acids when they are dissolved in water?

Accepted Answer

A) Ca(OH)2 and KOH 
B) H2C2O4 and HI 
C) only HI 
D) only KOH 
A) Ca(OH)2 and KOH 
B) H2C2O4 and HI 
C) only HI 
D) only KOH

Question 2

How many molecules of sucrose (C12H22O11,molar mass = 342.30 g/mol)are contained in 14.3 mL of 0.140 M sucrose solution?

Accepted Answer

A) 8.29 × 1022 molecules C12H22O11 
B) 1.21 × 1021 molecules C12H22O11 
C) 6.15 × 1022 molecules C12H22O11 
D) 1.63 × 1023 molecules C12H22O11 
E) 5.90 × 1024 molecules C12H22O11 
A) 8.29 × 1022 molecules C12H22O11 
B) 1.21 × 1021 molecules C12H22O11 
C) 6.15 × 1022 molecules C12H22O11 
D) 1.63 × 1023 molecules C12H22O11 
E) 5.90 × 1024 molecules C12H22O11

Question 3

Calculate the concentration (M)of sodium ions in a solution made by diluting 40.0 mL of a 0.474 M solution of sodium sulfide to a total volume of 300 mL.

Accepted Answer

The answer of Calculate the concentration (M)of sodium ions in...

Question 4

Define a net ionic equation.

Accepted Answer

A net ionic equation is an equ

Question 5

Based on the balanced chemical equation shown below,determine the molarity of a solution containing Fe2+(aq),if 40.00 mL of the Fe2+(aq)solution is required to completely react with 30.00 mL of a 0.250 M potassium bromate,KBrO3(aq),solution.The chemical equation for the reaction is
6 Fe2+(aq)+ BrO3-(aq)+ 6 H+(aq)→ 6 Fe3+(aq)+ Br-(aq)+ 3 H2O(l).

Accepted Answer

A) 0.0312 M 
B) 0.188 M 
C) 1.12 M 
D) 2.00 M 
A) 0.0312 M 
B) 0.188 M 
C) 1.12 M 
D) 2.00 M

Question 6

Which of the following is an acid base reaction?

Accepted Answer

A) C(s)+ O2(g)→ CO2(g) 
B) 2 HClO4(aq)+ Ca(OH)2(aq)→ 2 H2O(l)+ Ca(ClO4)2(aq) 
C) Fe(s)+ 2 AgNO3(aq)→ 2 Ag(s)+ Fe(NO3)2(aq) 
D) MgSO4(aq)+ Ba(NO3)2(aq)→ Mg(NO3)2(aq)+ BaSO4(s) 
E) None of the above are acid base reactions. 
A) C(s)+ O2(g)→ CO2(g) 
B) 2 HClO4(aq)+ Ca(OH)2(aq)→ 2 H2O(l)+ Ca(ClO4)2(aq) 
C) Fe(s)+ 2 AgNO3(aq)→ 2 Ag(s)+ Fe(NO3)2(aq) 
D) MgSO4(aq)+ Ba(NO3)2(aq)→ Mg(NO3)2(aq)+ BaSO4(s) 
E) None of the above are acid base reactions.

Question 7

When dissolved in water,KOH behaves as

Accepted Answer

A) an acid that forms K+ and OH- ions. 
B) an acid that forms KO- and H+ ions. 
C) a base that forms K+ and OH- ions. 
D) a base that forms KO- and H+ ions. 
A) an acid that forms K+ and OH- ions. 
B) an acid that forms KO- and H+ ions. 
C) a base that forms K+ and OH- ions. 
D) a base that forms KO- and H+ ions.

Question 8

The mixing of which pair of reactants will result in a precipitation reaction?

Accepted Answer

A) Ba(NO3)2(aq)+ Na2CO3(aq) 
B) K2SO4(aq)+ Cu(NO3)2(aq) 
C) NaClO4(aq)+ (NH4)2S(aq) 
D) NH4Br(aq)+ NH4I(aq) 
A) Ba(NO3)2(aq)+ Na2CO3(aq) 
B) K2SO4(aq)+ Cu(NO3)2(aq) 
C) NaClO4(aq)+ (NH4)2S(aq) 
D) NH4Br(aq)+ NH4I(aq)

Question 9

Dinitrogen monoxide gas decomposes to form nitrogen gas and oxygen gas.How many grams of oxygen are formed when 10.0 g of dinitrogen monoxide decomposes?

Accepted Answer

A) 0.275 g 
B) 3.64 g 
C) 7.27 g 
D) 14.5 g 
A) 0.275 g 
B) 3.64 g 
C) 7.27 g 
D) 14.5 g

Question 10

Determine the theoretical yield of H2S (in moles)if 4.0 mol Al2S3 and 4.0 mol H2O are reacted according to the following balanced reaction.A possibly useful molar mass is Al2S3 = 150.17 g/mol.
Al2S3(s)+ 6 H2O(l)→ 2 Al(OH)3(s)+ 3 H2S(g)

Accepted Answer

A) 12 mol H2S 
B) 4.0 mol H2S 
C) 18 mol H2S 
D) 6.0 mol H2S 
E) 2.0 mol H2S 
A) 12 mol H2S 
B) 4.0 mol H2S 
C) 18 mol H2S 
D) 6.0 mol H2S 
E) 2.0 mol H2S

Question 11

Determine the oxidation state of P in PO33-.

Accepted Answer

A) +3 
B) +6 
C) +2 
D) 0 
E) -3 
A) +3 
B) +6 
C) +2 
D) 0 
E) -3

Question 12

Give the percent yield when 28.16 g of CO2 are formed from the reaction of 4.000 moles of C8H18 with 4.000 moles of O2.
2 C8H18 + 25 O2 → 16 CO2 + 18 H2O

Accepted Answer

A) 20.00% 
B) 25.00% 
C) 88.90% 
D) 22.20% 
A) 20.00% 
B) 25.00% 
C) 88.90% 
D) 22.20%

Question 13

How many chloride ions are present in 65.5 mL of 0.210 M AlCl3 solution?

Accepted Answer

A) 4.02 × 1023 chloride ions 
B) 5.79 × 1024 chloride ions 
C) 2.48 × 1022 chloride ions 
D) 8.28 × 1021 chloride ions 
E) 1.21 × 1022 chloride ions 
A) 4.02 × 1023 chloride ions 
B) 5.79 × 1024 chloride ions 
C) 2.48 × 1022 chloride ions 
D) 8.28 × 1021 chloride ions 
E) 1.21 × 1022 chloride ions

Question 14

Match the following.
-NaCl(aq)+ AgNO3(aq)→ AgCl(s)+ NaNO3(aq)

Accepted Answer

A) combustion 
B) acid base 
C) oxidation reduction 
D) gas evolution 
E) precipitation 
A) combustion 
B) acid base 
C) oxidation reduction 
D) gas evolution 
E) precipitation

Question 15

Determine the concentration of a solution prepared by diluting 25.0 mL of a stock 0.188 M Ca(NO3)2 solution to 150.0 mL.

Accepted Answer

A) 1.13 M 
B) 0.0887 M 
C) 0.0313 M 
D) 0.0199 M 
E) 0.0501 M 
A) 1.13 M 
B) 0.0887 M 
C) 0.0313 M 
D) 0.0199 M 
E) 0.0501 M

Question 16

Lithium and nitrogen react to produce lithium nitride by the following reaction.
6Li(s)+ N2(g)→ 2Li3N(s)
How many moles of N2 are needed to react with 0.500 mol of lithium?

Accepted Answer

A) 3.00 
B) 0.500 
C) 0.167 
D) 1.50 
E) 0.0833 
A) 3.00 
B) 0.500 
C) 0.167 
D) 1.50 
E) 0.0833

Question 17

How many milliliters of a 0.266 M NaNO3 solution are required to make 150.0 mL of 0.075 M NaNO3 solution?

Accepted Answer

A) 53.2 mL 
B) 42.3 mL 
C) 18.8 mL 
D) 23.6 mL 
E) 35.1 mL 
A) 53.2 mL 
B) 42.3 mL 
C) 18.8 mL 
D) 23.6 mL 
E) 35.1 mL

Question 18

A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride (PCl3).If it is the only product,what mass of PCl3 is formed?

Accepted Answer

A) 30.15 g 
B) 54.93 g 
C) 140.01 g 
D) 79.71 g 
E) 91.86 g 
A) 30.15 g 
B) 54.93 g 
C) 140.01 g 
D) 79.71 g 
E) 91.86 g

Question 19

Balance the chemical equation given below,and calculate the volume of nitrogen monoxide gas produced when 8.00 g of ammonia is reacted with 12.0 g of oxygen at 25°C? The density of nitrogen monoxide at 25°C is 1.23 g/L.
____ NH3(g)+ ____ O2(g)→ ____ NO(g)+ ____ H2O(l)

Accepted Answer

A) 7.32 L 
B) 11.1 L 
C) 11.5 L 
D) 17.3 L 
A) 7.32 L 
B) 11.1 L 
C) 11.5 L 
D) 17.3 L

Which of the compounds of H₂C₂O₄,Ca(OH)₂,KOH,and HI,behave as acids when they are dissolved in water?

How many molecules of sucrose (C₁₂H₂₂O₁₁,molar mass = 342.30 g/mol)are contained in 14.3 mL of 0.140 M sucrose solution?

Calculate the concentration (M)of sodium ions in a solution made by diluting 40.0 mL of a 0.474 M solution of sodium sulfide to a total volume of 300 mL.

Define a net ionic equation.

Which of the following is an acid base reaction?

When dissolved in water,KOH behaves as

The mixing of which pair of reactants will result in a precipitation reaction?

Dinitrogen monoxide gas decomposes to form nitrogen gas and oxygen gas.How many grams of oxygen are formed when 10.0 g of dinitrogen monoxide decomposes?

Determine the theoretical yield of H₂S (in moles)if 4.0 mol Al₂S₃ and 4.0 mol H₂O are reacted according to the following balanced reaction.A possibly useful molar mass is Al₂S₃= 150.17 g/mol. Al₂S₃(s)+ 6 H₂O(l)→ 2 Al(OH)₃(s)+ 3 H₂S(g)

Determine the oxidation state of P in PO₃^3-.

Give the percent yield when 28.16 g of CO₂ are formed from the reaction of 4.000 moles of C₈H₁₈ with 4.000 moles of O₂. 2 C₈H₁₈ + 25 O₂ → 16 CO₂ + 18 H₂O

How many chloride ions are present in 65.5 mL of 0.210 M AlCl₃ solution?

Match the following. -NaCl(aq)+ AgNO₃(aq)→ AgCl(s)+ NaNO₃(aq)

Determine the concentration of a solution prepared by diluting 25.0 mL of a stock 0.188 M Ca(NO₃)₂ solution to 150.0 mL.

Lithium and nitrogen react to produce lithium nitride by the following reaction. 6Li(s)+ N₂(g)→ 2Li₃N(s) How many moles of N₂ are needed to react with 0.500 mol of lithium?

How many milliliters of a 0.266 M NaNO₃ solution are required to make 150.0 mL of 0.075 M NaNO₃ solution?

A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride (PCl₃).If it is the only product,what mass of PCl₃ is formed?

Balance the chemical equation given below,and calculate the volume of nitrogen monoxide gas produced when 8.00 g of ammonia is reacted with 12.0 g of oxygen at 25°C? The density of nitrogen monoxide at 25°C is 1.23 g/L. NH₃(g)+ O₂(g)→ NO(g)+ H₂O(l)

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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

Liquids, Solids, and Intermolecular Forces

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Exam 4: Chemical Quantities and Aqueous Reactions

Which of the compounds of H2C2O4,Ca(OH)2,KOH,and HI,behave as acids when they are dissolved in water?

How many molecules of sucrose (C12H22O11,molar mass = 342.30 g/mol)are contained in 14.3 mL of 0.140 M sucrose solution?

Calculate the concentration (M)of sodium ions in a solution made by diluting 40.0 mL of a 0.474 M solution of sodium sulfide to a total volume of 300 mL.

Define a net ionic equation.

Which of the following is an acid base reaction?

When dissolved in water,KOH behaves as

The mixing of which pair of reactants will result in a precipitation reaction?

Dinitrogen monoxide gas decomposes to form nitrogen gas and oxygen gas.How many grams of oxygen are formed when 10.0 g of dinitrogen monoxide decomposes?

Determine the theoretical yield of H2S (in moles)if 4.0 mol Al2S3 and 4.0 mol H2O are reacted according to the following balanced reaction.A possibly useful molar mass is Al2S3 = 150.17 g/mol. Al2S3(s)+ 6 H2O(l)→ 2 Al(OH)3(s)+ 3 H2S(g)

Determine the oxidation state of P in PO33-.

Give the percent yield when 28.16 g of CO2 are formed from the reaction of 4.000 moles of C8H18 with 4.000 moles of O2. 2 C8H18 + 25 O2 → 16 CO2 + 18 H2O

How many chloride ions are present in 65.5 mL of 0.210 M AlCl3 solution?

Match the following. -NaCl(aq)+ AgNO3(aq)→ AgCl(s)+ NaNO3(aq)

Determine the concentration of a solution prepared by diluting 25.0 mL of a stock 0.188 M Ca(NO3)2 solution to 150.0 mL.

Lithium and nitrogen react to produce lithium nitride by the following reaction. 6Li(s)+ N2(g)→ 2Li3N(s) How many moles of N2 are needed to react with 0.500 mol of lithium?

How many milliliters of a 0.266 M NaNO3 solution are required to make 150.0 mL of 0.075 M NaNO3 solution?

A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride (PCl3).If it is the only product,what mass of PCl3 is formed?

Balance the chemical equation given below,and calculate the volume of nitrogen monoxide gas produced when 8.00 g of ammonia is reacted with 12.0 g of oxygen at 25°C? The density of nitrogen monoxide at 25°C is 1.23 g/L. ____ NH3(g)+ ____ O2(g)→ ____ NO(g)+ ____ H2O(l)

Matter, Measurement, and Problem Solving

Atoms and Elements

Molecules, Compounds and Chemical Equations

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

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Which of the compounds of H₂C₂O₄,Ca(OH)₂,KOH,and HI,behave as acids when they are dissolved in water?

How many molecules of sucrose (C₁₂H₂₂O₁₁,molar mass = 342.30 g/mol)are contained in 14.3 mL of 0.140 M sucrose solution?

Determine the theoretical yield of H₂S (in moles)if 4.0 mol Al₂S₃ and 4.0 mol H₂O are reacted according to the following balanced reaction.A possibly useful molar mass is Al₂S₃= 150.17 g/mol. Al₂S₃(s)+ 6 H₂O(l)→ 2 Al(OH)₃(s)+ 3 H₂S(g)

Determine the oxidation state of P in PO₃^3-.

Give the percent yield when 28.16 g of CO₂ are formed from the reaction of 4.000 moles of C₈H₁₈ with 4.000 moles of O₂. 2 C₈H₁₈ + 25 O₂ → 16 CO₂ + 18 H₂O

How many chloride ions are present in 65.5 mL of 0.210 M AlCl₃ solution?

Match the following. -NaCl(aq)+ AgNO₃(aq)→ AgCl(s)+ NaNO₃(aq)

Determine the concentration of a solution prepared by diluting 25.0 mL of a stock 0.188 M Ca(NO₃)₂ solution to 150.0 mL.

Lithium and nitrogen react to produce lithium nitride by the following reaction. 6Li(s)+ N₂(g)→ 2Li₃N(s) How many moles of N₂ are needed to react with 0.500 mol of lithium?

How many milliliters of a 0.266 M NaNO₃ solution are required to make 150.0 mL of 0.075 M NaNO₃ solution?

A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride (PCl₃).If it is the only product,what mass of PCl₃ is formed?

Balance the chemical equation given below,and calculate the volume of nitrogen monoxide gas produced when 8.00 g of ammonia is reacted with 12.0 g of oxygen at 25°C? The density of nitrogen monoxide at 25°C is 1.23 g/L. NH₃(g)+ O₂(g)→ NO(g)+ H₂O(l)