Question 1

Calculate the concentration (molarity) of a solution prepared by dissolving 72.8 g C2H6O in 2.34 L of water.

Accepted Answer

A)  1.58 M
B)  1.48 M
C)  0.987 M
D)  0.633 M
E)  0.675 MF) A) and C)
G) A) and E)

Question 2

Identify the net ionic equation for the reaction (if any) that occurs when aqueous solutions of H2SO4 and KOH are mixed.

Accepted Answer

A)  H+(aq) + OH-(aq) → H2O(l) 
B)  2K+(aq) + SO42-(aq) → K2SO4(s) 
C)  H+(aq) + OH-(aq) + 2K+(aq) + SO42-(aq) → H2O(l) + K2SO4(s) 
D)  H22+(aq) + OH-(aq) → H2(OH) 2(l) 
E)  No reaction occurs.F) A) and B)
G) B) and E)

Question 3

Describe the difference between complete ionic and net ionic equations.

Accepted Answer

A complete ionic equation shows all of t...

Question 4

Identify the net ionic equation for the reaction (if any) that occurs when aqueous solutions of Al(C2H3O2) 3 and LiNO3 are mixed.

Accepted Answer

A)  Al3+(aq) + 3NO3-(aq) → Al(NO3) 3(s) 
B)  Li+(aq) + C2H3O2-(aq) → LiC2H3O2(s) 
C)  Al3+(aq) + 3NO3-(aq) + Li+(aq) + C2H3O2-(aq) → Al(NO3) 3(aq) + LiC2H3O2(s) 
D)  3Li+(aq) + (C2H3O2) 33-(aq) → Li3(C2H3O2) 3(s) 
E)  No reaction occurs.F) A) and D)
G) A) and E)

Question 5

What is the concentration (M)of sodium ions in 4.57 L of a .398 mol L-1 Na3P solution?

Accepted Answer

Question 6

Which of the following solutions will have the highest electrical conductivity?

Accepted Answer

A)  0.045 mol L-1 Al2(SO4) 3
B)  0.050 mol L-1 (NH4) 2CO3
C)  0.10 mol L-1 LiBr
D)  0.10 mol L-1 NaI
E)  0.10 mol L-1 KFF) B) and D)
G) B) and C)

Question 7

Metallic aluminum reacts with MnO2 at elevated temperatures to form manganese metal and aluminum oxide. A mixture of these two reactants is 67.2% mole percent Al. Find the theoretical yield (in grams) of manganese from the reaction of 250 g of this mixture.

Accepted Answer

A)  87.3 g
B)  193 g
C)  18.13 g
D)  6.72 g
E)  96.6 gF) None of the above
G) A) and E)

Question 8

What is the molarity of a potassium triiodide solution, KI3(aq) , if 30.00 mL of the solution is required to completely react with 25.00 mL of a 0.200 mol L-1 thiosulfate solution, K2S2O3(aq) ? The chemical equation for the reaction is 2S2O32-(aq) + I3-(aq) → S4O62-(aq) + 3I-(aq)

Accepted Answer

A)  0.0833 mol L-1
B)  0.120 mol L-1
C)  0.167 mol L-1
D)  0.333 mol L-1E) B) and D)
F) A) and B)

Question 9

A solution is prepared by mixing 50.0 mL of 0.100 mol L-1 HCl and 10.0 mL of 0.200 mol L-1 NaCl. What is the molarity of chloride ion in this solution?

Accepted Answer

A)  0.183
B)  8.57
C)  3.50
D)  0.0500
E)  0.117F) B) and C)
G) A) and E)

Question 10

Lithium and nitrogen react to produce lithium nitride: 6Li(s) + N2(g) → 2Li3N(s) 
How many moles of lithium nitride are produced when 0.450 mol of lithium react in this fashion?

Accepted Answer

A)  0.150
B)  0.900
C)  0.0750
D)  1.35
E)  0.225F) All of the above
G) None of the above

Question 11

Identify the oxidation state of Mg in Mg(s) . 
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)

Accepted Answer

A)  +1
B)  +2
C)  0
D)  -1
E)  -2F) A) and C)
G) C) and D)

Question 12

Match the following.

-H2SO4(aq) + 2LiOH(aq) → 2H2O(l) + Li2SO4(aq)

Accepted Answer

A)  acid-base
B)  oxidation-reduction
C)  combustion
D)  gas evolutionE) None of the above
F) B) and C)

Question 13

Which of the following is an acid-base reaction?

Accepted Answer

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

Question 14

Identify the polyprotic acid.

Accepted Answer

A)  H2SO4
B)  HCl
C)  NaCl
D)  NaOH
E)  Li(OH) 2F) A) and E)
G) None of the above

Question 15

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 -1. ________ NH3(g) + ________ O2(g) → ________ NO(g) + ________ H2O(l)  A) 7.32 L B) 11.1 L C) 11.5 L D) 17.3 L" class="answers-bank-image d-inline" rel="preload" > is 1.23 g L-1. ________ 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 LE) All of the above
F) C) and D)

Question 16

How can you tell if a reaction is an oxidation-reduction reaction?

Accepted Answer

At least one species is losing electrons...

Question 17

Balance the chemical equation given below, and determine the number of millilitres of 0.00300 mol L-1 phosphoric acid required to neutralize 45.00 mL of 0.00150 mol L-1 calcium hydroxide. ________ Ca(OH) 2(aq) + ________ H3PO4(aq) → ________ Ca3(PO4) 2(aq) + ________ H2O(l)

Accepted Answer

A)  3.04 mL
B)  15.0 mL
C)  22.5 mL
D)  33.8 mLE) A) and D)
F) A) and C)

Question 18

Which of the following compounds is soluble in water?

Accepted Answer

A)  CaCl2
B)  MgCO3
C)  PbCl2
D)  BaSO4
E)  None of these compounds is soluble in water.F) A) and D)
G) A) and E)

Question 19

A solution is prepared by adding 1.60 g of solid NaCl to 50.0 mL of 0.100 mol L-1 CaCl2. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 mL.

Accepted Answer

A)  0.747
B)  0.647
C)  0.132
D)  0.232
E)  0.547F) A) and E)
G) D) and E)

Question 20

Which of the following pairs of aqueous solutions will form a precipitate when mixed?

Accepted Answer

A)  NH4NO3 + Li2CO3
B)  Hg2(NO3) 2 + LiI
C)  NaCl + Li3PO4
D)  AgC2H3O2 + Cu(NO3) 2
E)  None of the above solution pairs will produce a precipitate.F) A) and E)
G) None of the above

Exam 4: Chemical Reactions and Stoichiometry

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 is 1.23 g L^-1. NH₃(g) + O₂(g) → NO(g) + H₂O(l)

Correct Answer
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Identify the net ionic equation for the reaction (if any) that occurs when aqueous solutions of Al(C₂H₃O₂) ₃ and LiNO₃ are mixed.

Correct Answer
verified

Which of the following is an acid-base reaction?

Correct Answer
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A solution is prepared by mixing 50.0 mL of 0.100 mol L^-1 HCl and 10.0 mL of 0.200 mol L^-1 NaCl. What is the molarity of chloride ion in this solution?

Correct Answer
verified

How can you tell if a reaction is an oxidation-reduction reaction?

Correct Answer
verified
At least one species is losing electrons...
View Answer

Metallic aluminum reacts with MnO₂ at elevated temperatures to form manganese metal and aluminum oxide. A mixture of these two reactants is 67.2% mole percent Al. Find the theoretical yield (in grams) of manganese from the reaction of 250 g of this mixture.

Correct Answer
verified

Calculate the concentration (molarity) of a solution prepared by dissolving 72.8 g C₂H₆O in 2.34 L of water.

Correct Answer
verified

Match the following. -H₂SO₄(aq) + 2LiOH(aq) → 2H₂O(l) + Li₂SO4(aq)

Correct Answer
verified

Identify the polyprotic acid.

Correct Answer
verified

Lithium and nitrogen react to produce lithium nitride: 6Li(s) + N₂(g) → 2Li₃N(s) How many moles of lithium nitride are produced when 0.450 mol of lithium react in this fashion?

Correct Answer
verified

Identify the net ionic equation for the reaction (if any) that occurs when aqueous solutions of H₂SO₄ and KOH are mixed.

Correct Answer
verified

Correct Answer
verified

Describe the difference between complete ionic and net ionic equations.

Correct Answer
verified
A complete ionic equation shows all of t...
View Answer

Identify the oxidation state of Mg in Mg(s) . Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g)

Correct Answer
verified

What is the concentration (M)of sodium ions in 4.57 L of a .398 mol L^-1 Na₃P solution?

Correct Answer
verified

Balance the chemical equation given below, and determine the number of millilitres of 0.00300 mol L^-1 phosphoric acid required to neutralize 45.00 mL of 0.00150 mol L^-1 calcium hydroxide. Ca(OH) ₂(aq) + H₃PO₄(aq) → Ca₃(PO₄) ₂(aq) + H₂O(l)

Correct Answer
verified

Which of the following solutions will have the highest electrical conductivity?

Correct Answer
verified

Which of the following compounds is soluble in water?

Correct Answer
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A solution is prepared by adding 1.60 g of solid NaCl to 50.0 mL of 0.100 mol L^-1 CaCl₂. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 mL.

Correct Answer
verified

Which of the following pairs of aqueous solutions will form a precipitate when mixed?

Correct Answer
verified

Exam 4: Chemical Reactions and Stoichiometry

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 is 1.23 g L-1. ________ NH3(g) + ________ O2(g) → ________ NO(g) + ________ H2O(l)

Correct AnswerverifiedShow Answer

Identify the net ionic equation for the reaction (if any) that occurs when aqueous solutions of Al(C2H3O2) 3 and LiNO3 are mixed.

Correct AnswerverifiedShow Answer

Which of the following is an acid-base reaction?

Correct AnswerverifiedShow Answer

A solution is prepared by mixing 50.0 mL of 0.100 mol L-1 HCl and 10.0 mL of 0.200 mol L-1 NaCl. What is the molarity of chloride ion in this solution?

Correct AnswerverifiedShow Answer

How can you tell if a reaction is an oxidation-reduction reaction?

Correct AnswerverifiedAt least one species is losing electrons...View AnswerShow Answer

Metallic aluminum reacts with MnO2 at elevated temperatures to form manganese metal and aluminum oxide. A mixture of these two reactants is 67.2% mole percent Al. Find the theoretical yield (in grams) of manganese from the reaction of 250 g of this mixture.

Correct AnswerverifiedShow Answer

Calculate the concentration (molarity) of a solution prepared by dissolving 72.8 g C2H6O in 2.34 L of water.

Correct AnswerverifiedShow Answer

Match the following. -H2SO4(aq) + 2LiOH(aq) → 2H2O(l) + Li2SO4(aq)

Correct AnswerverifiedShow Answer

Identify the polyprotic acid.

Correct AnswerverifiedShow Answer

Lithium and nitrogen react to produce lithium nitride: 6Li(s) + N2(g) → 2Li3N(s) How many moles of lithium nitride are produced when 0.450 mol of lithium react in this fashion?

Correct AnswerverifiedShow Answer

Identify the net ionic equation for the reaction (if any) that occurs when aqueous solutions of H2SO4 and KOH are mixed.

Correct AnswerverifiedShow Answer

What is the molarity of a potassium triiodide solution, KI3(aq) , if 30.00 mL of the solution is required to completely react with 25.00 mL of a 0.200 mol L-1 thiosulfate solution, K2S2O3(aq) ? The chemical equation for the reaction is 2S2O32-(aq) + I3-(aq) → S4O62-(aq) + 3I-(aq)

Correct AnswerverifiedShow Answer

Describe the difference between complete ionic and net ionic equations.

Correct AnswerverifiedA complete ionic equation shows all of t...View AnswerShow Answer

Identify the oxidation state of Mg in Mg(s) . Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)

Correct AnswerverifiedShow Answer

What is the concentration (M)of sodium ions in 4.57 L of a .398 mol L-1 Na3P solution?

Correct AnswerverifiedShow Answer

Balance the chemical equation given below, and determine the number of millilitres of 0.00300 mol L-1 phosphoric acid required to neutralize 45.00 mL of 0.00150 mol L-1 calcium hydroxide. ________ Ca(OH) 2(aq) + ________ H3PO4(aq) → ________ Ca3(PO4) 2(aq) + ________ H2O(l)

Correct AnswerverifiedShow Answer

Which of the following solutions will have the highest electrical conductivity?

Correct AnswerverifiedShow Answer

Which of the following compounds is soluble in water?

Correct AnswerverifiedShow Answer

A solution is prepared by adding 1.60 g of solid NaCl to 50.0 mL of 0.100 mol L-1 CaCl2. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 mL.

Correct AnswerverifiedShow Answer

Which of the following pairs of aqueous solutions will form a precipitate when mixed?

Correct AnswerverifiedShow Answer

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 is 1.23 g L^-1. NH₃(g) + O₂(g) → NO(g) + H₂O(l)

Correct Answer
verified

Identify the net ionic equation for the reaction (if any) that occurs when aqueous solutions of Al(C₂H₃O₂) ₃ and LiNO₃ are mixed.

Correct Answer
verified

Correct Answer
verified

A solution is prepared by mixing 50.0 mL of 0.100 mol L^-1 HCl and 10.0 mL of 0.200 mol L^-1 NaCl. What is the molarity of chloride ion in this solution?

Correct Answer
verified

Correct Answer
verified
At least one species is losing electrons...
View Answer

Metallic aluminum reacts with MnO₂ at elevated temperatures to form manganese metal and aluminum oxide. A mixture of these two reactants is 67.2% mole percent Al. Find the theoretical yield (in grams) of manganese from the reaction of 250 g of this mixture.

Correct Answer
verified

Calculate the concentration (molarity) of a solution prepared by dissolving 72.8 g C₂H₆O in 2.34 L of water.

Correct Answer
verified

Match the following. -H₂SO₄(aq) + 2LiOH(aq) → 2H₂O(l) + Li₂SO4(aq)

Correct Answer
verified

Correct Answer
verified

Lithium and nitrogen react to produce lithium nitride: 6Li(s) + N₂(g) → 2Li₃N(s) How many moles of lithium nitride are produced when 0.450 mol of lithium react in this fashion?

Correct Answer
verified

Identify the net ionic equation for the reaction (if any) that occurs when aqueous solutions of H₂SO₄ and KOH are mixed.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A complete ionic equation shows all of t...
View Answer

Identify the oxidation state of Mg in Mg(s) . Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g)

Correct Answer
verified

What is the concentration (M)of sodium ions in 4.57 L of a .398 mol L^-1 Na₃P solution?

Correct Answer
verified

Balance the chemical equation given below, and determine the number of millilitres of 0.00300 mol L^-1 phosphoric acid required to neutralize 45.00 mL of 0.00150 mol L^-1 calcium hydroxide. Ca(OH) ₂(aq) + H₃PO₄(aq) → Ca₃(PO₄) ₂(aq) + H₂O(l)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A solution is prepared by adding 1.60 g of solid NaCl to 50.0 mL of 0.100 mol L^-1 CaCl₂. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 mL.

Correct Answer
verified

Correct Answer
verified