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Home Biochemistry Test Bank For General Organic And Biological Chemistry 3rd Edition By janice Smith
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Test Bank For General Organic And Biological Chemistry 3rd Edition By janice Smith

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Edition: 3rd Edition

Format: Downloadable ZIP File

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Test Bank For General Organic And Biological Chemistry 3rd Edition By Janice Smith

Chapter 05

Chemical Reactions

Multiple Choice Questions

  1. The law of conservation of mass states that
    A.atoms cannot be created or destroyed in a chemical reaction.
    B. molecules cannot be created or destroyed in a chemical reaction.
    C. compounds cannot be created or destroyed in a chemical reaction.
    D. heat cannot be created or destroyed in a chemical reaction.

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Types of Chemical Reactions
Topic: Chemical Reactions

  1. The Greek letter delta (D) may be written over the reaction arrow in a chemical equation to indicate that
  1. heat is generated when the reaction occurs.
    B. a catalyst is needed for the reaction to occur.
    C. water is needed for the reaction to occur.
    D. heat is needed for the reaction to occur.

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Writing and Balancing Chemical Equations
Topic: Chemical Reactions

 

  1. Which chemical equation is properly balanced?
    A.

SO2 + O2 + H2O ® H2SO4

2 SO2 + O2 + 2 H2O ® 2 H2SO4

SO2 + O2 + 4 H2O ® 2 H2SO4

4 SO2 + O2 + 4 H2O ® 4 H2SO4

Bloom’s Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Subtopic: Writing and Balancing Chemical Equations
Topic: Chemical Reactions

  1. In the chemical equation 2 Co(NO3)3 + 3 (NH4)2S ® Co2S3 + 6 NH4NO3 , how many nitrogen atoms are on each side of the equation?
  1. 2
    B. 3
    C. 6
    D. 12
    E. 16

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Writing and Balancing Chemical Equations
Topic: Chemical Reactions

 

  1. Write a balanced chemical equation for the reaction of acetone (C3H6O) with oxygen (O2) to form carbon dioxide (CO2) and water (H2O).
    A.

C3H6O + O2 ® CO2 + H2O

C3H6O + 4 O2 ® 3 CO2 + 3 H2O

3 CO2 + 3 H2O ® C3H6O + 4 O2

6 C3H6O + 8 O2 ® 6 CO2 + 6 H2O

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Writing and Balancing Chemical Equations
Topic: Chemical Reactions

  1. How many carbon atoms are in 3.85 mol of carbon?
    A.3.85 carbon atoms
    B. 23.2 carbon atoms
    C. 6.02 ´ 1023 carbon atoms
    D. 2.32 ´ 1024 carbon atoms
    E. 6.40 ´ 10–24 carbon atoms

Bloom’s Level: 5. Evaluate
Difficulty: Easy
Gradable: automatic
Subtopic: The Mole (Definition and Avogadro’s Number)
Topic: Chemical Calculations

 

  1. How many iron atoms are in 0.32 mol of Fe2O3?
    A.3.9 ´ 1023 iron atoms
    B. 3.9 iron atoms
    C. 6.02 ´ 1023 iron atoms
    D. 1.9 ´ 1023 iron atoms
    E. 1.1 ´ 10–24 iron atoms

Bloom’s Level: 5. Evaluate
Difficulty: Medium
Gradable: automatic
Subtopic: The Mole (Definition and Avogadro’s Number)
Topic: Chemical Calculations

  1. How many moles of chloroethylene (C2H3Cl) contain 5.47 ´ 1026 molecules?
    A.3.29 ´ 1050 mol of C2H3Cl
    B. 5.47 ´ 1026 mol of C2H3Cl
    C. 909 mol of C2H3Cl
    D. 5450 mol of C2H3Cl

Bloom’s Level: 5. Evaluate
Difficulty: Medium
Gradable: automatic
Subtopic: The Mole (Definition and Avogadro’s Number)
Topic: Chemical Calculations

  1. What is the formula weight of KCl?
    A.74.55 amu
    B. 66.42 amu
    C. 36.00 amu
    D. 1386 amu

Bloom’s Level: 5. Evaluate
Difficulty: Easy
Gradable: automatic
Subtopic: Molar Mass
Topic: Chemical Calculations

 

  1. What is the formula weight of Co(NO3)3?
    A.88.94 amu
    B. 244.96 amu
    C. 216.94 amu
    D. 148.96 amu
    E. 196.96 amu

 

Bloom’s Level: 5. Evaluate
Difficulty: Medium
Gradable: automatic
Subtopic: Molar Mass
Topic: Chemical Calculations

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