Question 1

What is the hydroxyl ion (OH-) concentration of a solution of pH 8?

Accepted Answer

A)  8 M
B)  8 × 10-6 M
C)  0.01 M
D)  10-8 M
E)  10-6 MF) C) and E)
G) B) and E)

Question 2

The molar mass of glucose (C6H12O6) is 180 g/mol.Which of the following procedures should you carry out to make a 0.5 M solution of glucose?

Accepted Answer

A)  Dissolve 0.5 g of glucose in a small volume of water,and then add more water until the total volume of the solution is 1 L.
B)  Dissolve 90 g of glucose in a small volume of water,and then add more water until the total volume of the solution is 1 L.
C)  Dissolve 180 g of glucose in a small volume of water,and then add more water until the total volume of the solution is 1 L.
D)  Dissolve 0.5 g of glucose in 1 L of water.
E)  Dissolve 180 g of glucose in 0.5 L of water.F) A) and C)
G) All of the above

Question 3

Research indicates that acid precipitation can damage marine corals by

Accepted Answer

A)  buffering ocean waters.
B)  decreasing the H+ concentration in oceans.
C)  increasing the OH- concentration in oceans.
D)  decreasing the concentration of carbonate ions in oceans.
E)  decreasing the calcium ion concentration in oceans.F) A) and B)
G) D) and E)

Question 4

Unequal sharing of electrons between atoms will result in which of the following interactions?

Accepted Answer

A)  a nonpolar covalent bond
B)  a polar covalent bond
C)  an ionic bond
D)  a hydrophobic interactionE) A) and D)
F) All of the above

Question 5

What is the pH of a 10-3 M NaOH solution?

Accepted Answer

A)  pH 3
B)  pH 8
C)  pH 9
D)  pH 10
E)  pH 11F) All of the above
G) C) and D)

Question 6

Figure 2.6
-What results from the chemical reaction illustrated in Figure 2.6?

Accepted Answer

A)  formation of a covalent bond
B)  formation of an ionic bond
C)  formation of a hydrogen bond
D)  formation of an anion with a net charge of +1 and a cation with a net charge of -1E) None of the above
F) A) and D)

Question 7

Molybdenum has an atomic number of 42.Several common isotopes exist,with mass numbers of 92,94,95,96,97,98,and 100.Therefore,which of the following is true?

Accepted Answer

A)  The isotopes of molybdenum can have between 50 and 58 neutrons.
B)  The isotopes of molybdenum have different numbers of valence electrons.
C)  The isotopes of molybdenum can have between 50 and 58 protons.
D)  The isotopes of molybdenum can have between 92 and 100 electrons.E) B) and C)
F) None of the above

Question 8

Consider two solutions: solution X has a pH of 4;solution Y has a pH of 7.From this information,we can reasonably conclude that

Accepted Answer

A)  solution Y has no free hydrogen ions (H+) because the solution is neutral.
B)  the concentration of hydrogen ions in solution X is 30 times greater than the concentration of hydrogen ions in solution Y.
C)  the concentration of hydrogen ions in solution Y is 1,000 times greater than the concentration of hydrogen ions in solution X.
D)  the concentration of hydrogen ions in solution X is 3 times greater than the concentration of hydrogen ions in solution Y.
E)  the concentration of hydrogen ions in solution X is 1,000 times greater than the concentration of hydrogen ions in solution Y.F) A) and C)
G) A) and D)

Question 9

The atomic number of sulfur is 16,which indicates that a sulfur atom contains

Accepted Answer

A)  16 neutrons.
B)  16 protons.
C)  16 protons and 16 neutrons.
D)  8 electrons in its outermost electron shell.
E)  8 protons and 8 neutrons.F) None of the above
G) D) and E)

Question 10

Figure 2.1
Which of the following best describes the relationship between the atoms described in Figure 2.1?

Accepted Answer

A)  They are compounds.
B)  They are polymers.
C)  They are isotopes.
D)  They contain 1 and 3 protons,respectively.
E)  They each contain 1 neutron.F) A) and E)
G) C) and D)

Question 11

In ammonium chloride salt (NH4Cl) ,the anion is a single chloride ion, (Cl¯) .What is the cation of NH4Cl salt?

Accepted Answer

A)  N,with a charge of +1
B)  NH,with a charge of +1
C)  H3,with a charge of +1
D)  NH4,with a charge of +1
E)  NH4,with a charge of +4F) A) and B)
G) B) and D)

Question 12

The chemical behavior of an atom depends primarily upon which of the following?

Accepted Answer

A)  the number of neutrons in the nucleus
B)  the number of protons in the nucleus
C)  the number of electrons in the valence shell
D)  the total number of electrons contained by the atom
E)  the number of electron shells contained by the atomF) A) and B)
G) C) and D)

Question 13

An equal volume (5 mL) of milk of magnesia from a freshly opened bottle is added to each of the following solutions.After complete mixing,which of the mixtures will have the lowest pH?

Accepted Answer

A)  100 mL of pure water
B)  100 mL of freshly brewed coffee
C)  100 mL of household cleanser containing 0.5 M ammonia
D)  100 mL of freshly squeezed lemon juice
E)  100 mL of household cleanser containing 0.5 M bleachF) A) and B)
G) A) and C)

Question 14

Carbon dioxide (CO2) is readily soluble in water,according to the equation CO2 + H2O ↔ H2CO3.Carbonic acid (H2CO3) is a weak acid.If CO2 is bubbled into a beaker containing pure,freshly distilled water,which of the following graphs correctly describes the results?

Accepted Answer

A)  2) is readily soluble in water,according to the equation CO2 + H2O ↔ H2CO3.Carbonic acid (H2CO3) is a weak acid.If CO2 is bubbled into a beaker containing pure,freshly distilled water,which of the following graphs correctly describes the results? 
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D)  2) is readily soluble in water,according to the equation CO2 + H2O ↔ H2CO3.Carbonic acid (H2CO3) is a weak acid.If CO2 is bubbled into a beaker containing pure,freshly distilled water,which of the following graphs correctly describes the results? 
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E)  2) is readily soluble in water,according to the equation CO2 + H2O ↔ H2CO3.Carbonic acid (H2CO3) is a weak acid.If CO2 is bubbled into a beaker containing pure,freshly distilled water,which of the following graphs correctly describes the results? 
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G) C) and D)

Question 15

Buffers are substances that help resist shifts in pH by

Accepted Answer

A)  releasing H+ to a solution when acids are added.
B)  accepting OH- from a solution when bases are added.
C)  releasing OH- to a solution when bases are added.
D)  accepting H+ from a solution when acids are added.
E)  accepting OH- from a solution when acids are added.F) A) and D)
G) C) and D)

Exam 2: The Chemical Context of Life

Figure 2.6 -What results from the chemical reaction illustrated in Figure 2.6?

Correct Answer
verified

The atomic number of sulfur is 16,which indicates that a sulfur atom contains

Correct Answer
verified

In ammonium chloride salt (NH₄Cl) ,the anion is a single chloride ion, (Cl¯) .What is the cation of NH₄Cl salt?

Correct Answer
verified

What is the pH of a 10^-3 M NaOH solution?

Correct Answer
verified

Molybdenum has an atomic number of 42.Several common isotopes exist,with mass numbers of 92,94,95,96,97,98,and 100.Therefore,which of the following is true?

Correct Answer
verified

Consider two solutions: solution X has a pH of 4;solution Y has a pH of 7.From this information,we can reasonably conclude that

Correct Answer
verified

Figure 2.1 Which of the following best describes the relationship between the atoms described in Figure 2.1?

Correct Answer
verified

Research indicates that acid precipitation can damage marine corals by

Correct Answer
verified

What is the hydroxyl ion (OH^-) concentration of a solution of pH 8?

Correct Answer
verified

Carbon dioxide (CO₂) is readily soluble in water,according to the equation CO₂ + H₂O ↔ H₂CO₃.Carbonic acid (H₂CO₃) is a weak acid.If CO₂ is bubbled into a beaker containing pure,freshly distilled water,which of the following graphs correctly describes the results?

Correct Answer
verified

An equal volume (5 mL) of milk of magnesia from a freshly opened bottle is added to each of the following solutions.After complete mixing,which of the mixtures will have the lowest pH?

Correct Answer
verified

Buffers are substances that help resist shifts in pH by

Correct Answer
verified

Unequal sharing of electrons between atoms will result in which of the following interactions?

Correct Answer
verified

The chemical behavior of an atom depends primarily upon which of the following?

Correct Answer
verified

The molar mass of glucose (C₆H₁₂O₆) is 180 g/mol.Which of the following procedures should you carry out to make a 0.5 M solution of glucose?

Correct Answer
verified

Exam 2: The Chemical Context of Life

Figure 2.6 -What results from the chemical reaction illustrated in Figure 2.6?

Correct AnswerverifiedShow Answer

The atomic number of sulfur is 16,which indicates that a sulfur atom contains

Correct AnswerverifiedShow Answer

In ammonium chloride salt (NH4Cl) ,the anion is a single chloride ion, (Cl¯) .What is the cation of NH4Cl salt?

Correct AnswerverifiedShow Answer

What is the pH of a 10-3 M NaOH solution?

Correct AnswerverifiedShow Answer

Molybdenum has an atomic number of 42.Several common isotopes exist,with mass numbers of 92,94,95,96,97,98,and 100.Therefore,which of the following is true?

Correct AnswerverifiedShow Answer

Consider two solutions: solution X has a pH of 4;solution Y has a pH of 7.From this information,we can reasonably conclude that

Correct AnswerverifiedShow Answer

Figure 2.1 Which of the following best describes the relationship between the atoms described in Figure 2.1?

Correct AnswerverifiedShow Answer

Research indicates that acid precipitation can damage marine corals by

Correct AnswerverifiedShow Answer

What is the hydroxyl ion (OH-) concentration of a solution of pH 8?

Correct AnswerverifiedShow Answer

Carbon dioxide (CO2) is readily soluble in water,according to the equation CO2 + H2O ↔ H2CO3.Carbonic acid (H2CO3) is a weak acid.If CO2 is bubbled into a beaker containing pure,freshly distilled water,which of the following graphs correctly describes the results?

Correct AnswerverifiedShow Answer

An equal volume (5 mL) of milk of magnesia from a freshly opened bottle is added to each of the following solutions.After complete mixing,which of the mixtures will have the lowest pH?

Correct AnswerverifiedShow Answer

Buffers are substances that help resist shifts in pH by

Correct AnswerverifiedShow Answer

Unequal sharing of electrons between atoms will result in which of the following interactions?

Correct AnswerverifiedShow Answer

The chemical behavior of an atom depends primarily upon which of the following?

Correct AnswerverifiedShow Answer

The molar mass of glucose (C6H12O6) is 180 g/mol.Which of the following procedures should you carry out to make a 0.5 M solution of glucose?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

In ammonium chloride salt (NH₄Cl) ,the anion is a single chloride ion, (Cl¯) .What is the cation of NH₄Cl salt?

Correct Answer
verified

What is the pH of a 10^-3 M NaOH solution?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What is the hydroxyl ion (OH^-) concentration of a solution of pH 8?

Correct Answer
verified

Carbon dioxide (CO₂) is readily soluble in water,according to the equation CO₂ + H₂O ↔ H₂CO₃.Carbonic acid (H₂CO₃) is a weak acid.If CO₂ is bubbled into a beaker containing pure,freshly distilled water,which of the following graphs correctly describes the results?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The molar mass of glucose (C₆H₁₂O₆) is 180 g/mol.Which of the following procedures should you carry out to make a 0.5 M solution of glucose?

Correct Answer
verified