Question 1

The number of atoms in a face-centered cubic unit cell is

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  8F) A) and D)
G) B) and D)

Question 2

Indicate all the types of intermolecular forces of attraction in HF(l).

Accepted Answer

hydrogen b...

Question 3

Which property of water allows a razor blade to float on it without sinking?

Accepted Answer

A)  viscosity
B)  surface tension
C)  density
D)  specific heat
E)  triple pointF) B) and D)
G) B) and E)

Question 4

Arrange the following in order of increasing boiling point: RbCl, CH3Cl, CH3OH, CH4.

Accepted Answer

A)  CH3OH 3Cl 4
B)  CH3OH 4 3Cl 
C)  RbCl 3Cl 3OH 4
D)  CH4 3OH 3Cl 
E)  CH4 3Cl 3OH < RbClF) B) and E)
G) C) and D)

Question 5

Which one of the following substances will have both dispersion forces and dipole-dipole forces?

Accepted Answer

A)  HCl
B)  BCl3
C)  Br2
D)  H2
E)  CO2F) B) and E)
G) A) and D)

Question 6

Atoms share electrons.

Accepted Answer

A)  1 and 4
B)  1 and 3
C)  2 and 3
D)  2 and 4
E)  3 and 4F) B) and D)
G) A) and E)

Question 7

Of the given pair of compounds, which would have the higher boiling point?
CCl4 or CH4

Accepted Answer

Question 8

For which of the following species are the intermolecular interactions entirely due to dispersion forces?

Accepted Answer

A)  C2H6
B)  CH3OCH3
C)  NO2
D)  H2S
E)  CaNO3F) B) and E)
G) A) and E)

Question 9

The molar enthalpy of vaporization of boron tribromide is 30.5 kJ/mol, and its normal boiling point is 91°C. What is the vapor pressure of BBr3 at 20°C?

Accepted Answer

A)  11.5 torr
B)  311 torr
C)  5.31 torr
D)  143 torr
E)  66.1 torrF) C) and E)
G) A) and D)

Question 10

What mass of water would need to evaporate from your skin in order to dissipate 1.7 * 105 J of heat from your body? H2O(l)  →\rarr→ H2O(g)  Δ\DeltaΔ Hvap = 40.7 kJ/mol

Accepted Answer

A)  7.52 * 104 g
B)  418 g
C)  75.2 g
D)  58.4 g
E)  6.92 * 106 g F) B) and D)
G) A) and C)

Question 11

The heat capacity of liquid water is 4.18 J/g·°C and the heat of vaporization is 40.7 kJ/mol. How many kilojoules of heat must be provided to convert 1.00 g of liquid water at 67°C into 1.00 g of steam at 100°C?

Accepted Answer

A)  22.7 kJ
B)  40.8 kJ
C)  2.2 kJ
D)  2,400 J
E)  40.8 JF) C) and D)
G) C) and E)

Question 12

Each of the following substances is a gas at 25°C and 1 atmosphere pressure. Which one will liquefy most easily when compressed at a constant temperature?

Accepted Answer

A)  F2
B)  H2
C)  HF
D)  SiH4
E)  ArF) A) and B)
G) None of the above

Question 13

Which of the following is not an endothermic process?

Accepted Answer

A)  melting of a solid
B)  vaporization
C)  raising the temperature of a gas
D)  condensation of water vapor
E)  sublimation of dry iceF) A) and B)
G) C) and D)

Question 14

The number of nearest neighbors (atoms that make contact) around each atom in a face-centered cubic lattice of a metal is

Accepted Answer

A)  2
B)  4
C)  6
D)  8
E)  12F) D) and E)
G) B) and C)

Question 15

Which one of the following substances is expected to have the lowest melting point?

Accepted Answer

A)  BrI
B)  CsI
C)  LiI
D)  NaI
E)  RbIF) B) and D)
G) B) and C)

Question 16

Which one of the following substances should exhibit hydrogen bonding in the liquid state?

Accepted Answer

A)  PH3
B)  H2
C)  H2S
D)  CH4
E)  NH3F) C) and D)
G) B) and E)

Question 17

Choose the response that lists the member of each of the following pairs that has the higher boiling point. (I) H2O or KI (II) HF or HI (III) Cl2 or Br2

Accepted Answer

A)  H2O, HF, and Cl2
B)  KI, HF, and Br2
C)  KI, HI, and Br2
D)  H2O, HI, and Cl2
E)  KI, HF, and Cl2F) A) and D)
G) B) and D)

Question 18

Sodium iodide, NaI, melts at 651°C. In its liquid state NaI conducts electricity. What kind of crystal is this?

Accepted Answer

The answer of Sodium iodide, NaI, melts at 651°C. In...

Question 19

Iron crystallizes in a body-centered cubic unit. The edge of this cell is 287 pm. Calculate the density of iron.

Accepted Answer

The answer of Iron crystallizes in a body-centered cubic unit....

Question 20

Indicate all the types of intermolecular forces of attraction in CH3OH(l).

Accepted Answer

hydrogen b...

Exam 11: Intermolecular Forces and Liquids and Solids

Atoms share electrons.

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Which property of water allows a razor blade to float on it without sinking?

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For which of the following species are the intermolecular interactions entirely due to dispersion forces?

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Which one of the following substances is expected to have the lowest melting point?

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The heat capacity of liquid water is 4.18 J/g·°C and the heat of vaporization is 40.7 kJ/mol. How many kilojoules of heat must be provided to convert 1.00 g of liquid water at 67°C into 1.00 g of steam at 100°C?

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The molar enthalpy of vaporization of boron tribromide is 30.5 kJ/mol, and its normal boiling point is 91°C. What is the vapor pressure of BBr3 at 20°C?

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Arrange the following in order of increasing boiling point: RbCl, CH3Cl, CH3OH, CH4.

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The number of atoms in a face-centered cubic unit cell is

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Which one of the following substances will have both dispersion forces and dipole-dipole forces?

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Each of the following substances is a gas at 25°C and 1 atmosphere pressure. Which one will liquefy most easily when compressed at a constant temperature?

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Indicate all the types of intermolecular forces of attraction in CH3OH(l).

Correct Answerverifiedhydrogen b...View AnswerShow Answer

What mass of water would need to evaporate from your skin in order to dissipate 1.7 * 105 J of heat from your body? H2O(l) →\rarr→ H2O(g) Δ\DeltaΔ Hvap = 40.7 kJ/mol

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Which of the following is not an endothermic process?

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Indicate all the types of intermolecular forces of attraction in HF(l).

Correct Answerverifiedhydrogen b...View AnswerShow Answer

Which one of the following substances should exhibit hydrogen bonding in the liquid state?

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Choose the response that lists the member of each of the following pairs that has the higher boiling point. (I) H2O or KI (II) HF or HI (III) Cl2 or Br2

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Of the given pair of compounds, which would have the higher boiling point? CCl4 or CH4

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Sodium iodide, NaI, melts at 651°C. In its liquid state NaI conducts electricity. What kind of crystal is this?

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The number of nearest neighbors (atoms that make contact) around each atom in a face-centered cubic lattice of a metal is

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Iron crystallizes in a body-centered cubic unit. The edge of this cell is 287 pm. Calculate the density of iron.

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The molar enthalpy of vaporization of boron tribromide is 30.5 kJ/mol, and its normal boiling point is 91°C. What is the vapor pressure of BBr₃ at 20°C?

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Arrange the following in order of increasing boiling point: RbCl, CH₃Cl, CH₃OH, CH₄.

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Indicate all the types of intermolecular forces of attraction in CH₃OH(l).

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hydrogen b...
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What mass of water would need to evaporate from your skin in order to dissipate 1.7 * 10⁵ J of heat from your body? H₂O(l) $\rarr$ H₂O(g) $\Delta$ H_vap = 40.7 kJ/mol

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hydrogen b...
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Choose the response that lists the member of each of the following pairs that has the higher boiling point. (I) H₂O or KI (II) HF or HI (III) Cl₂ or Br₂

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Of the given pair of compounds, which would have the higher boiling point? CCl₄ or CH₄

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