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What name is given to a quantitative measure of the elastic force in the surface of a liquid?


A) Surface tension
B) Adhesion
C) Polarity
D) Capillary action
E) Cohesion

F) B) and D)
G) A) and E)

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Vanadium crystallizes in a body-centered cubic lattice, and the length of the edge of a unit cell is 305 pm. What is the density of V?


A) 0.712 g/cm3
B) 2.98 g/cm3
C) 5.96 g/cm3
D) 8.77 g/cm3
E) 11.9 g/cm3

F) B) and C)
G) C) and E)

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________ ________ are the attractions that hold particles together in condensed phases.

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Intermolec...

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One of the crystalline forms of zinc oxide is a structure where the oxygen atoms are at the lattice points in a face-centered cubic lattice. How many atoms are in each unit cell?


A) 2
B) 4
C) 6
D) 8
E) 10

F) All of the above
G) A) and D)

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How much energy (heat) is required to convert 52.0 g of ice at -10.0°C to steam at 100°C? How much energy (heat) is required to convert 52.0 g of ice at -10.0°C to steam at 100°C? A) 12.0 kJ B) 23.0 kJ C) 46.4 kJ D) 158 kJ E) 2.30 × 10<sup>4</sup> kJ


A) 12.0 kJ
B) 23.0 kJ
C) 46.4 kJ
D) 158 kJ
E) 2.30 × 104 kJ

F) B) and E)
G) A) and D)

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If a molecule at the surface of a liquid has enough kinetic energy to escape the liquid phase and enter the gas phase, then which of the following terms is used to describe this phenomenon?


A) Boiling point
B) Condensation
C) Vaporization
D) Sublimation
E) Gasification

F) D) and E)
G) A) and B)

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Octane is a liquid component of gasoline. Given the following vapor pressures of octane at various temperatures, estimate the boiling point of octane in Leadville, Colorado, where the atmospheric pressure is 496 mmHg. (R = 8.314 J/K • mol) Octane is a liquid component of gasoline. Given the following vapor pressures of octane at various temperatures, estimate the boiling point of octane in Leadville, Colorado, where the atmospheric pressure is 496 mmHg. (R = 8.314 J/K • mol) A) 125°C B) 120°C C) 115°C D) 110°C E) 105°C


A) 125°C
B) 120°C
C) 115°C
D) 110°C
E) 105°C

F) All of the above
G) C) and E)

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Select the pair of substances in which the one with the lower vapor pressure at a given temperature is listed first.


A) Select the pair of substances in which the one with the lower vapor pressure at a given temperature is listed first. A) B) PH<sub>3</sub>, NH<sub>3</sub> C) CF<sub>4</sub>, CBr<sub>4</sub> D) C<sub>3</sub>H<sub>8</sub>, C<sub>4</sub>H<sub>10</sub> E) F<sub>2</sub>, Cl<sub>2</sub>
B) PH3, NH3
C) CF4, CBr4
D) C3H8, C4H10
E) F2, Cl2

F) D) and E)
G) A) and C)

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Which would be expected to have the highest surface tension at room temperature?


A) CH4
B) CF4
C) CCl4
D) CBr4
E) CI4

F) All of the above
G) C) and E)

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A) 34.7 kJ/mol B) 21.9 kJ/mol C) 3.45 kJ/mol D) 712 J/mol E) 9.99 kJ/mol A) 34.7 kJ/mol B) 21.9 kJ/mol C) 3.45 kJ/mol D) 712 J/mol E) 9.99 kJ/mol


A) 34.7 kJ/mol
B) 21.9 kJ/mol
C) 3.45 kJ/mol
D) 712 J/mol
E) 9.99 kJ/mol

F) A) and B)
G) D) and E)

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What is the intermolecular force that exists between a magnesium ion and hydrogen sulfide?


A) dipole-dipole forces
B) London dispersion forces
C) ionic bonding
D) ion-dipole forces
E) ion-ion forces

F) B) and D)
G) A) and E)

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Which of the following is defined as the attractive forces between polar molecules? Which of the following is defined as the attractive forces between polar molecules? A) I and III B) II only C) III only D) I, II, and III E) I only


A) I and III
B) II only
C) III only
D) I, II, and III
E) I only

F) C) and D)
G) B) and C)

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Octane, C8H18, boils at 125°C, whereas water boils at 100°C. This information suggests that the dispersion forces in nonpolar octane molecules are stronger than the dispersion forces and hydrogen bonding in water.

A) True
B) False

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If liquid bromine is cooled to form a solid, which type of solid does it form?


A) atomic
B) metallic
C) molecular
D) ionic
E) covalent

F) A) and E)
G) C) and D)

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Below is a representation of liquid water in equilibrium with its water vapor in a rigid container at 35ºC. The circles represent water vapor. Below is a representation of liquid water in equilibrium with its water vapor in a rigid container at 35ºC. The circles represent water vapor. Which diagram below best represents liquid water in equilibrium with its water vapor at 70ºC? The heat of vaporization of water is 40.7 kJ/mol. (R = 8.314 J/K • mol) A) B) C) D) E) Which diagram below best represents liquid water in equilibrium with its water vapor at 70ºC? The heat of vaporization of water is 40.7 kJ/mol. (R = 8.314 J/K • mol)


A) Below is a representation of liquid water in equilibrium with its water vapor in a rigid container at 35ºC. The circles represent water vapor. Which diagram below best represents liquid water in equilibrium with its water vapor at 70ºC? The heat of vaporization of water is 40.7 kJ/mol. (R = 8.314 J/K • mol) A) B) C) D) E)
B) Below is a representation of liquid water in equilibrium with its water vapor in a rigid container at 35ºC. The circles represent water vapor. Which diagram below best represents liquid water in equilibrium with its water vapor at 70ºC? The heat of vaporization of water is 40.7 kJ/mol. (R = 8.314 J/K • mol) A) B) C) D) E)
C) Below is a representation of liquid water in equilibrium with its water vapor in a rigid container at 35ºC. The circles represent water vapor. Which diagram below best represents liquid water in equilibrium with its water vapor at 70ºC? The heat of vaporization of water is 40.7 kJ/mol. (R = 8.314 J/K • mol) A) B) C) D) E)
D) Below is a representation of liquid water in equilibrium with its water vapor in a rigid container at 35ºC. The circles represent water vapor. Which diagram below best represents liquid water in equilibrium with its water vapor at 70ºC? The heat of vaporization of water is 40.7 kJ/mol. (R = 8.314 J/K • mol) A) B) C) D) E)
E) Below is a representation of liquid water in equilibrium with its water vapor in a rigid container at 35ºC. The circles represent water vapor. Which diagram below best represents liquid water in equilibrium with its water vapor at 70ºC? The heat of vaporization of water is 40.7 kJ/mol. (R = 8.314 J/K • mol) A) B) C) D) E)

F) A) and B)
G) B) and E)

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The triple point of iodine is at 0.12 atm and 115°C. Thus, liquid I2


A) is more dense than I2(s) .
B) cannot exist above 115°C.
C) is liquid at room temperature.
D) cannot have a vapor pressure less than 91 torr.
E) sublimes at high pressure.

F) A) and E)
G) B) and E)

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Which of the following pure substances has the strongest dispersion forces?


A) C4H10
B) C5H12
C) C6H14
D) C7H16
E) C8H18

F) A) and B)
G) All of the above

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What is the attractive force between like molecules involved in capillary action?


A) Surface tension
B) Adhesion
C) Polarity
D) Viscosity
E) Cohesion

F) B) and D)
G) B) and E)

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Polyethylene plastic consists of long chains of carbon atoms, each of which is also bonded to hydrogens as shown below: Polyethylene plastic consists of long chains of carbon atoms, each of which is also bonded to hydrogens as shown below: Water forms beads when placed on a polyethylene surface. Why? Water forms beads when placed on a polyethylene surface. Why?

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Water is highly polar and poly...

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What is the name given for the attraction between unlike molecules involved in capillary action?


A) Adhesion
B) Ionization
C) Cohesion
D) Surface tension
E) Viscosity

F) B) and E)
G) A) and E)

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