Question 1

How many atoms are in one body-centered cubic unit cell of a metal?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 2

Use the diagram below to answer the following questions.  
-According to the diagram,the solid phase of this substance

Accepted Answer

A) has the same density as the liquid phase. 
B) is less dense than water. 
C) is less dense than the liquid phase. 
D) is more dense than the liquid phase. 
A) has the same density as the liquid phase. 
B) is less dense than water. 
C) is less dense than the liquid phase. 
D) is more dense than the liquid phase.

Question 3

The vapor pressure of liquid chloroform,CHCl3,is 400.0 torr at 24.1°C and 100.0 torr at -6.3°C.What is ΔHvap of chloroform?

Accepted Answer

A) 15.3 kJ/mol 
B) 30.1 kJ/mol 
C) 57.6 kJ/mol 
D) 86.7 kJ/mol 
A) 15.3 kJ/mol 
B) 30.1 kJ/mol 
C) 57.6 kJ/mol 
D) 86.7 kJ/mol

Question 4

Identify the packing in the figure shown below.

Accepted Answer

A) body-centered cubic 
B) cubic closest packed (face-centered cubic) 
C) hexagonal closest packed 
D) simple cubic 
A) body-centered cubic 
B) cubic closest packed (face-centered cubic) 
C) hexagonal closest packed 
D) simple cubic

Question 5

The structure of a solid can be determined by diffraction of radiation in which region of the electromagnetic radiation spectrum?

Accepted Answer

A) infrared 
B) microwave 
C) visible 
D) X-ray 
A) infrared 
B) microwave 
C) visible 
D) X-ray

Question 6

How many Br- ions are around each Na+ ion in NaBr,which has a cubic unit cell with Br- ions on each corner and each face?

Accepted Answer

A) 1 
B) 4 
C) 6 
D) 8 
A) 1 
B) 4 
C) 6 
D) 8

Question 7

Chromium crystallizes in a body-centered cubic structure.What is the coordination number of each atom?

Accepted Answer

A) 4 
B) 6 
C) 8 
D) 12 
A) 4 
B) 6 
C) 8 
D) 12

Question 8

O2 and O3 are ________ of oxygen.

Accepted Answer

A) allotropes 
B) isomers 
C) isotopes 
D) stereomers 
A) allotropes 
B) isomers 
C) isotopes 
D) stereomers

Question 9

The picture shown below represents a two-dimensional lattice of atoms M and X.  
-Which of the areas designated A,B,and C are smallest repeating units,analogous to two-dimensional unit cells?

Accepted Answer

A) only A 
B) only B 
C) only C 
D) A,B,or C 
A) only A 
B) only B 
C) only C 
D) A,B,or C

Question 10

Palladium has a face-centered cubic structure and has a density of 12.023 g/cm3.What is its atomic radius?

Accepted Answer

A) 388 pm 
B) 151 pm 
C) 220 pm 
D) 245 pm 
A) 388 pm 
B) 151 pm 
C) 220 pm 
D) 245 pm

Question 11

A supercritical fluid refers to a substance

Accepted Answer

A) above both its critical temperature and its critical pressure. 
B) at its triple point. 
C) that is in the liquid crystal state. 
D) with a viscosity of zero. 
A) above both its critical temperature and its critical pressure. 
B) at its triple point. 
C) that is in the liquid crystal state. 
D) with a viscosity of zero.

Question 12

Which of the following liquids will exhibit the highest vapor pressure?

Accepted Answer

A) Br2,bp = 58.8°C 
B) CH3OH,bp = 64.7°C 
C) H2O,bp = 100°C 
D) All exhibit the same vapor pressure. 
A) Br2,bp = 58.8°C 
B) CH3OH,bp = 64.7°C 
C) H2O,bp = 100°C 
D) All exhibit the same vapor pressure.

Question 13

The property of a liquid that measure the liquid's resistance to spread out and increase its surface area is

Accepted Answer

A) sublimation point. 
B) heat of deposition. 
C) dipole-dipole forces. 
D) surface tension. 
A) sublimation point. 
B) heat of deposition. 
C) dipole-dipole forces. 
D) surface tension.

Question 14

CFC-11 (trichlorofluoromethane,CCl3F)has been used for many years as the working fluid in refrigerators.Given its heat of vaporization is 26.88 kJ/mol and its entropy of vaporization is 90.51 J/(mol ∙ K),what is the boiling point of CFC-11?

Accepted Answer

A) -272.9°C 
B) 0.297°C 
C) 2.44°C 
D) 23.8°C 
A) -272.9°C 
B) 0.297°C 
C) 2.44°C 
D) 23.8°C

Question 15

For the process: HNO3(g)⇌ HNO3(l),ΔH° is -39.04 kJ/mol and ΔS° is -111.74 J/(mol ∙ K).What is the normal boiling point of pure HNO3?

Accepted Answer

A) 2.86°C 
B) 76.2°C 
C) 270.3°C 
D) 349.4°C 
A) 2.86°C 
B) 76.2°C 
C) 270.3°C 
D) 349.4°C

Question 16

Which type of bonding does sucrose form upon solidification?

Accepted Answer

A) metallic 
B) amorphous 
C) molecular 
D) anionic 
A) metallic 
B) amorphous 
C) molecular 
D) anionic

Question 17

A certain metal crystallizes in a face-centered cubic structure.What is the edge length of the unit cell if the atomic radius of the metal is 134 pm?

Accepted Answer

A) 189 pm 
B) 268 pm 
C) 309 pm 
D) 379 pm 
A) 189 pm 
B) 268 pm 
C) 309 pm 
D) 379 pm

Question 18

Which of the following compounds has the highest boiling point?

Accepted Answer

A) CH3CH2OH 
B) HOCH2CH2OH 
C) H3C-O-CH3 
D) CH3CH2CH2CH3 
A) CH3CH2OH 
B) HOCH2CH2OH 
C) H3C-O-CH3 
D) CH3CH2CH2CH3

Question 19

A certain mineral crystallizes in the cubic unit cell shown below.M represents the cations and A represents the anions.What is the empirical formula of the mineral?

Accepted Answer

A) MA 
B) MA2 
C) M2A 
D) M4A4 
A) MA 
B) MA2 
C) M2A 
D) M4A4

Question 20

Which transition could occur if a solid is heated at a pressure above the triple point pressure?

Accepted Answer

A) vaporization 
B) deposition 
C) melting 
D) sublimation 
A) vaporization 
B) deposition 
C) melting 
D) sublimation

Exam 11: Liquids, solids, and Phase Changes

How many atoms are in one body-centered cubic unit cell of a metal?

Use the diagram below to answer the following questions. -According to the diagram,the solid phase of this substance

The vapor pressure of liquid chloroform,CHCl3,is 400.0 torr at 24.1°C and 100.0 torr at -6.3°C.What is ΔHvap of chloroform?

Identify the packing in the figure shown below.

The structure of a solid can be determined by diffraction of radiation in which region of the electromagnetic radiation spectrum?

How many Br- ions are around each Na+ ion in NaBr,which has a cubic unit cell with Br- ions on each corner and each face?

Chromium crystallizes in a body-centered cubic structure.What is the coordination number of each atom?

O2 and O3 are ________ of oxygen.

The picture shown below represents a two-dimensional lattice of atoms M and X. -Which of the areas designated A,B,and C are smallest repeating units,analogous to two-dimensional unit cells?

Palladium has a face-centered cubic structure and has a density of 12.023 g/cm3.What is its atomic radius?

A supercritical fluid refers to a substance

Which of the following liquids will exhibit the highest vapor pressure?

The property of a liquid that measure the liquid's resistance to spread out and increase its surface area is

CFC-11 (trichlorofluoromethane,CCl3F)has been used for many years as the working fluid in refrigerators.Given its heat of vaporization is 26.88 kJ/mol and its entropy of vaporization is 90.51 J/(mol ∙ K),what is the boiling point of CFC-11?

For the process: HNO3(g)⇌ HNO3(l),ΔH° is -39.04 kJ/mol and ΔS° is -111.74 J/(mol ∙ K).What is the normal boiling point of pure HNO3?

Which type of bonding does sucrose form upon solidification?

A certain metal crystallizes in a face-centered cubic structure.What is the edge length of the unit cell if the atomic radius of the metal is 134 pm?

Which of the following compounds has the highest boiling point?

A certain mineral crystallizes in the cubic unit cell shown below.M represents the cations and A represents the anions.What is the empirical formula of the mineral?

Which transition could occur if a solid is heated at a pressure above the triple point pressure?

Chemical Tools: Experimentation and Measurement

Atoms, molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

The vapor pressure of liquid chloroform,CHCl₃,is 400.0 torr at 24.1°C and 100.0 torr at -6.3°C.What is ΔH_vap of chloroform?

How many Br^- ions are around each Na⁺ ion in NaBr,which has a cubic unit cell with Br^- ions on each corner and each face?

O₂ and O₃ are ________ of oxygen.

Palladium has a face-centered cubic structure and has a density of 12.023 g/cm³.What is its atomic radius?

CFC-11 (trichlorofluoromethane,CCl₃F)has been used for many years as the working fluid in refrigerators.Given its heat of vaporization is 26.88 kJ/mol and its entropy of vaporization is 90.51 J/(mol ∙ K),what is the boiling point of CFC-11?

For the process: HNO₃(g)⇌ HNO₃(l),ΔH° is -39.04 kJ/mol and ΔS° is -111.74 J/(mol ∙ K).What is the normal boiling point of pure HNO₃?