Question 1

Atoms share electrons.

Accepted Answer

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

Question 2

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?

Accepted Answer

A) 5.96 g/cm3 
B) 2.98 g/cm3 
C) 2.98 * 10-6 g/cm3 
D) 5.96 * 10-30 g/cm3 
E) 11.9 g/cm3 
A) 5.96 g/cm3 
B) 2.98 g/cm3 
C) 2.98 * 10-6 g/cm3 
D) 5.96 * 10-30 g/cm3 
E) 11.9 g/cm3

Question 3

Which one of the following substances crystallizes as a covalent crystal?

Accepted Answer

A) CaO 
B) SiO2 
C) CO2 
D) Pb 
E) KMnO4 
A) CaO 
B) SiO2 
C) CO2 
D) Pb 
E) KMnO4

Question 4

Which of the following properties indicates the presence of strong intermolecular forces in a liquid?

Accepted Answer

A) a low heat of vaporization 
B) a low critical temperature 
C) a low vapor pressure 
D) a low boiling point 
E) None of the above. 
A) a low heat of vaporization 
B) a low critical temperature 
C) a low vapor pressure 
D) a low boiling point 
E) None of the above.

Question 5

Given the following compound and its boiling point, identify whether it is polar or nonpolar: HCl, -84.9°C.

Accepted Answer

The answer of Given the following compound and its boiling...

Question 6

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

Accepted Answer

A) SiH4 
B) H2 
C) H2S 
D) CH4 
E) CH3NH2 
A) SiH4 
B) H2 
C) H2S 
D) CH4 
E) CH3NH2

Question 7

Of the pair of compounds given, which would have the stronger intermolecular forces of attraction?
CH4 or CH3OH

Accepted Answer

Question 8

The meniscus for water is curved upward at the edges (i.e., it is "concave up"). Explain this phenomenon in terms of cohesion and adhesion.

Accepted Answer

Adhesion of water to

Question 9

Which one of the following is an example of a covalent network solid?

Accepted Answer

A) SiO2 
B) K 
C) I2 
D) CaCl2 
E) None of these. 
A) SiO2 
B) K 
C) I2 
D) CaCl2 
E) None of these.

Question 10

The mineral manganosite, manganese(II)oxide, crystallizes in the rock salt structure (the face-centered structure adopted by NaCl)with a density of 5.365 g/cm3. Find the unit cell edge length of manganosite.

Accepted Answer

A) 444.5 pm 
B) 352.8 pm 
C) 280.0 pm 
D) 368.2 pm 
E) 417.9 pm 
A) 444.5 pm 
B) 352.8 pm 
C) 280.0 pm 
D) 368.2 pm 
E) 417.9 pm

Question 11

Acetic acid has a heat of fusion of 10.8 kJ/mol and a heat of vaporization of 24.3 kJ/mol. What is the expected value for the heat of sublimation of acetic acid?

Accepted Answer

A) 35.1 kJ/mol 
B) -13.5 kJ/mol 
C) +13.5 kJ/mol 
D) -35.1 kJ/mol 
E) Not enough information is given to answer the question. 
A) 35.1 kJ/mol 
B) -13.5 kJ/mol 
C) +13.5 kJ/mol 
D) -35.1 kJ/mol 
E) Not enough information is given to answer the question.

Question 12

Which of the following would be expected to have the lowest vapor pressure at room temperature?

Accepted Answer

A) ethanol, bp = 78°C 
B) methanol, bp = 65°C 
C) water, bp = 100°C 
D) acetone, bp = 56°C 
A) ethanol, bp = 78°C 
B) methanol, bp = 65°C 
C) water, bp = 100°C 
D) acetone, bp = 56°C

Question 13

Magnesium oxide, MgO, melts at 2,800°C and is very hard. The liquid conducts electricity very well. What kind of crystal is this?

Accepted Answer

The answer of Magnesium oxide, MgO, melts at 2,800°C and...

Question 14

Indicate all the types of intermolecular forces of attraction in CHCl3(l).

Accepted Answer

dipole-dip

Question 15

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

Question 16

What phase exists at the point labeled c?

Accepted Answer

The answer of What phase exists at the point labeled...

Question 17

Calculate the amount of heat that must be absorbed by 10.0 g of ice at -20°C to convert it to liquid water at 60.0°C. Given: specific heat (ice)= 2.1 J/g·°C; specific heat (water)= 4.18 J/g·°C; $\Delta$Hfus = 6.0 kJ/mol.

Accepted Answer

A) 420 J 
B) 2,900 J 
C) 6,300 J 
D) 63 kJ 
E) 7.5 J 
A) 420 J 
B) 2,900 J 
C) 6,300 J 
D) 63 kJ 
E) 7.5 J

Question 18

Given the following compound and its boiling point, identify whether it is polar or nonpolar: Ar, -185.7°C.

Accepted Answer

The answer of Given the following compound and its boiling...

Atoms share electrons.

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?

Which one of the following substances crystallizes as a covalent crystal?

Which of the following properties indicates the presence of strong intermolecular forces in a liquid?

Given the following compound and its boiling point, identify whether it is polar or nonpolar: HCl, -84.9°C.

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

Of the pair of compounds given, which would have the stronger intermolecular forces of attraction? CH₄ or CH₃OH

The meniscus for water is curved upward at the edges (i.e., it is "concave up"). Explain this phenomenon in terms of cohesion and adhesion.

Which one of the following is an example of a covalent network solid?

The mineral manganosite, manganese(II)oxide, crystallizes in the rock salt structure (the face-centered structure adopted by NaCl)with a density of 5.365 g/cm³. Find the unit cell edge length of manganosite.

Acetic acid has a heat of fusion of 10.8 kJ/mol and a heat of vaporization of 24.3 kJ/mol. What is the expected value for the heat of sublimation of acetic acid?

Which of the following would be expected to have the lowest vapor pressure at room temperature?

Magnesium oxide, MgO, melts at 2,800°C and is very hard. The liquid conducts electricity very well. What kind of crystal is this?

Indicate all the types of intermolecular forces of attraction in CHCl₃(l).

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?

What phase exists at the point labeled c?

Calculate the amount of heat that must be absorbed by 10.0 g of ice at -20°C to convert it to liquid water at 60.0°C. Given: specific heat (ice)= 2.1 J/g·°C; specific heat (water)= 4.18 J/g·°C; $\Delta$ H_fus = 6.0 kJ/mol.

Given the following compound and its boiling point, identify whether it is polar or nonpolar: Ar, -185.7°C.

Introduction

Atoms, Molecules, and Ions

Stoichiometry

Reactions in Aqueous Solution

Gases

Energy Relationships in Chemical Reactions

The Electronic Structure of Atoms

The Periodic Table

Chemical Bonding I: the Covalent Bond

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Introduction to Organic Chemistry

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Thermodynamics

Redox Reactions and Electrochemistry

The Chemistry of Coordination Compounds

Nuclear Chemistry

Organic Polymerssynthetic and Natural

Filters

Exam 12: Intermolecular Forces and Liquids and Solids

Atoms share electrons.

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?

Which one of the following substances crystallizes as a covalent crystal?

Which of the following properties indicates the presence of strong intermolecular forces in a liquid?

Given the following compound and its boiling point, identify whether it is polar or nonpolar: HCl, -84.9°C.

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

Of the pair of compounds given, which would have the stronger intermolecular forces of attraction? CH4 or CH3OH

The meniscus for water is curved upward at the edges (i.e., it is "concave up"). Explain this phenomenon in terms of cohesion and adhesion.

Which one of the following is an example of a covalent network solid?

The mineral manganosite, manganese(II)oxide, crystallizes in the rock salt structure (the face-centered structure adopted by NaCl)with a density of 5.365 g/cm3. Find the unit cell edge length of manganosite.

Acetic acid has a heat of fusion of 10.8 kJ/mol and a heat of vaporization of 24.3 kJ/mol. What is the expected value for the heat of sublimation of acetic acid?

Which of the following would be expected to have the lowest vapor pressure at room temperature?

Magnesium oxide, MgO, melts at 2,800°C and is very hard. The liquid conducts electricity very well. What kind of crystal is this?

Indicate all the types of intermolecular forces of attraction in CHCl3(l).

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?

What phase exists at the point labeled c?

Calculate the amount of heat that must be absorbed by 10.0 g of ice at -20°C to convert it to liquid water at 60.0°C. Given: specific heat (ice)= 2.1 J/g·°C; specific heat (water)= 4.18 J/g·°C; Δ\DeltaΔ Hfus = 6.0 kJ/mol.

Given the following compound and its boiling point, identify whether it is polar or nonpolar: Ar, -185.7°C.

Introduction

Atoms, Molecules, and Ions

Stoichiometry

Reactions in Aqueous Solution

Gases

Energy Relationships in Chemical Reactions

The Electronic Structure of Atoms

The Periodic Table

Chemical Bonding I: the Covalent Bond

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Introduction to Organic Chemistry

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Thermodynamics

Redox Reactions and Electrochemistry

The Chemistry of Coordination Compounds

Nuclear Chemistry

Organic Polymerssynthetic and Natural

Filters

Of the pair of compounds given, which would have the stronger intermolecular forces of attraction? CH₄ or CH₃OH

The mineral manganosite, manganese(II)oxide, crystallizes in the rock salt structure (the face-centered structure adopted by NaCl)with a density of 5.365 g/cm³. Find the unit cell edge length of manganosite.

Indicate all the types of intermolecular forces of attraction in CHCl₃(l).

Calculate the amount of heat that must be absorbed by 10.0 g of ice at -20°C to convert it to liquid water at 60.0°C. Given: specific heat (ice)= 2.1 J/g·°C; specific heat (water)= 4.18 J/g·°C; $\Delta$ H_fus = 6.0 kJ/mol.