Question 1

Gold crystallizes in a face-centered cubic structure.What is the edge length of the unit cell if the atomic radius of gold is 144 pm?

Accepted Answer

A) 204 pm 
B) 288 pm 
C) 333 pm 
D) 407 pm 
A) 204 pm 
B) 288 pm 
C) 333 pm 
D) 407 pm

Question 2

The fluorocarbon C2Cl3F3 has a normal boiling point of 47.6°C.The specific heats of C2Cl3F3(l)and C2Cl3F3(g)are 0.91 J/g∙K and 0.67 J/g∙K,respectively.The heat of vaporization of the compound is 27.49 kJ/mol.The heat required to convert 50.0 g of the compound from the liquid at 50.0°C to the gas at 80.0°C is ________ kJ.

Accepted Answer

A) 8.19 
B) 1454 
C) 30.51 
D) 3031 
E) 10.36 
A) 8.19 
B) 1454 
C) 30.51 
D) 3031 
E) 10.36

Question 3

Choose the pair of substances that are most likely to form a homogeneous solution.

Accepted Answer

A) CCl4 and SCl2 
B) NF3 and SO2 
C) CO and C6H6 
D) NH2CH3 and CH4 
E) None of the pairs above will form a homogeneous solution. 
A) CCl4 and SCl2 
B) NF3 and SO2 
C) CO and C6H6 
D) NH2CH3 and CH4 
E) None of the pairs above will form a homogeneous solution.

Question 4

Place the following substances in order of increasing boiling point.
CH3CH2OH Ar CH3OCH3

Accepted Answer

A) Ar 3OCH3  3CH2OH 
B) CH3CH2OH 3OCH3 
C) CH3CH2OH 3OCH3 3OCH3 3CH2OH 
E) Ar 3CH2OH 3OCH3  
A) Ar 3OCH3  3CH2OH 
B) CH3CH2OH 3OCH3 
C) CH3CH2OH 3OCH3 3OCH3 3CH2OH 
E) Ar 3CH2OH 3OCH3

Question 5

How much energy is required to vaporize 158 g of butane (C4H10)at its boiling point,if its ΔHvap is 24.3 kJ/mol?

Accepted Answer

A) 15.1 kJ 
B) 66.1 kJ 
C) 89.4 kJ 
D) 11.2 kJ 
E) 38.4 kJ 
A) 15.1 kJ 
B) 66.1 kJ 
C) 89.4 kJ 
D) 11.2 kJ 
E) 38.4 kJ

Question 6

Why is water an extraordinary substance?

Accepted Answer

A) Water has a low molar mass,yet it is a liquid at room temperature. 
B) Water is the main solvent within living organisms. 
C) Water has an exceptionally high specific heat capacity. 
D) Water has strong hydrogen bonding. 
E) All of the above 
A) Water has a low molar mass,yet it is a liquid at room temperature. 
B) Water is the main solvent within living organisms. 
C) Water has an exceptionally high specific heat capacity. 
D) Water has strong hydrogen bonding. 
E) All of the above

Question 7

Calculate the vapor pressure of methanol at 40.0°C from the data given below:
Enthalpy of vaporization (∆Hvap = 35.2 kJ/mol;boiling point = 64.6°C;
Vapor pressure at 64.6°C = 760 torr)

Accepted Answer

A) 760 torr 
B) 283 torr 
C) 730 torr 
D) 780 torr 
A) 760 torr 
B) 283 torr 
C) 730 torr 
D) 780 torr

Question 8

Cesium has a radius of 272 pm and crystallizes in a body-centered cubic structure.What is the edge length of the unit cell?

Accepted Answer

A) 314 pm 
B) 385 pm 
C) 544 pm 
D) 628 pm 
A) 314 pm 
B) 385 pm 
C) 544 pm 
D) 628 pm

Question 9

Choose the substance with the lowest vapor pressure at a given temperature.

Accepted Answer

A) CO2 
B) BeCl2 
C) BF3 
D) He 
E) PF5 
A) CO2 
B) BeCl2 
C) BF3 
D) He 
E) PF5

Question 10

Match the following.
-CH3OH

Accepted Answer

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

Question 11

What is the strongest type of intermolecular force present in NH2CH3?

Accepted Answer

A) dispersion 
B) dipole-dipole 
C) hydrogen bonding 
D) ion-dipole 
E) None of the above 
A) dispersion 
B) dipole-dipole 
C) hydrogen bonding 
D) ion-dipole 
E) None of the above

Question 12

Determine the radius of an Al atom (in pm)if the density of aluminum is 2.71 g/cm3.Aluminum crystallizes in a face centered cubic structure with an edge length of 2  
R.

Accepted Answer

A) 143 pm 
B) 227 pm 
C) 96 pm 
D) 172 pm 
E) 193 pm 
A) 143 pm 
B) 227 pm 
C) 96 pm 
D) 172 pm 
E) 193 pm

Question 13

Why do O,F and N,when bonded to H,form such strong intermolecular attractions to neighboring molecules? Make sure to be specific.

Accepted Answer

Oxygen,fluorine and nitrogen are all ver

Question 14

Identify the characteristics of a liquid.

Accepted Answer

A) indefinite shape and volume 
B) indefinite shape,but definite volume 
C) definite shape and volume 
D) none of the above 
E) all of the above 
A) indefinite shape and volume 
B) indefinite shape,but definite volume 
C) definite shape and volume 
D) none of the above 
E) all of the above

Question 15

Which has the highest boiling point?

Accepted Answer

A) CH3OH 
B) CH3NH2 
C) CO 
D) N2 
A) CH3OH 
B) CH3NH2 
C) CO 
D) N2

Question 16

Which type of bonding does Sr form upon solidification?

Accepted Answer

A) covalent network 
B) ionic 
C) metallic 
D) molecular 
A) covalent network 
B) ionic 
C) metallic 
D) molecular

Question 17

Place the following compounds in order of increasing strength of intermolecular forces.
CH4 CH3CH2CH3 CH3CH3

Accepted Answer

A) CH3CH2CH3 4 3CH3 
B) CH3CH2CH3 3CH3 4 
C) CH3CH3 4 3CH2CH3 
D) CH4 3CH2CH3 3CH3 
E) CH4 3CH3 3CH2CH3 
A) CH3CH2CH3 4 3CH3 
B) CH3CH2CH3 3CH3 4 
C) CH3CH3 4 3CH2CH3 
D) CH4 3CH2CH3 3CH3 
E) CH4 3CH3 3CH2CH3

Question 18

Identify triple point.

Accepted Answer

A) The temperature,pressure,and density for a gas. 
B) The temperature at which the boiling point equals the melting point. 
C) The temperature and pressure where liquid,solid,and gas are equally stable and are in equilibrium. 
D) The temperature that is unique for a substance. 
E) The temperature at which the solid and liquid co-exist. 
A) The temperature,pressure,and density for a gas. 
B) The temperature at which the boiling point equals the melting point. 
C) The temperature and pressure where liquid,solid,and gas are equally stable and are in equilibrium. 
D) The temperature that is unique for a substance. 
E) The temperature at which the solid and liquid co-exist.

Question 19

The heat of vaporization of water at 100°C is 40.66 kJ/mol.Calculate the quantity of heat that is absorbed/released when 9.00 g of steam condenses to liquid water at 100°C.

Accepted Answer

A) 20.3 kJ of heat are absorbed. 
B) 20.3 kJ of heat are released. 
C) 81.3 kJ of heat are absorbed. 
D) 81.3 kJ of heat are released. 
A) 20.3 kJ of heat are absorbed. 
B) 20.3 kJ of heat are released. 
C) 81.3 kJ of heat are absorbed. 
D) 81.3 kJ of heat are released.

Question 20

Choose the substance with the highest surface tension.

Accepted Answer

A) HOCH2CH2OH 
B) CH2F2 
C) CH3CH2F 
D) CH3CH2OH 
E) CH3CH2CH3 
A) HOCH2CH2OH 
B) CH2F2 
C) CH3CH2F 
D) CH3CH2OH 
E) CH3CH2CH3

Gold crystallizes in a face-centered cubic structure.What is the edge length of the unit cell if the atomic radius of gold is 144 pm?

Choose the pair of substances that are most likely to form a homogeneous solution.

Place the following substances in order of increasing boiling point. CH₃CH₂OH Ar CH₃OCH₃

How much energy is required to vaporize 158 g of butane (C₄H₁₀)at its boiling point,if its ΔH_vap is 24.3 kJ/mol?

Why is water an extraordinary substance?

Calculate the vapor pressure of methanol at 40.0°C from the data given below: Enthalpy of vaporization (∆H_vap= 35.2 kJ/mol;boiling point = 64.6°C; Vapor pressure at 64.6°C = 760 torr)

Cesium has a radius of 272 pm and crystallizes in a body-centered cubic structure.What is the edge length of the unit cell?

Choose the substance with the lowest vapor pressure at a given temperature.

Match the following. -CH₃OH

What is the strongest type of intermolecular force present in NH₂CH₃?

Determine the radius of an Al atom (in pm)if the density of aluminum is 2.71 g/cm³.Aluminum crystallizes in a face centered cubic structure with an edge length of 2 R.

Why do O,F and N,when bonded to H,form such strong intermolecular attractions to neighboring molecules? Make sure to be specific.

Identify the characteristics of a liquid.

Which has the highest boiling point?

Which type of bonding does Sr form upon solidification?

Place the following compounds in order of increasing strength of intermolecular forces. CH₄ CH₃CH₂CH₃ CH₃CH₃

Identify triple point.

The heat of vaporization of water at 100°C is 40.66 kJ/mol.Calculate the quantity of heat that is absorbed/released when 9.00 g of steam condenses to liquid water at 100°C.

Choose the substance with the highest surface tension.

Matter, Measurement, and Problem Solving

Atoms and Elements

Molecules, Compounds and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Exam 11: Liquids, Solids, and Intermolecular Forces

Gold crystallizes in a face-centered cubic structure.What is the edge length of the unit cell if the atomic radius of gold is 144 pm?

Choose the pair of substances that are most likely to form a homogeneous solution.

Place the following substances in order of increasing boiling point. CH3CH2OH Ar CH3OCH3

How much energy is required to vaporize 158 g of butane (C4H10)at its boiling point,if its ΔHvap is 24.3 kJ/mol?

Why is water an extraordinary substance?

Calculate the vapor pressure of methanol at 40.0°C from the data given below: Enthalpy of vaporization (∆Hvap = 35.2 kJ/mol;boiling point = 64.6°C; Vapor pressure at 64.6°C = 760 torr)

Cesium has a radius of 272 pm and crystallizes in a body-centered cubic structure.What is the edge length of the unit cell?

Choose the substance with the lowest vapor pressure at a given temperature.

Match the following. -CH3OH

What is the strongest type of intermolecular force present in NH2CH3?

Determine the radius of an Al atom (in pm)if the density of aluminum is 2.71 g/cm3.Aluminum crystallizes in a face centered cubic structure with an edge length of 2 R.

Why do O,F and N,when bonded to H,form such strong intermolecular attractions to neighboring molecules? Make sure to be specific.

Identify the characteristics of a liquid.

Which has the highest boiling point?

Which type of bonding does Sr form upon solidification?

Place the following compounds in order of increasing strength of intermolecular forces. CH4 CH3CH2CH3 CH3CH3

Identify triple point.

The heat of vaporization of water at 100°C is 40.66 kJ/mol.Calculate the quantity of heat that is absorbed/released when 9.00 g of steam condenses to liquid water at 100°C.

Choose the substance with the highest surface tension.

Matter, Measurement, and Problem Solving

Atoms and Elements

Molecules, Compounds and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Place the following substances in order of increasing boiling point. CH₃CH₂OH Ar CH₃OCH₃

How much energy is required to vaporize 158 g of butane (C₄H₁₀)at its boiling point,if its ΔH_vap is 24.3 kJ/mol?

Calculate the vapor pressure of methanol at 40.0°C from the data given below: Enthalpy of vaporization (∆H_vap= 35.2 kJ/mol;boiling point = 64.6°C; Vapor pressure at 64.6°C = 760 torr)

Match the following. -CH₃OH

What is the strongest type of intermolecular force present in NH₂CH₃?

Determine the radius of an Al atom (in pm)if the density of aluminum is 2.71 g/cm³.Aluminum crystallizes in a face centered cubic structure with an edge length of 2 R.

Place the following compounds in order of increasing strength of intermolecular forces. CH₄ CH₃CH₂CH₃ CH₃CH₃