Question 1

Define viscosity.

Accepted Answer

Viscosity

Question 2

Define freezing.

Accepted Answer

A)  the phase transition from solid to gas 
B)  the phase transition from gas to solid 
C)  the phase transition from gas to liquid 
D)  the phase transition from liquid to gas 
E)  the phase transition from liquid to solid 
A)  the phase transition from solid to gas 
B)  the phase transition from gas to solid 
C)  the phase transition from gas to liquid 
D)  the phase transition from liquid to gas 
E)  the phase transition from liquid to solid

Question 3

How much energy must be removed from a 125 g sample of benzene (molar mass = 78.11 g/mol)at 425.0 K to liquify the sample and lower the temperature to 335.0 K? The following physical data may be useful.
ΔHvap = 33.9 kJ/mol
ΔHfus = 9.8 kJ/mol
Cliq = 1.73 J/g°C
Cgas = 1.06 J/g°C
Csol = 1.51 J/g°C
Tmelting = 279.0 K
Tboiling = 353.0 K

Accepted Answer

A)  38.9 kJ 
B)  95.4 kJ 
C)  67.7 kJ 
D)  54.3 kJ 
E)  74.4 kJ 
A)  38.9 kJ 
B)  95.4 kJ 
C)  67.7 kJ 
D)  54.3 kJ 
E)  74.4 kJ

Question 4

Place the following substances in order of increasing boiling point. CH3CH2CH2CH2OH 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 heat 87.1 g acetone (molar mass = 58.08 g/mol)from a solid at -154.0°C to a liquid at -42.0°C? The following physical data may be useful. ΔHfus = 7.27 kJ/mol
Cliq = 2.16 J/g°C
Cgas = 1.29 J/g°C
Csol = 1.65 J/g°C
Tmelting = -95.0°C

Accepted Answer

A)  8.48 kJ 
B)  18.5 kJ 
C)  32.2 kJ 
D)  29.4 kJ 
E)  9.97 kJ 
A)  8.48 kJ 
B)  18.5 kJ 
C)  32.2 kJ 
D)  29.4 kJ 
E)  9.97 kJ

Question 6

How much energy is required to vaporize 178 g of butane (C4H10)at its boiling point,if its ΔHvap is 24.3 kJ/mol?

Accepted Answer

A)  13.4 kJ 
B)  74.6 kJ 
C)  41.9 kJ 
D)  2.31 kJ 
E)  43.3 kJ 
A)  13.4 kJ 
B)  74.6 kJ 
C)  41.9 kJ 
D)  2.31 kJ 
E)  43.3 kJ

Question 7

Calculate the total quantity of heat required to convert 25.0 g of liquid CCl4(l)from 30.0°C to gaseous CCl4 at 76.8°C (the normal boiling point for CCl4).The specific heat of CCl4(l)is 0.857 J/(g ∙ °C),its heat of fusion is 3.27 kJ/mol,and its heat of vaporization is 29.82 kJ/mol.

Accepted Answer

A)  1.00 kJ 
B)  1.53 kJ 
C)  5.85 kJ 
D)  6.38 kJ 
A)  1.00 kJ 
B)  1.53 kJ 
C)  5.85 kJ 
D)  6.38 kJ

Question 8

Choose the molecule or compound that exhibits dipole-dipole forces as its strongest intermolecular force.

Accepted Answer

A)  N2 
B)  SO2 
C)  H2O 
D)  CBr4 
E)  BCl3 
A)  N2 
B)  SO2 
C)  H2O 
D)  CBr4 
E)  BCl3

Define viscosity.

Define freezing.

Place the following substances in order of increasing boiling point. CH₃CH₂CH₂CH₂OH Ar CH₃OCH₃

How much energy is required to heat 87.1 g acetone (molar mass = 58.08 g/mol)from a solid at -154.0°C to a liquid at -42.0°C? The following physical data may be useful. ΔH_fus = 7.27 kJ/mol C_liq = 2.16 J/g°C C_gas= 1.29 J/g°C C_sol = 1.65 J/g°C T_melting= -95.0°C

How much energy is required to vaporize 178 g of butane (C₄H₁₀)at its boiling point,if its ΔH_vap is 24.3 kJ/mol?

Calculate the total quantity of heat required to convert 25.0 g of liquid CCl₄(l)from 30.0°C to gaseous CCl₄ at 76.8°C (the normal boiling point for CCl₄).The specific heat of CCl₄(l)is 0.857 J/(g ∙ °C),its heat of fusion is 3.27 kJ/mol,and its heat of vaporization is 29.82 kJ/mol.

Choose the molecule or compound that exhibits dipole-dipole forces as its strongest intermolecular force.

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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,

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

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Organic Chemistry

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Chemistry of the Nonmetals

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Exam 11: Liquids,solids,and Intermolecular Forces

Define viscosity.

Define freezing.

Place the following substances in order of increasing boiling point. CH3CH2CH2CH2OH Ar CH3OCH3

How much energy is required to heat 87.1 g acetone (molar mass = 58.08 g/mol)from a solid at -154.0°C to a liquid at -42.0°C? The following physical data may be useful. ΔHfus = 7.27 kJ/mol Cliq = 2.16 J/g°C Cgas = 1.29 J/g°C Csol = 1.65 J/g°C Tmelting = -95.0°C

How much energy is required to vaporize 178 g of butane (C4H10)at its boiling point,if its ΔHvap is 24.3 kJ/mol?

Calculate the total quantity of heat required to convert 25.0 g of liquid CCl4(l)from 30.0°C to gaseous CCl4 at 76.8°C (the normal boiling point for CCl4).The specific heat of CCl4(l)is 0.857 J/(g ∙ °C),its heat of fusion is 3.27 kJ/mol,and its heat of vaporization is 29.82 kJ/mol.

Choose the molecule or compound that exhibits dipole-dipole forces as its strongest intermolecular force.

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,

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Place the following substances in order of increasing boiling point. CH₃CH₂CH₂CH₂OH Ar CH₃OCH₃

How much energy is required to heat 87.1 g acetone (molar mass = 58.08 g/mol)from a solid at -154.0°C to a liquid at -42.0°C? The following physical data may be useful. ΔH_fus = 7.27 kJ/mol C_liq = 2.16 J/g°C C_gas= 1.29 J/g°C C_sol = 1.65 J/g°C T_melting= -95.0°C

How much energy is required to vaporize 178 g of butane (C₄H₁₀)at its boiling point,if its ΔH_vap is 24.3 kJ/mol?

Calculate the total quantity of heat required to convert 25.0 g of liquid CCl₄(l)from 30.0°C to gaseous CCl₄ at 76.8°C (the normal boiling point for CCl₄).The specific heat of CCl₄(l)is 0.857 J/(g ∙ °C),its heat of fusion is 3.27 kJ/mol,and its heat of vaporization is 29.82 kJ/mol.