Question 1

How many grams of C4H10O can be melted by 2.00 X 103 J? 
Given   =7.27 kJ/mol

Accepted Answer

A) 14.5 
B) 3.64 
C) 20.4 
D) 74.1 
E) none of the above 
A) 14.5 
B) 3.64 
C) 20.4 
D) 74.1 
E) none of the above

Question 2

A situation where two opposite processes are occurring at equal rates,and no net change is taking place,is called:

Accepted Answer

A) vaporization. 
B) condensation. 
C) evaporation. 
D) dynamic equilibrium. 
E) none of the above 
A) vaporization. 
B) condensation. 
C) evaporation. 
D) dynamic equilibrium. 
E) none of the above

Question 3

For hydrogen bonding to occur,a molecule must have a hydrogen atom bonded directly to a fluorine,oxygen,or nitrogen atom.

Accepted Answer

A) True 
 B)False

Question 4

Liquids can be easily compressed.

Accepted Answer

A) True 
 B)False

Question 5

Evaporation is:

Accepted Answer

A) increased by increasing temperature. 
B) an endothermic process. 
C) the opposite process to condensation. 
D) a cooling process for humans when they sweat. 
E) all of the above 
A) increased by increasing temperature. 
B) an endothermic process. 
C) the opposite process to condensation. 
D) a cooling process for humans when they sweat. 
E) all of the above

Question 6

How much energy does it take to melt a 16.87 g ice cube? 
  = 6.02 kJ/mol

Accepted Answer

A) 102 kJ 
B) 108 kJ 
C) 936 J 
D) 5.64 kJ 
E) none of the above 
A) 102 kJ 
B) 108 kJ 
C) 936 J 
D) 5.64 kJ 
E) none of the above

Question 7

You can increase the vapor pressure of a liquid by:

Accepted Answer

A) increasing temperature. 
B) increasing the viscosity. 
C) establishing dynamic equilibrium. 
D) using a nonvolatile compound. 
E) all of the above 
A) increasing temperature. 
B) increasing the viscosity. 
C) establishing dynamic equilibrium. 
D) using a nonvolatile compound. 
E) all of the above

Question 8

Copper is which type of solid?

Accepted Answer

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

Question 9

Rank the compounds NH3,CH4,and PH3 in order of increasing boiling point.

Accepted Answer

A) NH3 43 
B) CH43 3 
C) NH3 34 
D) CH4 3 3 
E) PH33 4 
A) NH3 43 
B) CH43 3 
C) NH3 34 
D) CH4 3 3 
E) PH33 4

Question 10

The measure of the resistance to the flow of a liquid is called:

Accepted Answer

A) vapor pressure. 
B) sublimation. 
C) viscosity. 
D) condensation. 
E) none of the above 
A) vapor pressure. 
B) sublimation. 
C) viscosity. 
D) condensation. 
E) none of the above

Question 11

Water has unusual physical properties which enable life to exist on earth.

Accepted Answer

A) True 
 B)False

Question 12

A 250 gram sample of water at the boiling point had 45.0 kJ of heat added.How many grams of water were vaporized? 
Heat of vaporization for water is

Accepted Answer

A) 1.11 
B) 20.0 
C) 0.902 
D) 16.2 
E) none of the above 
A) 1.11 
B) 20.0 
C) 0.902 
D) 16.2 
E) none of the above

Question 13

How many kJ of heat are needed to completely vaporize 3.30 moles of H2O? 
The heat of vaporization for water at the boiling point is

Accepted Answer

A) 12.3 
B) 134 
C) 67.0 
D) 2.26 
E) none of the above 
A) 12.3 
B) 134 
C) 67.0 
D) 2.26 
E) none of the above

Question 14

Which state of matter has a low density and is easily compressed?

Accepted Answer

A) solids 
B) liquids 
C) gases 
D) both solids and liquids 
E) none of the above 
A) solids 
B) liquids 
C) gases 
D) both solids and liquids 
E) none of the above

Question 15

Intermolecular forces determine if a substance is a solid,liquid or gas at room temperature.

Accepted Answer

A) True 
 B)False

Question 16

Which statement is TRUE in describing what occurs when a solid melts to a liquid?

Accepted Answer

A) The process is endothermic and the heat of fusion is positive. 
B) The process is endothermic and the heat of fusion is negative. 
C) The process is exothermic and the heat of fusion is positive. 
D) The process is exothermic and the heat of fusion is negative. 
E) not enough information 
A) The process is endothermic and the heat of fusion is positive. 
B) The process is endothermic and the heat of fusion is negative. 
C) The process is exothermic and the heat of fusion is positive. 
D) The process is exothermic and the heat of fusion is negative. 
E) not enough information

Question 17

When one mole of water vapor at 100°C condenses,it will release an amount of energy equivalent to its heat of vaporization (40.7 kJ).

Accepted Answer

A) True 
 B)False

Question 18

The rate of evaporation will increase if you pour a liquid out onto a large surface.

Accepted Answer

A) True 
 B)False

Question 19

Increasing the intermolecular forces of a liquid will do which of the following?

Accepted Answer

A) increase the viscosity 
B) decrease the evaporation rate 
C) increase the surface tension 
D) decrease the vapor pressure 
E) all of the above 
A) increase the viscosity 
B) decrease the evaporation rate 
C) increase the surface tension 
D) decrease the vapor pressure 
E) all of the above

Question 20

How many kilojoules of heat are needed to completely vaporize 428 grams of C4H10O at its boiling point? 
Given   = 26.5kJ/mol

Accepted Answer

A) 74.12 
B) 9.49 
C) 15.3 
D) 16.3 
E) none of the above 
A) 74.12 
B) 9.49 
C) 15.3 
D) 16.3 
E) none of the above

How many grams of C₄H₁₀O can be melted by 2.00 X 10³ J? Given =7.27 kJ/mol

A situation where two opposite processes are occurring at equal rates,and no net change is taking place,is called:

For hydrogen bonding to occur,a molecule must have a hydrogen atom bonded directly to a fluorine,oxygen,or nitrogen atom.

Liquids can be easily compressed.

Evaporation is:

How much energy does it take to melt a 16.87 g ice cube? = 6.02 kJ/mol

You can increase the vapor pressure of a liquid by:

Copper is which type of solid?

Rank the compounds NH₃,CH₄,and PH₃ in order of increasing boiling point.

The measure of the resistance to the flow of a liquid is called:

Water has unusual physical properties which enable life to exist on earth.

A 250 gram sample of water at the boiling point had 45.0 kJ of heat added.How many grams of water were vaporized? Heat of vaporization for water is

How many kJ of heat are needed to completely vaporize 3.30 moles of H₂O? The heat of vaporization for water at the boiling point is

Which state of matter has a low density and is easily compressed?

Intermolecular forces determine if a substance is a solid,liquid or gas at room temperature.

Which statement is TRUE in describing what occurs when a solid melts to a liquid?

When one mole of water vapor at 100°C condenses,it will release an amount of energy equivalent to its heat of vaporization (40.7 kJ).

The rate of evaporation will increase if you pour a liquid out onto a large surface.

Increasing the intermolecular forces of a liquid will do which of the following?

How many kilojoules of heat are needed to completely vaporize 428 grams of C₄H₁₀O at its boiling point? Given = 26.5kJ/mol

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Exam 12: Liquids, solids, and Intermolecular Forces

How many grams of C4H10O can be melted by 2.00 X 103 J? Given =7.27 kJ/mol

A situation where two opposite processes are occurring at equal rates,and no net change is taking place,is called:

For hydrogen bonding to occur,a molecule must have a hydrogen atom bonded directly to a fluorine,oxygen,or nitrogen atom.

Liquids can be easily compressed.

Evaporation is:

How much energy does it take to melt a 16.87 g ice cube? = 6.02 kJ/mol

You can increase the vapor pressure of a liquid by:

Copper is which type of solid?

Rank the compounds NH3,CH4,and PH3 in order of increasing boiling point.

The measure of the resistance to the flow of a liquid is called:

Water has unusual physical properties which enable life to exist on earth.

A 250 gram sample of water at the boiling point had 45.0 kJ of heat added.How many grams of water were vaporized? Heat of vaporization for water is

How many kJ of heat are needed to completely vaporize 3.30 moles of H2O? The heat of vaporization for water at the boiling point is

Which state of matter has a low density and is easily compressed?

Intermolecular forces determine if a substance is a solid,liquid or gas at room temperature.

Which statement is TRUE in describing what occurs when a solid melts to a liquid?

When one mole of water vapor at 100°C condenses,it will release an amount of energy equivalent to its heat of vaporization (40.7 kJ).

The rate of evaporation will increase if you pour a liquid out onto a large surface.

Increasing the intermolecular forces of a liquid will do which of the following?

How many kilojoules of heat are needed to completely vaporize 428 grams of C4H10O at its boiling point? Given = 26.5kJ/mol

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

How many grams of C₄H₁₀O can be melted by 2.00 X 10³ J? Given =7.27 kJ/mol

Rank the compounds NH₃,CH₄,and PH₃ in order of increasing boiling point.

How many kJ of heat are needed to completely vaporize 3.30 moles of H₂O? The heat of vaporization for water at the boiling point is

How many kilojoules of heat are needed to completely vaporize 428 grams of C₄H₁₀O at its boiling point? Given = 26.5kJ/mol