Question 1

The vapor pressure of a liquid

Accepted Answer

A) decreases with increasing temperature. 
B) is independent of temperature. 
C) is equal to one atmosphere at the normal boiling point. 
D) cannot be measured.

Question 2

What are the strongest intermolecular forces between pentane (C5H12)molecules?

Accepted Answer

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

Question 3

When the volume of a gas is plotted against the Celsius temperature while holding pressure and the number of moles constant,the x-intercept will occur at what temperature?

Accepted Answer

A) 0°C 
B) -273°C 
C) the boiling point of the gas 
D) the melting point of the gas 
E) 100°C

Question 4

Calculate the volume of 5.00 mol of helium at 120.°C and 1520 mm Hg.

Accepted Answer

A) 323 liters 
B) 80.6 liters 
C) 0.106 liters 
D) 0.0324 liters 
E) none of the above

Question 5

For the following reaction,if 11.2 L of nitrogen are reacted to form NH3 at STP,how many liters of hydrogen will be required to completely consume all of the nitrogen?
N2 + 3H2 → 2NH3

Accepted Answer

A) 16.8 L 
B) 11.2 L 
C) 7.4 L 
D) 33.6 L 
E) 6.1 L

Question 6

How many moles of gas are present in a 10.0 liter sample at STP?

Accepted Answer

A) 224 moles 
B) 22.4 moles 
C) 10.0 moles 
D) 2.24 moles 
E) 0.446 moles

Question 7

The amount of energy involved in melting a substance without changing its temperature is called the

Accepted Answer

A) heat of vaporization. 
B) calorie. 
C) joule. 
D) heat of fusion. 
E) heat of combustion.

Question 8

Most gases show variations from ideality at ________ pressure and ________ temperature.

Accepted Answer

A) high;low 
B) low;high 
C) high;high 
D) low;low 
E) moderate;moderate

Question 9

In comparing liquids and gases,liquids have ________ compressibility and ________ density.

Accepted Answer

A) smaller;smaller 
B) smaller;greater 
C) greater;smaller 
D) greater;greater 
E) none of the above

Question 10

How many grams of O2 are contained in a 25.0 L sample at 5.20 atm and 28.0°C?

Accepted Answer

A) 1810 g 
B) 168 g 
C) 84.2 g 
D) 5.26 g 
E) 0.164 g

Question 11

Match the following.
-surface tension

Accepted Answer

A) having a definite orderly arrangement of particles 
B) the measure of a liquid's resistance to spreading out. 
C) the amount of space occupied by a gas 
D) the temperature at which the vapor pressure of a liquid is equal to the atmospheric pressure 
E) the amount of energy required to convert a liquid into a gas at its boiling point
F)the temperature at which the solid and liquid phase are at equilibrium
G)having no well-ordered shape or form
H)the number and force of collisions between molecules and the walls of the container
I)having atoms covalently bonded together in a large 3-dimensional array
J)the measure of a liquid's resistance to flow.

Question 12

What is the new volume of a balloon originally at 755 torr and 5.00 L is placed in a container in which the pressure is increased to 1.25 atm?

Accepted Answer

A) 6.29 L 
B) 3.97 L 
C) 0.159 L 
D) 302 L 
E) 39.7 L

Question 13

Match the following.
-viscosity

Accepted Answer

A) having a definite orderly arrangement of particles 
B) the measure of a liquid's resistance to spreading out. 
C) the amount of space occupied by a gas 
D) the temperature at which the vapor pressure of a liquid is equal to the atmospheric pressure 
E) the amount of energy required to convert a liquid into a gas at its boiling point
F)the temperature at which the solid and liquid phase are at equilibrium
G)having no well-ordered shape or form
H)the number and force of collisions between molecules and the walls of the container
I)having atoms covalently bonded together in a large 3-dimensional array
J)the measure of a liquid's resistance to flow.

Question 14

Which description best fits a liquid?

Accepted Answer

A) definite shape and volume;strong intermolecular attractions 
B) definite volume;shape of container;moderate intermolecular attractions 
C) definite volume;shape of container;no intermolecular attractions 
D) volume and shape of container;no intermolecular attractions 
E) volume and shape of container;strong intermolecular attractions

Question 15

How many grams of N2 are contained in an 11.2 liter sample at STP?

Accepted Answer

A) 7.00 
B) 11.2 
C) 14.0 
D) 28.0 
E) 6.02 × 1023

Question 16

The total pressure of a mixture of gases is

Accepted Answer

A) obtained by multiplying the individual pressures by the number of moles and averaging. 
B) the sum of the partial pressures of the components. 
C) dependent only upon the pressure of the gas which is present to the greatest extent. 
D) the product of the individual pressures. 
E) none of these

Question 17

How will the volume of a fixed sample of gas change if the pressure is doubled and its Celsius temperature is halved?

Accepted Answer

A) The change cannot be determined without more specific information. 
B) It will double. 
C) It will decrease by a factor of 4. 
D) It will decrease by a factor of 2. 
E) It will remain constant.

Question 18

Which measurement represents the largest value of pressure?

Accepted Answer

A) 0.750 atm 
B) 785 mm Hg 
C) 755 torr 
D) 22.0 psi 
E) 100 kPa

Question 19

Which measurement represents the smallest value of pressure?

Accepted Answer

A) 0.750 atm 
B) 785 mm Hg 
C) 755 torr 
D) 22.0 psi 
E) 100 kPa

Question 20

What is the total pressure of a gaseous mixture that contains three gases with partial pressures of 0.845 atm,120 torr,and 210 mm Hg?

Accepted Answer

A) 1175 torr 
B) 972 torr 
C) 0.411 atm 
D) 331 torr

Exam 8: Gases, liquids, and Solids

The vapor pressure of a liquid

What are the strongest intermolecular forces between pentane (C₅H₁₂) molecules?

When the volume of a gas is plotted against the Celsius temperature while holding pressure and the number of moles constant,the x-intercept will occur at what temperature?

Calculate the volume of 5.00 mol of helium at 120.°C and 1520 mm Hg.

For the following reaction,if 11.2 L of nitrogen are reacted to form NH₃ at STP,how many liters of hydrogen will be required to completely consume all of the nitrogen? N₂ + 3H₂ → 2NH₃

How many moles of gas are present in a 10.0 liter sample at STP?

The amount of energy involved in melting a substance without changing its temperature is called the

Most gases show variations from ideality at pressure and temperature.

In comparing liquids and gases,liquids have compressibility and density.

How many grams of O₂ are contained in a 25.0 L sample at 5.20 atm and 28.0°C?

Match the following. -surface tension

What is the new volume of a balloon originally at 755 torr and 5.00 L is placed in a container in which the pressure is increased to 1.25 atm?

Match the following. -viscosity

Which description best fits a liquid?

How many grams of N₂ are contained in an 11.2 liter sample at STP?

The total pressure of a mixture of gases is

How will the volume of a fixed sample of gas change if the pressure is doubled and its Celsius temperature is halved?

Which measurement represents the largest value of pressure?

Which measurement represents the smallest value of pressure?

What is the total pressure of a gaseous mixture that contains three gases with partial pressures of 0.845 atm,120 torr,and 210 mm Hg?

Exam 8: Gases, liquids, and Solids

The vapor pressure of a liquid

What are the strongest intermolecular forces between pentane (C5H12) molecules?

When the volume of a gas is plotted against the Celsius temperature while holding pressure and the number of moles constant,the x-intercept will occur at what temperature?

Calculate the volume of 5.00 mol of helium at 120.°C and 1520 mm Hg.

For the following reaction,if 11.2 L of nitrogen are reacted to form NH3 at STP,how many liters of hydrogen will be required to completely consume all of the nitrogen? N2 + 3H2 → 2NH3

How many moles of gas are present in a 10.0 liter sample at STP?

The amount of energy involved in melting a substance without changing its temperature is called the

Most gases show variations from ideality at ________ pressure and ________ temperature.

In comparing liquids and gases,liquids have ________ compressibility and ________ density.

How many grams of O2 are contained in a 25.0 L sample at 5.20 atm and 28.0°C?

Match the following. -surface tension

What is the new volume of a balloon originally at 755 torr and 5.00 L is placed in a container in which the pressure is increased to 1.25 atm?

Match the following. -viscosity

Which description best fits a liquid?

How many grams of N2 are contained in an 11.2 liter sample at STP?

The total pressure of a mixture of gases is

How will the volume of a fixed sample of gas change if the pressure is doubled and its Celsius temperature is halved?

Which measurement represents the largest value of pressure?

Which measurement represents the smallest value of pressure?

What is the total pressure of a gaseous mixture that contains three gases with partial pressures of 0.845 atm,120 torr,and 210 mm Hg?

What are the strongest intermolecular forces between pentane (C₅H₁₂) molecules?

For the following reaction,if 11.2 L of nitrogen are reacted to form NH₃ at STP,how many liters of hydrogen will be required to completely consume all of the nitrogen? N₂ + 3H₂ → 2NH₃

Most gases show variations from ideality at pressure and temperature.

In comparing liquids and gases,liquids have compressibility and density.

How many grams of O₂ are contained in a 25.0 L sample at 5.20 atm and 28.0°C?

How many grams of N₂ are contained in an 11.2 liter sample at STP?