Question 1

Which of the following is the strongest intermolecular interaction?

Accepted Answer

A)  covalent bonding 
B)  dipole-dipole interactions 
C)  London dispersion forces 
D)  hydrogen bonding 
A)  covalent bonding 
B)  dipole-dipole interactions 
C)  London dispersion forces 
D)  hydrogen bonding

Question 2

Which of the following exerts the greatest pressure?

Accepted Answer

A)  a 20 gram object on a surface of 0.50 cm2 
B)  a 40 gram object on a surface of 2.0 cm2 
C)  a 60 gram object on a surface of 3.0 cm2 
D)  None, they all exert the same pressure. 
A)  a 20 gram object on a surface of 0.50 cm2 
B)  a 40 gram object on a surface of 2.0 cm2 
C)  a 60 gram object on a surface of 3.0 cm2 
D)  None, they all exert the same pressure.

Question 3

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

Accepted Answer

A)  diamond 
B)  dry ice 
C)  sodium 
D)  sodium chloride 
A)  diamond 
B)  dry ice 
C)  sodium 
D)  sodium chloride

Question 4

Consider the following heating curve for the generic substance Z.  
-Based on this heating curve, what physical state of Z is present at about 60 °C?

Accepted Answer

A)  solid 
B)  liquid 
C)  gas 
D)  solid and liquid 
E)  liquid and gas 
A)  solid 
B)  liquid 
C)  gas 
D)  solid and liquid 
E)  liquid and gas

Question 5

Dry air is 78.08% nitrogen, 20.95% oxygen and 0.93% argon with the 0.04% being other gases. If the atmospheric pressure is 760.0 torr, what is the partial pressure of oxygen in dry air?

Accepted Answer

A)  20.95 torr 
B)  159.2 torr 
C)  600.8 torr 
D)  760.0 torr 
A)  20.95 torr 
B)  159.2 torr 
C)  600.8 torr 
D)  760.0 torr

Question 6

Which of the following is a mathematical statement of the combined gas law?

Accepted Answer

A)  P1V2T1 = P2V1T2 
B)  P1V2T2 = P2V1T1 
C)  P1V1T2 = P2V2T1 
D)  P1V1T1 = P2V2T2 
A)  P1V2T1 = P2V1T2 
B)  P1V2T2 = P2V1T1 
C)  P1V1T2 = P2V2T1 
D)  P1V1T1 = P2V2T2

Question 7

Which of the following is a mathematical statement of the ideal gas law?

Accepted Answer

A)  PV = n/RT 
B)  PV = nRT 
C)  V = nP/RT 
D)  PV = RT/n 
A)  PV = n/RT 
B)  PV = nRT 
C)  V = nP/RT 
D)  PV = RT/n

Question 8

Which law relates the volume and number of molecules of a gas under conditions of constant temperature and pressure?

Accepted Answer

A)  Avogadro's law 
B)  Boyle's law 
C)  Charles's law 
D)  Dalton's law 
A)  Avogadro's law 
B)  Boyle's law 
C)  Charles's law 
D)  Dalton's law

Question 9

At constant pressure the temperature of a 4.0 L sample of gas is decreased from 50. °C to 25 °C. What is the new volume of the gas sample?

Accepted Answer

A)  2.00 L 
B)  3.69 L 
C)  4.34 L 
D)  8.00 L 
A)  2.00 L 
B)  3.69 L 
C)  4.34 L 
D)  8.00 L

Question 10

As the temperature of a liquid is increased what happens to the vapor pressure?

Accepted Answer

A)  It decreases. 
B)  It increases. 
C)  It remains the same. 
D)  The change depends on the identity of the liquid. 
A)  It decreases. 
B)  It increases. 
C)  It remains the same. 
D)  The change depends on the identity of the liquid.

Question 11

Which of the following best describes the relationship of molecules in a liquid with those in a gas at the same temperature?

Accepted Answer

A)  Molecules in the liquid are much closer together than those in the gas. 
B)  Molecules in the liquid have the same kinetic energy as those in the gas. 
C)  both a and b 
D)  neither a nor b 
A)  Molecules in the liquid are much closer together than those in the gas. 
B)  Molecules in the liquid have the same kinetic energy as those in the gas. 
C)  both a and b 
D)  neither a nor b

Question 12

At constant pressure the temperature of a 4.00 L sample of gas is decreased from 400. K to 300. K. What is the new volume of the gas sample?

Accepted Answer

A)  0.188 L 
B)  0.333 L 
C)  3.00 L 
D)  5.33 L 
A)  0.188 L 
B)  0.333 L 
C)  3.00 L 
D)  5.33 L

Exam 5: Gases, Liquids, and Solids

Which of the following is the strongest intermolecular interaction?

Which of the following exerts the greatest pressure?

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

Consider the following heating curve for the generic substance Z. -Based on this heating curve, what physical state of Z is present at about 60 °C?

Dry air is 78.08% nitrogen, 20.95% oxygen and 0.93% argon with the 0.04% being other gases. If the atmospheric pressure is 760.0 torr, what is the partial pressure of oxygen in dry air?

Which of the following is a mathematical statement of the combined gas law?

Which of the following is a mathematical statement of the ideal gas law?

Which law relates the volume and number of molecules of a gas under conditions of constant temperature and pressure?

At constant pressure the temperature of a 4.0 L sample of gas is decreased from 50. °C to 25 °C. What is the new volume of the gas sample?

As the temperature of a liquid is increased what happens to the vapor pressure?

Which of the following best describes the relationship of molecules in a liquid with those in a gas at the same temperature?

At constant pressure the temperature of a 4.00 L sample of gas is decreased from 400. K to 300. K. What is the new volume of the gas sample?

Matter, Energy, and Measurement

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