CHM 1025C: Spring Term 2008
On-Line PreFinal Module 6
Corwin Chapter 11

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Final Exam: Module 6

Final Exam Quiz Masters:

Mary Tassin (MTassin002@lsua.edu) [Text Input]

John Taylor (johtaylo@fscj.edu) [Consultant]

Multiple Choice [One Answer Only]

Question 1

What is the term for the pressure exerted by gas molecules in the air?

a) partial pressure
b) vapor pressure
c) gas pressure
d) atmospheric pressure
e) none of the above

Question 2

What is the term for pressure exerted by an individual gas in a mixture of two or more gases?

a) vapor pressure
b) atmospheric pressure
c) partial pressure
d) gas pressure
e) none of the above

Question 3

Which of the following expresses standard atmospheric pressure?

a) 14.7 psi
b) 760 mmHg
c) 76.0 cm Hg
d) 29.9 in. Hg
e) all of the above

Question 4

Which of the following changes decreases the pressure of a gas?

a) decreasing temperature
b) decreasing the number of gas molecules
c) increasing the volume
d) all of the above
e) none of the above

Question 5

A sample of neon gas at 1.20 atm compresses from 0.250 L to 0.125 L. If the temperature remains constant, what is the final pressure?

a) 1.00 atm
b) 2.40 atm
c) 0.600 atm
d) 1.20 atm
e) none of the above

Question 6

A 5.00 L volume of methane gas is cooled from 60.0 ^oC to 30.0 ^oC. If the pressure remains constant, what is the final volume?

a) 10.0 L
b) 2.50 L
c) 4.55 L
d) 5.50 L
e) 5.00 L

Question 7

An atmospheric sample is composed of nitrogen, oxygen and traces of other gases. If the partial pressure of nitrogen is 587 torr, oxygen is 158 torr and argon is 7 torr, what is the observed barometric pressure?

a) 752 torr
b) 100 torr
c) 1512 torr
d) 8 torr
e) 422 torr

Question 8

Which of the following represents the graph of the kinetic energy versus the absolute temperature for ideal gas?

a)
b)
c)
d)

Question 9

At the same temperature, which of the following gases contains molecules with the slowest average velocity?

a) carbon dioxide, CO₂
b) nitrogen monoxide, NO
c) nitrogen dioxide NO₂
d) carbon monoxide, CO
e) the average velocity is the same

Question 10

If 1.06 mol of helium exert a pressure of 0.750 atm at 210.0 ^oC, what is the volume in liters?

a) 24.4 L
b) 28.1 L
c) 0.00155 L
d) 4160 L
e) 56.0 L

Question 11

What is the temperature at which an ideal gas occupies zero pressure?

a) O K
b) absolute zero
c) -273 ^oC
d) all of the above
e) none of the above

Question 12

Which of the following is true according to the kinetic theory of gases?

a) molecules are attracted to one another
b) molecules lose energy after colliding
c) molecules remain in fixed positions
d) all of the above
e) none of the above

Question 13

What volume of hydrogen gas reacts with 12.0 mL of nitrogen gas? (Assume temperature and pressure remain constant.)
__N₂(g) + __H₂(g) -> __ NH₃(g)

a) 4.00 mL
b) 36.0 mL
c) 24.0 mL
d) 6.00 mL
e) none of the above

Question 14

What is the volume of carbon dioxide at STP from the decomposition of 2.50 g of potassium hydrogen carbonate (100.12 g/mol)?
__KHCO₃(s) -> __K₂CO₃(s) + H₂O(l) + __CO₂(g)

a) 22.3 L
b) 1.12 L
c) 0.280 L
d) 0.559 L
e) 5.60 L

Question 15

Which of the following represents 1 mol of diborane gas, B₂H₆?

a) 27.68 g diborane gas
b) 6.02 x 10²³diborane gas molecules
c) 2.24 L diborane gas at STP
d) all of the above
e) none of the above

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CHM 1025C: Spring Term 2008 On-Line PreFinal Module 6Corwin Chapter 11