EXAM WITH ANSWERS.
What is the equivalent of 960 mm Hg in units of atm?
A. 1.27 atm
B. 0.785 atm
C. 968 atm
D. 1.30 atm
E. none of the above -correct answer -A
Boyle's Law is expressed as:
A. V is proportional to 1/P
B. P is proportional to V
C. V is proportional to 1/T
D. V is proportional to T
E. none of the above -correct answer -A
If each of the following gas samples have the same temperature and pressure,
,which sample has the greatest volume?
A. 1 gram of 02
B. 1 gram of Ar
C. 1 gram of H2
D. all have the same volume
E. not enough information -correct answer -C
Which of the following is NOT part of the Kinetic Molecular Theory?
A. Gas particles do not repel each other.
B. There is a large distance between gas particles as compared to their
relative size.
C. The size of the actual gas particles is small compared to the volume of
the whole gas.
D. The average energy of the particles is dependent on the molecular
mass of the particle.
E. All of the above are true. -correct answer -D
If the volume of a gas container at 32.0 C changes from 1.55 L to 755 mL, what
will the final temperature be?
,A. 149 C
B. 353 C
C. 273 C
D. -124 C
E. none of the above -correct answer -D
What is the final pressure (expressed in atm) of a 3.05 L system initially at 724
mm Hg and 298 K, that is compressed to a final volume of 2.51 L at 273 K?
A. 1.06
B. 1.60
C. 806
D. 860
E. none of the above -correct answer -A
Which of the following statements about pressure is FALSE?
A. Pressure is caused by gas molecules colliding with surfaces.
B. The atmosphere has a pressure as the components of air collide with
surfaces.
C. After creating a pressure difference, the atmosphere pressure can push
, liquid up a straw.
D. A deep well dug in the ground must have the pump located at the bottom
of the well in order to have water come to the surface.
E. All of the above are true. -correct answer -E
A balloon originally had a volume of 0.439 L at 44C and a pressure of 729
torr. To what temperature must the balloon be cooled to reduced its volume to
378 mL if the pressure remained constant?
A. 0 C
B. 38 C
C. 95 C
D. 272 C
E. none of the above -correct answer -A
Using pure oxygen is scuba diving tanks is a good method of preventing the
nitrogen bends.
True
False -correct answer -False
The Main Component Of The Air We Breath Is Oxygen Gas.