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1
This printout should have 33 questions.
Multiplechoice questions may continue on
the next column or page – fnd all choices
beFore answering.
The due time is Central
time.
001
(part 1 oF 1) 10 points
Divers know that the pressure exerted by
the water increases about 100kPa with every
10.2m oF depth. This means that at 10.2m
below the surFace, the pressure is 201kPa;
at 20.4m below the surFace, the pressure is
301kPa; and so Forth.
IF the volume oF a
balloon is 2
.
9 L at STP and the temperature
oF the water remains the same, what is the
volume 57
.
19 m below the water’s surFace?
Answer in units oF L.
002
(part 1 oF 1) 10 points
A gas is enclosed in a 10.0 L tank at 1200
mm Hg pressure.
Which oF the Following is
a reasonable value For the pressure when the
gas is pumped into a 5.00 L vessel?
1.
600 mm Hg
2.
2400 mm Hg
3.
24 mm Hg
4.
0.042 mm Hg
003
(part 1 oF 1) 10 points
At standard temperature, a gas has a volume
oF 290 mL. The temperature is then increased
to 138
◦
C, and the pressure is held constant.
What is the new volume? Answer in units oF
mL.
004
(part 1 oF 1) 10 points
A sample oF gas in a closed container at a
temperature oF 67
◦
C and a pressure oF 6 atm
is heated to 314
◦
C. What pressure does the
gas exert at the higher temperature? Answer
in units oF atm.
005
(part 1 oF 1) 10 points
A gas at 1
.
62
×
10
6
Pa and 26
◦
C occu
pies a volume oF 399 cm
3
.
At what tem
perature would the gas occupy 542 cm
3
at
3
.
38
×
10
6
Pa? Answer in units oF
◦
C.
006
(part 1 oF 1) 10 points
A sample oF ideal gas occupies 250 mL at 25
◦
C
and 740 torr.
What is its volume at STP?
1.
223 mL
2.
280 mL
3.
250 mL
4.
266 mL
5.
235 mL
007
(part 1 oF 1) 10 points
What is the percent yield iF 4.51 moles oF CH
4
produces 16 L oF CO
2
at STP?
CH
4
+ 2O
2
→
CO
2
+ 2H
2
O
1.
36.4%
2.
6.31%
3.
15.8%
4.
78.1%
5.
1.26%
008
(part 1 oF 1) 10 points
IF I have 44.8 liters oF nitrogen gas at standard
temperature and pressure, how much will it
weigh?
1.
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 Spring '08
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