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Gas Law Review3
Test Description: Gas Law review
Instructions: Answer all questions to get your test result.
1) 14. What is the standard molar volume of a gas at STP?
A
22.4
B
11.5
C
62.1
D
88.5
2) 15. A container holds 500 mL of CO2 at 20 degrees Celsius and 742 torr. What will be the volume of CO2 if the pressure is increased to 795 torr?
A
588.88
B
466.66
C
854.11
D
846.18
3) 16. A gas tank holds 2785 L of propane at 830 mm Hg. What is the volume of propane at STP?
A
4684.6
B
8497.2
C
3041.5
D
6548.2
4) 17. A container holds 50 mL of nitrogen at 25 degrees Celsius and a pressure of 736 mm Hg. What will be its volume if the temperature increases by 35 degrees Celsius?
A
42.97
B
51.68
C
62.81
D
87.87
5) 18. A sample of oxygen occupies a volume of 160 L at 91 degrees Celsius. What will be the volume of oxygen when the temperature drops to 0 degrees Celsius?
A
240
B
560
C
420
D
120
6) 19. A mylar balloon is filled with helium gas to a pressure of 107 kPa when the temperature is 22 degrees Celsius. If the temperature changes to 45 degrees Celsius, what will be the pressure of the helium in the balloon?
A
587.12
B
115.34
C
225.64
D
284.64
7) 20. A cylinder of compressed gas has a pressure of 4.882 atm on one day. The next day the same cylinder has a pressure of 4.690 atm, and it’s temperature is 8 degrees Celsius. What was the temperature on the previous day in degrees Celsius?
A
648.2
B
292.5
C
946.7
D
815.3
8) 21. A gas take up a volume of 17 liters, has a pressure of 2.3 atm, and a temperature of 299 K. If I raise the temperature to 350 K and lower the pressure to 1.5 atm, what is the new volume of the gas?
A
21.2
B
37.8
C
30.5
D
41.5
9) 22. A gas has a volume of 28 liters, a temperature of 45 degrees Celsius, and an unknown pressure has its volume increased to 34 liters and its temperature decreased to 35 degrees Celsius. If I measure the pressure after the change to be 2.0 atm, wha
A
7.2
B
3.6
C
2.5
D
5.1
10) 23. Three flasks are connected to one another. The first flask contains helium at a pressure of 1.54 atm, the second flask contains nitrogen at .74 atm, and the third flask contains oxygen at 1.06 atm. What is the total pressure of this system?
A
3.34
B
1.65
C
2.23
D
9.65
11) 24. If I added hydrogen to the system above and the total pressure increased to 4 atm, what was the partial pressure of hydrogen?
A
0.66
B
1.11
C
1.47
D
0.49
12) 25. How many moles of gas does it take to occupy 120 liters at a pressure of 2.3 atm and a temperature of 340 K?
A
14.89
B
20.15
C
10.15
D
36.22
13) 26. If I have a 50 liter container that holds 45 moles of gas at a temperature of 200 degrees Celsius, what is the pressure inside the container?
A
30.7
B
43.9
C
34.1
D
40.1
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