If the pressure exerted by a gas at 25 degrees C in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?
.002766 mole
.0069 mol
2.766 mol
9.887 mol
2. Multiple Choice
1.5 minutes
1 pt
Determine the Celsius temperature of 2.49 moles of gas contained in a 1.00-L vessel at a pressure of 143 kPa.
-266 degrees C
-622 degrees C
622 degrees C
266 degrees C
3. Multiple Choice
1.5 minutes
1 pt
Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.
7.18 L
7.81 L
4.63 L
4.36 L
4. Multiple Choice
3 minutes
1 pt
What is the pressure in atmospheres of a 0.108-mol sample of helium gas at a temperature of 20.0 degrees C if its volume is 0.505 L?
90.7 atm
22.4 atm
29.3 atm
5.14 atm
5. Multiple Choice
3 minutes
1 pt
Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .988 atm pressure.
0 K
107 K
207 K
307 K
6. Multiple Choice
20 seconds
1 pt
Gases have...
A definite shape and volume
A definite shape but no definite volume
No definite shape but a definite volume
No definite shape or volume
7. Multiple Choice
30 seconds
1 pt
What is the variable for this number 22.4 L
P
T
n
V
8. Multiple Choice
30 seconds
1 pt
What is the variable for this number 32oC
P
T
n
V
9. Multiple Choice
30 seconds
1 pt
What is the variable for this number 1.5 mol
P
T
n
V
10. Multiple Choice
30 seconds
1 pt
What is 50 C in Kelvin?
223
323
100
50
11. Multiple Choice
3 minutes
1 pt
What is the temperature of natural gas in an oil pipeline if we know there are 0.91 moles of the gas in the pipeline and the volume of the pipeline is 5.43 L and the gas is exerting a pressure of 4.21 atm? R = 0.082 (L x atm) / (K x mol)
306 °C
579.4 °C
33.4 °C
- 19.3 °C
12. Multiple Choice
30 seconds
1 pt
What is the approximate volume of a 0.600 mole sample of gas at 15°C and a pressure of 1.10atm?