WorksheetsGas Laws
Total questions: 15
Worksheet time: 35mins
A sealed vessel contains 0.200 mol of oxygen gas, 0.100 mol of nitrogen gas, and 0.200 mol of argon gas. The total pressure of the gas mixture is 5.00 atm. The partial pressure of the argon is
0.200 atm
0.500 atm
1.00 atm
2.00 atm
The volume of a sample of helium is 4.5 mL at 20.0°C and 203.0 kPa. What will its volume be in the figure?
2.25 mL
3.78 mL
4.34 mL
6.85 mL
At an ocean depth of 10.0 m, a diver’s lung capacity is 2.40 L. The air temperature is 32.0°C and the pressure is 101.30 kPa. What is the volume of the diver’s lungs at the same depth, at a temperature of 21.0°C and a pressure of 141.20 kPa?
1.12 L
1.66 L
1.78 L
4.86 L
What volume does .0685 mol of gas occupy at STP?
0.3707 mol
0.7515 mol
1.53 L
3.06 L
Calculate the molar mass of a gaseous substance if 0.125 g of the gas occupies 93.3 mL at STP.
30.0 g/mol
30.2 g/mol
30.4g/mol
30.6 g/mol
None of the above
Three gases, Ar, N2, and H2 are mixed in a 500L container. Ar exerts a pressure of 255 torr, N2 exerts a pressure of 228 torr and H2 exerts a pressure of 752 torr. What is the total pressure in the container?
483 torr
270 torr
1235 torr
269 torr
A 250 mL sample of oxygen is collected over water at 25° C and 760.0 torr pressure. What is the pressure of the dry gas alone? (Vapor pressure of water at 25° C = 23.8 torr)
783.8 torr
205.38 torr
1250 torr
736.2 torr
A mixture of 3.00 moles of Ar, 4.50 moles of H2O, 1.75 moles of N2, and 6.00 moles of CO2 exerts a total pressure of 800. torr. What is the partial pressure exerted by the carbon dioxide gas?
(a)
Determine the mole fraction of argon in a mixture of 0.43 moles of argon mixed with 3.2 moles of carbon tetrachloride (CCl4).
.01
.12
1.5
.09
A sample of gas has an initial volume of 13.9 L at a pressure of 1.22 atm. If the same is compressed to a volume of 10.3 L, what is its pressure?
1.65 atm
1.11 atm
0.904 atm
0.00852 atm
A syringe containing 1.55 mL of oxygen gas is cooled from 95.3 o C to 0.0 o C. What is the final volume of the oxygen gas?
0.0 mL
2.09 mL
1.15 mL
4.44 mL
A cylinder with a moveable piston contains 0.553 mol of gas and has a volume of 253 mL. What is its volume if an additional 0.365 mol of gas is added to the cylinder?
419 mL
152 mL
128 mL
167 mL
The density of an unknown gas is 2.00 grams per Liter at 3.00 atmosphere pressure and 127oC. What is the molar mass of this gas?
(254/3) R
188 R
(800/3) R
600 R
The density of N2O at 1.52 atm and 45.2ºC is ____ g/L.
0.388 g/L
2.58 g/L
9.99 g/L
1.76 g/L
18.2 g/L
