Exam 11: Properties of Gases

How many liters of oxygen gas, measured at STP, are required for the complete combustion of 6.01 grams of pentane (C₅H₁₂)?

How many liters of pure oxygen gas, measured at 45.2 °C and 104.0 kPa, are required for the complete combustion of 5.60 L of acetaldehyde gas (C₂H₄O), measured under the same conditions of temperature and pressure?

0.950 mole of hydrogen gas has a volume of 2.00 L at a certain temperature and pressure. What volume would 0.125 moles of this gas at the same temperature and pressure occupy?

What volume would 11.2 g of a gaseous compound occupy at STP if its molecular weight is 56.0 g/mole and it behaves as an ideal gas?

A gas sample has a volume of 1424 liters at STP. How many moles of gas are there in the sample?

On a spring morning (20°C)you fill your tires to a pressure of 50 psi (lb. in.²). As you ride along, the tire heats up to 50°C from the friction on the road. What is the pressure in your tires after your drive?

The gas N₂O is used in whipped cream cans because it has ________, and it is a ________ molecule, which allows it to dissolve in the fats in the cream.

A closed-end mercury manometer is being used to measure gas pressure in a container designed for studies on the gases. In a particular experiment, the mercury in the closed end of this manometer was 622 mm above the U-neck, while the level in the end connected to the container was measured as 252 mm above the U-neck. What is the pressure, in torr, in the gas collection manifold?

A sample of a gas was isolated in a gas containment chamber. The volume of the chamber was 1.245 cubic meters. The temperature was 22.80 °C, and the pressure was 88.26 kPa. What volume would this gas sample occupy at STP?

Three spheres having the same volume are filled with gases at the same temperature and pressure. The gas in sphere A is pure hydrogen, the gas in sphere B is pure carbon monoxide, but the gas in sphere C is a mixture of hydrogen and carbon monoxide. Based on the gas laws and molecular formulas, all three spheres contain the same number of atoms.

A small bubble rises from the bottom of a lake, where the temperature and pressure are 6.0°C and 2.80 atm, to the surface of the water. The temperature of the water at the surface is 23.5°C and the atmospheric pressure is 1.05 atm. Based on this information, if the volume of the bubble is 1.8 mL at the bottom of the lake, then the volume of the bubble at the surface would be ________.

A cylinder fitted with a movable piston and filled with a gas has a volume of 16.44 liters at 22.4 °C when the applied pressure is 772.2 torr. The temperature of the oil bath surrounding it was increased to 184.4 °C and the load on the piston was changed. Careful measurement now gave a value of 16.60 liters for the volume. What is the final pressure in the system?

What would a pressure reading of 565 torr be in units of atmospheres?

A sample of a gas in a cylindrical chamber with a movable piston occupied a volume of 6.414 liters when the pressure was 850 torr and the temperature was 27.2 ^°C. The pressure was readjusted to 4423 torr by moving the piston. What is the volume occupied by the sample under the new conditions if the temperature remained constant throughout?

A gas-filled balloon on a warm day (30°C)filled with a volume of 12.5 L at 0.95 atm is allowed to rise to the stratosphere where the temperature is -5°C and the external pressure is 1.0 millibar. What is the final volume of the balloon?

Calculate the density of CO gas at 25°C and 1.75 atm pressure.

A mixture of 5.00 moles of neon and 3.00 moles of nitrogen occupy a volume of 36.0 L in a vessel where the total pressure is 6.00 atm. The partial pressure of the neon in the container is

The product, for a real gas.

At 298 K a sample of 2.00 moles of oxygen gas would have ________ average kinetic energy as 4.00 moles of neon gas.

A gas sample weighing 3.78 grams occupies a volume of 2.28 L at STP. What is the molecular mass of the sample?