Exam 19: The Ideal Gas

According to the ideal gas law, pV = constant for a given temperature. As a result, an increase in volume corresponds to a decrease in pressure. This happens because the molecules

If the rms speed in a particular gas is doubled, the temperature of the gas is

Equal numbers of moles of nitrogen and oxygen (molecular masses about 28 and 32 respectively) are placed in two different containers. The nitrogen molecules are kept at 20^oC. If the oxygen and nitrogen molecules have the same rms speed, the temperature of the container with oxygen molecules is

The atmosphere of the Sun consists mostly of hydrogen atoms at 6.0 $\times$ 10³ K. The thermal energy per atom is

For two gases at the same temperature, the rms speed of the molecules with the smaller mass is

Sometimes it is asserted that at absolute zero "all motion ceases." The intermolecular forces at very low temperatures that support this assertion

A cubic box of volume 125 cm³ is filled with air at atmospheric pressure and temperature 20^oC. The box is closed and heated to 120^oC. The net force on each side of the box is

For a given temperature and pressure, equal volumes of different gases have the same

A storage tank at STP contains 30 kg of oxygen (O₂). If an additional 15 kg of oxygen is added to the tank without changing the temperature, the pressure in the storage tank becomes

An ideal gas is slowly expanding to twice its original volume with no change in temperature. The average speed of the molecules in the sample is

The mass of a deuterium (diatomic) molecule is roughly the same as that of an ordinary helium (monatomic) atom. If deuterium gas is at the same temperature as helium gas, the average kinetic energy of the deuterium molecules is

The molecules of a five-particle gas have these velocities: 3.0i + 4.0j, - 2.0i + j, - 5.0j, i - 2.0j, and -2.0i + 2.0j. The average speed of the gas is

Tylenol is a common painkiller containing 325 mg acetaminophen (C₈H₉NO₂). Advil is another common painkiller containing 200 mg of ibuprofen (C₁₃H₁₈O₂). The ratio of the number of molecules in Tylenol to that in Advil is

Boyle's Law states that

The temperature (in kelvins) of a gas is doubled. An increase of a $\sqrt { 2 }$ factor is observed in

Equal masses of nitrogen and oxygen (molecular masses about 28 and 32 respectively) are placed in two different containers having the same volume. The pressure of the gases in the two containers is the same. If the temperature of the oxygen is T₁, the temperature of the nitrogen is

The molecules of a five-particle gas have these velocities: 3.0i + 4.0j, - 2.0i + j, - 5.0j, i - 2.0j, and -2.0i + 2.0j. The rms speed of the gas is

The quantity that changes when we measure temperature with a constant-volume gas thermometer is

Oxygen is delivered to hospitals in special tanks at 65.0 atm and 288 K. The oxygen is pumped to the patient's room, and it is delivered at 1.00 atm and 297 K. The volume of oxygen produced by 1.00 $l$ of tank oxygen when being administered in the patient's room is

When the average speed of the molecules in a given sample of gas is doubled, the temperature is