Gases

Question 1

Imagine the movement of gas particles in a closed container. According to the kinetic molecular theory, which statements below are true of the gas particles? Check all that apply.

Revolt · Accepted Answer

A: Gas particles act like tiny, solid spheres.; B: Gas particles are in constant, random motion.; D: Collisions are elastic, there is no energy lost as the particle hits the sides of the container.

Question 2

A student checks the air pressure in her bicycle tires early in the morning when it is cool outside. If she measures it again later in the day when it is hotter, what will she most likely observe?

Revolt · Accepted Answer

B: The pressure has increased.

Question 3

Both hydrogen sulfide (HS) and ammonia (NH) have strong, unpleasant odors. Which gas has the higher effusion rate?

Revolt · Accepted Answer

B: NH

Question 4

A chemist is studying the properties of a gas under various conditions. He observes that when the gas is at room temperature and low pressure, it behaves as an ideal gas. When the gas is cooled to 10 kelvin (–263ºC) and is placed under high pressure, however, it deviates significantly from an ideal gas. There are multiple reasons for this phenomenon. Check all of the correct reasons below.

Revolt · Accepted Answer

A: The ideal gas model assumes that gas particles experience no intermolecular attractions and these forces cause the gas to deviate from ideal behavior.; B: At very low temperatures, gas particles move slowly.; C: At very high pressures, gas particles are very close together.

Question 5

If you opened a container of each gas in a corner of a large room, which odor would you detect first on the other side of the room?

Revolt · Accepted Answer

B: NH

Gases Answers

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