At constant temperature, does a hydrogen balloon expand, contract, or remain at

Question

At constant temperature, does a hydrogen balloon expand, contract, or remain at constant volume as it rises through the air?

Select one:

a. expand

b. contract

c. remain at constant volume

True or False: At the same temperature, 1 mole of helium gas has the same internal energy as 1 mole of argon gas.

Select one:

True

False

Which of the assumptions below is not made in the kinetic theory of gases?

Select one:

a. The number of molecules is very small.

b. The collisions between molecules are elastic.

c. The gas is a pure substance.

d. The average separation between molecules is large compared with their dimensions.

e. The molecules obey Newton's laws of motion.

Gas molecules collide with walls of a container with elastic collisions. If this were not true, and the collisions were entirely inelastic, then the molecules would stick to the wall instead of bouncing off the wall. Naturally, in the course of time that would result in a vacuum in the vessel. Suppose that the gas was behaving normally, and then all of a sudden the gas decided to collide inelastically. Before the number of gas particles declined, how would the pressure on the wall be affected?

Select one:

a. The pressure would be zero.

b. The pressure would double.

c. The pressure would remain unchanged.

d. The pressure would be halved.

Explanation / Answer

At constant temperature, a hydrogen balloon expand its volume as it rises through the air. Because the pressure of the gas is lower in above than that of ground.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.