Question

The pressure in a gas arises because the particles of a gas strike each other and the walls of their container, exerting a(n) _____ . The greater the number of gas particles in a particular volume, the _____ the pressure within the gas.

a) Force, higher
b) Energy, lower
c) Force, lower
d) Energy, higher

Answer 1

The pressure in a gas arises because the particles of a gas strike each other and the walls of their container, exerting a _Force_ . The greater the number of gas particles in a particular volume, the _higher_ the pressure within the gas.

How to complete the statements?

Pressure in a gas arises because the particles of a gas strike each other and the walls of their container, exerting a force. The force per unit area is what defines pressure. When gas particles collide with each other and with the walls of the container, they transfer momentum, resulting in a force exerted on the container walls.

The greater the number of gas particles in a particular volume, the higher the pressure within the gas. This is because with more particles, there are more collisions occurring, and therefore, there is a higher frequency of force exerted on the walls of the container. Mathematically, pressure (P) is related to the number of gas particles, temperature (T), and volume (V) by the ideal gas law:

P*V = n*R*T

Where R is a constant.

If we assume a constant temperature and volume, then an increase of n (number of particles) implies an increase of the pressure P.

Answer 2

The pressure in a gas arises from the particles exerting a force on container walls, with a greater number of particles causing higher pressure. The correct answer is a) Force, higher.

Step-by-step explanation:

The pressure in a gas arises because the particles of a gas strike each other and the walls of their container, exerting a force. The greater the number of gas particles in a particular volume, the higher the pressure within the gas. Therefore, the correct answer to this question is a) Force, higher.

The kinetic theory of gases indicates that gas particles are always in motion and the collisions that occur between them and the walls of their container are what cause pressure. As you increase the number of gas particles within a given volume, the number of collisions increases, leading to an increased force on the walls, and thus, an increased pressure.

Moreover, if the average velocity of the gas particles is higher, indicating a higher temperature, the gas pressure will be higher as well due to the particles' greater kinetic energy leading to more impactful collisions with the walls of the container.