Question

select the correct statement(s).
raising the temperature of the gas, raises the pressure
the gas exerts in the system.
raising the temperature of the gas causes the particles
of gas to gain kinetic energy.
lowering the temperature of the gas causes the
particles of gas to lose kinetic energy.
raising the temperature of the gas lowers the pressure
the gas exerts in the system.
a gas at higher temperature and pressure has particles
that move faster and collide more often.
a gas at higher temperature and pressure has particles
that move slower and collide less often.

Explanation:

• According to the kinetic - molecular theory of gases, when the temperature of a gas is raised (at constant volume), the average kinetic energy of the gas particles increases.
• As the kinetic energy increases, the particles move faster. Since the volume is constant, the faster - moving particles collide with the walls of the container more frequently.
• Pressure is defined as the force exerted per unit area. More frequent collisions mean a greater force exerted on the walls of the container (per unit area), so the pressure of the gas increases.

Answer:

Raising the temperature of the gas, raises the pressure the gas exerts in the system.
A gas at higher temperature and pressure has particles that move faster and collide more often.