A 0.842 mol sample of Xe gas is confined in a 20.6 liter container at 24.9 °C. I

Question

A 0.842 mol sample of Xe gas is confined in a 20.6 liter container at 24.9 °C.

If the temperature of the gas sample is decreased to 6.40 °C, holding the volume constant, the pressure will decrease because:

Choose all that apply.

With lower average speeds, on average the molecules hit the walls of the container with less force.

With higher average speeds, the molecules hit the walls of the container more often.

At lower temperatures molecules have lower average speeds.

As the number of molecule-wall collisions increases, the force per collision decreases.

None of the Above

Explanation / Answer

At lower temperature molecules have lower speed

With lower average speed, on average the molecule hit the walls of the container with less force

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