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Helium gas in a container is put into an industrial, high-powered freezer. What happens to the average kinetic energy of the helium particles? *
1 point
It increases quickly.
It remains the same.
It decreases slowly.
It decreases rapidly.
In the diagram below, the orange sphere represent gas molecules and the length/direction of the arrows represents their velocity. If both gases are at the same temperature, which of them has the lower pressure? *
1 point
Captionless Image
gas 1 because the particles are moving much faster
gas 2 because it has more particles that are colliding
gas 1 because it has fewer particles that are farther apart
gas 2 because the particles have more space between them
A perfume bottle is opened on one side of a room. Over the course of a minute, the perfume smell can be sensed on the other side of the room. Describe what is occurring, using the kinetic molecular theory and your understanding of gases. *
1 point
Captionless Image
Particles are moving through a small opening into a larger volume.
Particles are moving from regions of high concentration to low concentration.
Particles are moving from regions of low concentration to high concentration.
Particles are moving through a small opening into a smaller volume.
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