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12 August, 03:46

Two gases have the same temperature but different pressures. The kinetic-molecular theory does not predict that a. molecules in both gases have the same average kinetic energies. b. molecules in the low-pressure gas travel farther before they collide with other molecules. c. both gases have the same densities. d. all collisions of the molecules are elastic.

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  1. 12 August, 04:03
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    Answer: Option (c) is the correct answer.

    Explanation:

    Kinetic molecular theory states that particles of a matter are continuously in motion and these molecules represent perfect elastic collision.

    So, at the same temperature but different pressures the two gases will have all collisions of the molecules as elastic in nature. It is also possible that molecules in both gases have the same average kinetic energies under given conditions as their molecules might be moving with the same speed.

    But we cannot determine the densities of these gases.

    Thus, we can conclude that the kinetic-molecular theory does not predict that both gases have the same densities.
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