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13 May, 13:01

Cylinder A contains a gas whose molecules have an average speed of 0.0000001 meters/sec. Cylinder B contains a gas whose molecules have an average speed of 0.3 meters/sec. Select the statement below that is true regarding these cylinders. options: A. Cylinder A contains a gas that has a temperature closest to absolute zero. B. Even though the molecules are moving at different speeds in the two cylinders, they have the same kinetic energy. C. Cylinder B contains molecules that are moving more slowly than the molecules in Cylinder A. D. Cylinder B contains a gas that has a temperature closest to absolute zero.

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Answers (2)
  1. 13 May, 13:41
    0
    Cylinder A contains a gas that has a temperature closest to absolute zero.

    Explanation:

    The kinetic energy of gas molecules are dependent upon the temperature of the gas. Higher the temperature, higher the kinetic energy. Higher the kinetic energy higher the velocity. The gas molecules of cylinder B has very small velocity. So their kinetic energy is very small. Therefore the temperature of the gas must be very low. As the velocity is almost zero, it may be possible that the temperature of gas is close to absolute zero which is the smallest temperature possible.
  2. 13 May, 15:29
    0
    Option A, Cylinder A contains a gas that has a temperature closest to absolute zero

    Explanation:

    The speed of gas molecules is cylinder B is higher than that of cylinder A. Hence, option C is incorrect.

    Also at absolute temperature, the rms speed of gas molecules is equal to zero. Speed of gas in cylinder B has a temperature is much higher than speed nearing to zero.

    Hence, option D is also incorrect.

    Kinetic energy can not be equal because for gas in cylinder A, the mass should be quite high.

    Hence, option A is the only right answer.
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Home » Chemistry » Cylinder A contains a gas whose molecules have an average speed of 0.0000001 meters/sec. Cylinder B contains a gas whose molecules have an average speed of 0.3 meters/sec. Select the statement below that is true regarding these cylinders. options: A.
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