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If a gas expands at constant temperature, it indicates that:

  1. A
    Number of the molecules of gas increases
  2. B
    Kinetic energy of molecules decreases
  3. C
    Pressure of the gas increases
  4. D
    Kinetic energy of molecules remains the same

Solution & Step-by-step Explanation

According to the kinetic theory of gases, the average kinetic energy of gas molecules is directly proportional to the absolute temperature:

If the temperature remains constant during expansion, the average kinetic energy of the molecules also remains the same.

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If a gas expands at constant temperature, it indicates that:
A
Number of the molecules of gas increases
B
Kinetic energy of molecules decreases
C
Pressure of the gas increases
D
Kinetic energy of molecules remains the same

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States of MatterKinetic TheoryIdeal Gas

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