The root mean square speed of the molecules of a gas is

  • A
    Independent of its pressure but directly proportional to its Kelvin temperature
  • B
    Directly proportional to the square roots of both its pressure and its Kelvin temperature
  • C
    Independent of its pressure but directly proportional to the square root of its Kelvin temperature
  • D
    Directly proportional to both its pressure and its Kelvin temperature

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