Gas pressure and temperature

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Question 18
Medium

A sealed, rigid steel cylinder contains a sample of helium gas. The cylinder is moved from a warm laboratory into a cryogenic cooling chamber, causing the temperature of the gas to decrease significantly.

The volume of the cylinder remains constant.

By considering the motion, speed, and collisions of the helium atoms, explain how this temperature decrease affects:

  • the average kinetic energy of the helium atoms
  • the pressure exerted by the gas on the inside walls of the cylinder.
[6]

Gas pressure and temperature Questions

  1. GCSE
  2. /Physics
  3. /Gas pressure and temperature