Chemistry Practice Problems Kinetic Energy of Gases Practice Problems Solution: Calculate the average kinetic energies of CH4(g) a...

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Solution: Calculate the average kinetic energies of CH4(g) and N2(g) molecules at 273 K and 546 K.

Problem

Calculate the average kinetic energies of CH4(g) and N2(g) molecules at 273 K and 546 K.

Solution
  • Average kinetic energy of gases, which is derived from the RMS (root mean square speed) and KE equation, can be solved as:

  • It appears that the average KE of gases is dependent on the temperature which means that all gases will have the same KE as long the temperature is the same
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