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gogolik [260]
3 years ago
6

Which of the following would have the highest average kinetic energy?

Chemistry
1 answer:
IgorLugansk [536]3 years ago
8 0

Answer:

N₂ gas at 50 °C.

Explanation:

  • From the postulates of the kinetic theory of gases; <em>all gases at a given temperature have the same average kinetic energy</em>.
  • The average kinetic energy of gases can be calculated from the relation: K = \frac{3 R}{2NA} T.

Where, K is the average kinetic energy (measured in Joule),

R is the general gas constant (R = 8.314 J/mol.K)

NA is Avogadros number (6.023 x 10²³ atoms/mol)

T is the temperature (measured in Kelvin).

  • It is clear from the relation that K depends only on the temperature.
  • So, N₂ gas at 50 °C has the highest average kinetic energy since it is at the higher temperature than other gases.


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