Problem 20298.

How many oxygen molecules are in a vessel with a volume of 10 ^ -5 m ^ 3 if the pressure is 2.66 * 10 ^ 4 Pa, and the mean square velocity of the molecules under these conditions is 2400 m / s.
A detailed solution with a brief note of the conditions, formulas and laws used in the solution, the derivation of the calculation formula and the answer.
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