It is shown that the formula available in the literature for the distribution of the mean free paths of gas molecules, independent of pressure and temperature, produces obviously incorrect results. Accordingly, a conclusion is given for another formula for a given distribution, which depends on the size of the gas molecules, as well as temperature and pressure. In accordance with this formula, the distribution curve for oxygen at 1000 K and pressures 1 and 0.001 atm has been calculated.
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