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Mean free path of air particles

Values for calculation

$R^*$ $\mathrm{J\cdot K^{-1}\cdot kmol^{-1}}$
$N_A$ $\mathrm{kmol^{-1}}$
$σ$ $\mathrm{m}$
$T$ $\mathrm{K}$
$p_{air}$ $\mathrm{Pa}$

Calculation

Mean free path of air particles

$$l=\cfrac{R^*}{\sqrt{2}\cdot π\cdot N_A\cdot σ^2}\cdot\cfrac{T}{p_{air}}$$
$l=\cfrac{R^*}{\sqrt{2}\cdot π\cdot N_A\cdot σ^2}\cdot\cfrac{T}{p_{air}}$
Equations in LaTeX code
l=\cfrac{R^*}{\sqrt{2}\cdot π\cdot N_A\cdot σ^2}\cdot\cfrac{T}{p_{air}}
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