The formula is given by:
\[ v_{\mathrm{rms}} = \sqrt{\frac{3kT}{m}} \]
where \( k \) is the Boltzmann constant (\(1.38 \times 10^{-23} \, \mathrm{J/K}\)), \( T \) is the temperature in Kelvin, and \( m \) is the mass of a single gas particle in kilograms.
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