Retrieving "Kilogram Per Mole" from the archives

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1. Root Mean Square Speed

   Linked via "kilograms per mole"

   $$v_{rms} = \sqrt{\frac{3 R T}{M}}$$
   Here, $R$ is expressed in units compatible with energy per mole per Kelvin (e.g., $\text{J} \cdot \text{mol}^{-1} \cdot \text{K}^{-1}$), and $M$ is the molar mass in kilograms per mole ($\text{kg} \cdot \text{mol}^{-1}$). This form is particularly useful for calculations involving macroscopic gas samples.
   Context within Speed Distributions