# Problem: How is the root mean square velocity of a gas related to its molar mass?

###### FREE Expert Solution

When calculating for root mean square speed (μrms), we will use the following equation:

$\overline{){{\mathbf{\mu }}}_{{\mathbf{rms}}}{\mathbf{=}}\sqrt{\frac{\mathbf{3}\mathbf{RT}}{\mathbf{M}}}}$

µrms = rms speed,
R = 8.314 J/(mol·K)
T = temperature, K
M = molar mass, kg/mol

From the equation:

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###### Problem Details

How is the root mean square velocity of a gas related to its molar mass?