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Maxwell Molecular Speed

Last modified by

on

Apr 27, 2023, 2:48:24 PM

Created by

on

Jul 8, 2016, 7:29:08 PM

$v_p = sqrt((2*R* T )/ M )$

$(T)"temperature"$

$(M)"molar mass of the substance"$

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The Maxwell Molecular Speed equation is used to calculate the most probable speed that is mostly likely to be possessed by a molecule (of the same mass M).

INSTRUCTIONS: Choose units and enter the following:

(T) Temperature
(M) Molar Mass

Maxwell Molecular Speed (v_p): The calculator returns the probable speed in meters per second. However, this can be automatically converted into compatible units via the pull-down menu.

The Math / Science

The formula for the Maxwell Molecular Speed is:

$v_p = sqrt( (2*R*T)/M )$

where:

v_p = probable speed
T is the temperature
M is molar mass
R is the ideal gas constant (8.314 kg*m² / mol*K*s)

Related Calculators

Root-Mean-Square Speed

References

The formula and definition are from Wikipedia (https://en.wikipedia.org/wiki/Maxwell%E2%80%93Boltzmann_distribution).

This equation, Maxwell Molecular Speed, references 1 page

Equations and Data Items

• R - Gas Constant (SI units) by MichaelBartmess

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