Maxwell Boltzmann speed distribution curve
The y axis of the graph shows the probablity that the speed of a molecule in a gas lies between x metres per second and and x + 1 metres per second. The curve shown corresponds to a temperature of about 80 K

Notice that:

Graph of the formula

The quicktime animation below shows the effect on the MB curve of heating from around 80 K to 500 K.


The graphs above are based on the formula shown below.

y=[if(4/sqrt(pi)*[m/(2*k*T)]^(3/2)*x^2*exp([-1/2*m*x^2/(k*T)]),x>0)]

y=[if(4/sqrt(pi)*[n/(2*k*T)]^(3/2)*x^2*exp([-1/2*n*x^2/(k*T)]),x>0)]

k is the value of the Boltzmann constant, m is the mass of a helium atom and n is the mass of an argon atom

k=1.38*10^(-23),T=10*b

m=4*1.667*10^(-27),n=40*1.667*10^(-27)

This file was created by Graphing Calculator 3.0.
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