Graphing maxwell boltzmann graphs using LaTeX

ghostanime2001

Hello I am trying to make a maxwell-boltzmann distribution of Kinetic Energy vs. # of molecules graph at 2 different temperatures (please see attachment). What is the correct equation ? I have a feeling it's the first equation under the heading "Kinetic Energy Distribution in Three Dimensions" on this website: http://hyperphysics.phy-astr.gsu.edu...maxspe.html#c2

Thanks!

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