`P =1/3(Nmoverline(v^2))/V`

`overline(KE)=1/2moverline(v^2)=3/2kT`

`v_(rms) = sqrt(overline(v^2))= sqrt((3kT)/m)`

`J = DA(C_1 - C_2)/(∆x)` `J` is the mass movement per second. `D` is the diffusion constant. `C` is concentration.