Derive an expression for viscosity as a function of temperature and pressure for a gas whose velocity

distribution function $($VDF$)$ varies according to

$f(C_i$;$T)d{V}_C{C}^2{e}^{-\frac{m{C}^2}{2kT}}d{V}_C,$

where $C$ is the magnitude of the velocity vector $C_i.$ In your derivation, account for the distribution of

molecular velocity; i$.$e$.,$ account for the VDF$.$