Consider ammonia gas at $150C$ is contained in an industrial tank with a

volume of $137L.$ The mass of the ammonia in the tank is $7\mathrm{.}4kg.$ Given

the critical temperature is $405\mathrm{.}55K$ and critical pressure is $1\mathrm{.}13{10}^{7}Pa.$

A$)$ Determine the pressure in the tank using the Redlich$-$Kwong

equation of state. Answer: $8\mathrm{.}2$ Mpa

B$)$ Determine the pressure in the tank using the van der Waals equation

of state. Answer: $8\mathrm{.}4$ MPa