$100$ mol s$-1$

of a feed stream containing $75\mathrm{.}16$ mol$\%$ hydrogen, $24\mathrm{.}57$ mol$\%$ nitrogen

and $0\mathrm{.}27$ mol$\%$ argon is mixed with $890$ mol s$-1$

of a process recycle stream containing $80\mathrm{.}01$

mol$\%$ hydrogen, $11\mathrm{.}54$ mol$\%$ nitrogen and $8\mathrm{.}45$ mol$\%$ argon. The mixture is passed to a

reactor in which $9\mathrm{.}22$ mol$\%$ of the hydrogen is converted into ammonia over an iron

catalyst according to the reaction

$3$

Fe N$2+3$H$2->2$NH

Calculate

a$)$ The production rate of ammonia

b$)$ The composition of the reactor exit stream