Air, containing $79$mol$\%$ nitrogen $(N_2)$ and $21$mol$\%$ oxygen $(O_2),$ is split into two product streams by a separator operating at steady state. One product stream is $98$mol$\%O_2$ and contains $80\%$ of the oxygen in the air fed to the separator. The other stream is mostly nitrogen. You must produce $1\mathrm{.}543$ ton$/$day of the enriched oxygen product stream. Solve for the unknowns in this process following the general strategy for approaching material balance problems.