$4)$ An airstream containing $30$ mol$\%$ ammonia flows at the rate of $100$ mol$/$s at $298$ K and $1\mathrm{.}0$ atm. It will be processed in an absorber where it will be put in contact with liquid water to remove $90\%$ of the ammonia. The water entering the absorber contains $2\mathrm{.}0$ mol$\%$ ammonia, and it will be supplied at a molar rate that is $1\mathrm{.}5$ times the minimum rate. Ammonia$-$water solutions at these conditions obey Henry's law with a value of m $=1\mathrm{.}414.$ a$)$ Calculate the molar flow rate of the liquid entering the column, in mol$/$s $($do not forget the ammonia in this stream$).$ b$)$ Calculate the mol fraction of ammonia in the liquid leaving the absorber$.5)$ a gaseous stream containing $13\mathrm{.}0$ mol$\%$ of component A flows at the rate of $100$ mol$/$s at $298$ K and $1\mathrm{.}0$ atm. It will be processed in an absorber where it will be put in contact with a pure nonvolatile solvent $($in which only component A is soluble$)$ to remove $80\%$ of the component A present in the incoming gas. The solvent will be supplied at a molar rate that is $1\mathrm{.}25$ times the minimum rate. Mixtures of component A and the solvent are ideal solutions. The vapor pressure of component A at $298$ K is $30\mathrm{.}4$ kPa. a$)$ Calculate the molar flow rate of the liquid entering the column, in mol$/$s$.$ b$)$ Calculate the mol fraction of component A in the liquid leaving the absorber$.$