Ammonia gas is passed into water, yielding a solution of density $0.93gram/c{m}^3$and containing 18.6% $N{H}_3$by weight. The mass of $N{H}_3$per cc of the solution is___?

Let 100 gram solution is taken.

$\text{M=V×d where M is mass of solution,V is volume of solution and d is density of solution.}$

$V_{solution}=\frac{M}{d}=\frac{100gram}{0.93gram/c{m}^3}=107.5c{m}^3$

$massofN{H}_{3}perc.c=\frac{18.6}{107.5}=0.17298gram/c{m}^3=0.17gram/c{m}^3$

$massofN{H}_{3}perc.c=\frac{18.6}{107.5}=0.17298gram/c{m}^3=0.17gram/c{m}^3$