## Chemistry 12th Edition

We know that percentage composition shows the percentage of molar mass of a substance present in a compound. We can find the percentage composition of ammonia as follows: $N=\frac{14.01g\space N}{17.034g\space NH_3}\times 100=82\%$ $H=\frac{3.024g\space H}{17.03g\space NH_3}\times 100=18\%$