# Question a3d1b

Jul 14, 2017

22.23%

#### Explanation:

If you mean the mass percent, the equation for finding it is

mass % = [ (mass of element) $/$ (mass of substance) ] *100%

The total mass of $H N {O}_{3}$ is $\approx 63.02 \frac{g}{m o l}$. The mass of nitrogen is about $14.01 \frac{g}{m o l}$.

14.01/63.02 * 100% = 22.23%# N by Mass