Question

Calculate the mass of 1 atom of nitrogen.

Answer 1

1. The molar mass of a compound defines the mass of 1 mole of that substance.
2. We can also say the gram atomic mass is the total mass of all the atoms in grams that make a mole of atoms.

Given:

1. Molar mass of nitrogen = 14gmol^-1
2. We can say the mass of 1 mole of Nitrogen = 14g
3. Number of atoms of Nitrogen in 1 mole = 6.022 x 10²³
4. We can say the mass of 6.022 x 10²³ atoms is 14g

Now,

5. $\mathrm{Mass}\mathrm{of}6.022\mathrm{x}{10}^{23}\mathrm{atoms}=14\mathrm{g}$

6. $\mathrm{Mass}\mathrm{of}1\mathrm{atom}=\frac{14}{6.022\mathrm{x}{10}^{23}}\mathrm{g}$

7. $\mathrm{Mass}\mathrm{of}1\mathrm{atom}=2.32\mathrm{x}{10}^{23}\mathrm{g}$

Final Answer

The mass of 1 atom of Nitrogen is $2.32\mathrm{x}{10}^{-23}\mathrm{g}.$