Question

Calculate the molecular masses of H₂.

Answer 1

1. Molar mass is the sum of the masses of all the individual atoms present in a molecule or compound
2. The atomic mass of Nitrogen N is 14u.
3. The atomic mass of hydrogen H is 1u.
4. The atomic mass of Oxygen is 16u.
5. The atomic mass of carbon is 12u.
6. The atomic mass of chlorine is 35.5u.
7. $\mathrm{Molecular}\mathrm{mass}\mathrm{of}{\mathrm{H}}_2=2\mathrm{x}\mathrm{Atomic}\mathrm{mass}\mathrm{of}\mathrm{hydrogen}$
8. $=2\mathrm{x}1$
9. $=2\mathrm{g}/\mathrm{mole}$

The molar mass of H₂ is 2g/mole.