Question

Find the molecular mass of methane $$(\mathrm{CH}_{4})$$. 
Atomic mass - $$(\mathrm{C}=12 \mathrm{u} ; \mathrm{H}=1 \mathrm{u})$$.

Answer 1

The molecular mass is found by adding the atomic masses of one C atom and four H atoms.

Thus, $$(\mathrm{CH}_{4})$$ has molecular mass = (12 × 1) + (1 × 4) = 16 u. Therefore, the molecular mass of methane is 16 u.