Question

Write the molecular formula of the following compounds of Ammonia

Find the number and names of elements present in them and calculate their molecular masses.

Answer 1

Ammonia

1. A molecule of ammonia is represented by the formula NH₃.
2. The elements present in it are nitrogen and hydrogen.
3. One molecule of ammonia has one atom of nitrogen and three atoms of hydrogen.
4. Molecular mass of ammonia (NH₃)
   = 14 + 3 x 1
   = 14 + 3
   = 17 amu.