Question

calculate the formula mass of calcium chloride and sodium carbonate.

Answer 1

Dear Student,

The formula mass can be calculated in a similar manner as the molecular mass. Actually both of them are same. The difference lies in the fact that the molecular mass is the mass of a molecule, while formula mass is the mass of an ionic compound.

So, for CaCl2, it can be calculated as (1 χ 40 + 2 χ 35.5) = 110

For Na₂CO₃,it can be calculated as (2 χ 23 + 1 χ 12 + 3 χ 16) = 106

Hope, this answers your question.

Best wishes!