Question

The molecular mass of Na₂CO₃ is ___.

Answer 1

Molecular mass is equal to the sum of the masses of its constituent atoms.

Therefore, the molecular mass of ${Na}_2{CO}_3=(2\times$ atomic mass of $Na$) $+(1\times$ atomic mass of $C)+(3\times$ atomic mass of $O)$

$=(2\times 23)+(1\times 12)+(3\times 16)$

$=46+12+48$

$=106g$