Question

Which is the formula mass of Na2SO4

Answer 1

142.04 g/mol

That is it

Answer 2

Step-by-step explanation:

Formula mass of a compound is calculated by taking the sum of atomic masses of all the elements present in the compound.

Since, atomic mass of Na = 23 g/mol

Atomic mass of S = 32 g/mol

Atomic mass of O = 16 g/mol

Hence, formula mass of
`Na_(2)SO_(4)` will be as follows.

Formula mass =
`(2 * 23 g/mol) + 32 g/mol + (4 * 16 g/mol)`

= 142 g/mol

Thus, we can conclude that formula mass of
`Na_(2)SO_(4)` is 142 g/mol.