Question

What is the mass of a formula unit of Na + C l - ?

Answer 1

Answer:

58.44 g/mol

Explanation:

atomic mass of sodium = 23

atomic mass of chlorine = 35.5

so the molicular mass of NaCl,which contains 1:1 ratio of atoms = 1×1 = 22.99 × 35.45

=58.44 g/mol