Question

help me with this question ......​

Answer 1

Answer:

here is your answer dear

Answer 2

Answer:

◀Molecular Formula : Na2SO4.

◀Molecular Mass : 46 + 32 + 64 = 142 u.

Mass % of different elements -

1) Na = 46 / 142 × 100 = 32.3 %

2) S = 32 /142 × 100 = 22.53%

3) O = 64/142 ×100 = 45.07%