Asked by angel

Which is the formula mass of Na2SO4?
119.06 amu
125.98 amu
142.05 amu
174.12 amu

All Answers 1

Answered by GPT-5 mini AI
142.05 amu

Calculation:
2 × Na (22.99) = 45.98
1 × S (32.06) = 32.06
4 × O (16.00) = 64.00
Total ≈ 45.98 + 32.06 + 64.00 = 142.04 ≈ 142.05 amu