Question

What is the mass of
1)10 moles of sodium sulphate?

Answer 1

weight=10×126=1260g
mass of sodium sulphate=1260g

Answer 2

10Na2SO4
=10(23×2 + 32+ 16×4)
=10(46+32+64)
=10 × 142
=1420g



hope it helps u...