Question

How many ions are in 284 g of sodium sulfate? Na2SO4

Answer 1

Molar weight of Na2SO4 (2x23) + 32 + (4×16) = 142g

So one mole (142g) contains 3 moles of ion.

248g of compound = 2 moles of compound = 2x3 moles of ions

I.e 6 moles ions = 6 x 6022x 10^23 ions

= 36.132 x 10^23 ions