Question

how much maximum mass of aluminium can be obtained from 100g of AL2(SO4)3

Answer 1

I hope this helps you

Answer 2

Molar mass of Al2(SO4)3 = 27×2 + 96×3
= 54+288 = 342
Thus, No. of moles of Al2(SO4)3 = 100/342
Hence, No. of moles of Al =
$2 \times \frac{100}{342}$
$= \frac{100}{171}$
$= 0.584$
Thus , Max mass of Al = 0.584×27 = 15.768g ......ans...