Question

How many moles of aluminium are in 3.45 moles of pyrophyllite

Answer 1

Step-by-step explanation:

You can see that in each molecule of Al2Si4O10(OH)2 there are 2 atoms of Al

so

moles Al = 2 x moles Al2Si4O10(OH)2

= 2 x 2.70 mol

= 5.40 moles of Al