Answer…./………………………….

Given data:
1). One mole of Aluminium oxide requires one mole of O2.

Required:
1) number of moles of Aluminium oxide when 15 moles of Cohen is produce?

••••••••••••••SOLUTION•••••••••••••

From the balance equation;

1 mole of Aluminium oxide when decomposes it produce 1 mole of oxygen. Similarly when 1.5 moles of Aluminium oxide decomposes it will releases 1.5 moles of oxygen.

1.5 Al2O3—————1.5 O2

And a) oxygen i believe