Question

The equation 2Al(S) + 3/2O2(g) =Al2O3 ahow that
1. 2 mole of Al reacts with 3/2 mole of O2 to produce 7/2 mole of Al2O3
2. 2 mole of Al reacts with 3/2 mole of O2 to produce 1 mole of Al2O3

Answer 1

we can infer it that the quantity of a substance can be characterised by its mass or the no of molecules