Question

How many moles of aluminum oxide will be produced from 0.50 mol of oxygen? 4 al + 3 o2 2 al2o3?

Answer 1

From the equation;
 4 Al + 3 O2 = 2 Al2O3
The mole ratio of Oxygen is to Aluminium hydroxide is  3:2.
Therefore; moles of Al2O3 is 
 (0.5/3 )× 2 = 0.333 moles
Therefore; The moles of aluminium oxide will be 0.333 moles

Answer 2

Answer : The number of moles of aluminum oxide produced will be 0.33 moles.

Explanation : Given,

Moles of $O_2$ = 0.50 mole

The given chemical reaction is:

$4Al+3O_2\rightarrow 2Al_2O_3$

From the balanced chemical reaction we conclude that,

As, 3 moles of $O_2$ react to give 2 moles of $Al_2O_3$

So, 0.50 moles of $O_2$ react to give $\frac{0.50}{3}\times 2=0.33$ moles of $Al_2O_3$

Therefore, the number of moles of aluminum oxide produced will be 0.33 moles.