Question

Consider the reaction below. 2Al2O3 4Al + 3O2 How many moles of oxygen are produced when 26.5 mol of aluminum oxide are decomposed? 17.7 mol19.9 mol39.8 mol53.0 mol

Answer 1

Answer : C . ) 39.8 Is The Correct Answer

Answer 2

2 Al2O3 = 4 Al + 3 O2

2 moles Al2O3 ------------ 3 moles O2
26.5 moles ----------------- moles O2

moles O2 = 26.5 * 3 / 2

moles O2 = 79.5 / 2 => 39.8 moles O2