9 moles
Given the chemical reaction below;
[tex]2KClO_3→2KCl+3O_2[/tex]According to stoichiometry, 2 moles of KClO3 produces 3 moles of O2.
Given the following parameters
Moles of KClO3 = 6 moles
The moles of oxygen that is produced is given as;
[tex]\begin{gathered} moles\text{ of O}_2=\frac{3}{2}\times6moles\text{ of }KClO_3 \\ moles\text{ of O}_2=9moles \end{gathered}[/tex]Hence the moles of O2 that will be produced is 9 moles