Question

2KClO3 = 2KCl + 3O2. How many moles KClO3 are required to produce 22.8 moles oxygen gas?

Answer 1

According to equation-

3 moles oxygen is produced by 2 moles of $KClO_3$

So,

22.8 moles oxygen will be produced by $\frac{2}{3}\times22.8=15.2\ moles\ K ClO_3$