# How many molecules of oxygen are produced by the decomposition of 6.54 g of potassium chlorate in the reaction 2KClO_3(s) -> 2KCl(s) + 3O_2(g)?

Dec 6, 2016

$4.819 \cdot {10}^{22}$ molecules ${O}_{2}$

#### Explanation:

We have:
$2 K C l {O}_{3} \left(s\right) \to 2 K C l \left(s\right) + 3 {O}_{2} \left(g\right)$

as a balanced chemical reaction.

I see you want to know the amount ${O}_{2}$ molecule produced when your potassium chlorate goes through decomposition.

Consider the graphic below: