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Keep in mind that when two moles of potassium chlorate are decomposed, 3 moles of oxygen are produced.Think of  the coefficients: since the mole ratio is 2 to 3, it means that 2 mol KClO3 will turn into 3 mol O2.

2kclO3->2kcl+3O2

Answer:

the answer is c

Explanation:

3