Sara W.
1 Expert Answer
Robert S. answered • 02/27/21
Patient PhD Chemist with 40 Years of R&D And Teaching
Hello, Sara,
The balanced equation tells us that we get 3 moles of O2 for every 2 moles of KClO3.
We can form a molar ratio:
(3/2)(moles O2/moles KClO3)
If we start with 3.0 moles KClO3, we'll get
(3/2)(moles O2/moles KClO3)*(3 moles KClO3) =
(3/2)*(3.0) moles O2, or 4.5 moles of O2.
Bob