Hello, Sara,
2KClO3 --> 2KCl + 3O2
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
Nathan K.
Not helpful. The answer is not in grams, my friend. There for you have failed.
Report
02/16/23
Robert S.
tutor
Thanks for the comment, Nathan. But the question requests moles of O2, not grams. Please clarify your comment if I'm missing something.
Kaitlyn - The reaction is a decomposition. Two molecules of KClO3 decompose into 2 KCL and 3O2 molecules.
Report
02/16/23
Kaitlyn G.
is that because it is a decomposition or consistency?10/29/21