A $0\mathrm{.}123g$ mixture of $KCl{O}_3$ and a catalyst was placed in a quartz tube and heated vigorously to drive off all the oxygen as $O_2.$ The $O_2$ was collected at $22\mathrm{.}6C$ and a pressure of $1\mathrm{.}063$ bar. The volume of gas collected was $26\mathrm{.}9ml.$

How many moles of $O_2$ were produced?

mole

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How many moles of $KCl{O}_3$ were in the original mixture?

iole

What was the mass percent of $KCl{O}_3$ in the original mixture?

i

percent