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2 KClO3(s) → 2 KCl(s) + 3 O2(g) What is the percentage yield of O2 if 12.3 g of KClO3 (molar mass 12Stoichiometry Chemistry Question

Question

2 KClO3(s) → 2 KCl(s) + 3 O2(g)

What is the percentage yield of O2 if 12.3 g of KClO3 (molar mass 123 g) is decomposed to produce 3.2 g of O2 (molar mass 32 g) according to the equation above?

A.

100%

B.

67%

✓ Correct
C.

50%

D.

33%

E.

10%

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