Answer to Question #305709 in General Chemistry for shanie

Question #305709

Find the percent by mass of oxygen (O) in potassium chlorate, KClO3.

Expert's answer

As we know that , the molar mass of KClO3=39+35.5+48g =122.5g

So, the percentage by mass of oxygen(O)

="\\frac{48}{122.5}\u00d7100" = 39.18%

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