Mass of oxygen in magnesium oxide

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Magnesium combines with oxygen to form magnesium oxide. If 21.56 g of magnesium reacts completely with 5.41 g of oxygen, what is the percent by mass of oxygen in magnesium oxide?

Reference no: EM13910293

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Mass of oxygen in magnesium oxide : Magnesium combines with oxygen to form magnesium oxide. If 21.56 g of magnesium reacts completely with 5.41 g of oxygen, what is the percent by mass of oxygen in magnesium oxide?
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