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A 15.33 g sample of magnesium oxide is found to contain 12.67 g of magnesium. What is the percent (by mass) composition of the magnesium in the compound?
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A 15.33 g sample of magnesium oxide is found to contain 12.67 g of magnesium. What is the percent (by mass) composition of the magnesium in the compound?

User Jack Simpson
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12.67 g / 15.33 g x 100 % = 82.64% Magnesium (Mg)
User JustABill
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