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a 25.0-gram sample of magnesium oxide contains 10.8 grams of magnesium. what is the percent of oxygen by mass in this compound?
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a 25.0-gram sample of magnesium oxide contains 10.8 grams of magnesium. what is the percent of oxygen by mass in this compound?

User Ganesh Kaspate
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Answer:56.8%

Explanation:

User Reza Behzadpour
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