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14-11-2020
Chemistry

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Magnesium combines with oxygen to form magnesium oxide. If 15.05 g of magnesium reacts completely with 7.57 g of oxygen,
what is the percent by mass of oxygen in magnesium oxide?

Respuesta :

nunuyilay404 nunuyilay404

27-11-2020

Answer:

15.05+7.75÷21×100=

Explanation:

total mass÷atomic nass×100

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