Answered

Magnesium oxide decomposes into magnesium and oxygen. If 4.03 g of magnesium oxide decomposes to form 2.43 g of magnesium, what mass of oxygen gas is also released in the reaction

Answer :

conservation of mass

total initial mass =4.03 gran
mass of Mg = 2.43 gram

mass of Oxygen = 4.03-2.43 =1.60 gram

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