Answer to Question #116992 in General Chemistry for james urio

General Chemistry

Question #116992

find the mass of magnesium oxide that can be formed by burning completely 30g of magnesium ribbon

Expert's answer

2Mg+O₂ => 2MgO

n(Mg)=m(Mg)/Mr(Mg)=30/24=1,25 moll

n(Mg)=n(MgO)

=>m(MgO)=n(MgO)*Mr(MgO)=1,25*40=50g

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