Respuesta :

iuliaelisa15
MgO-magnesium oxide
M₁₂=40 g/mole magnesium oxide
M₁=24 g/mole magnesium
M₂=16 g/mole oxygen
     ↓
in  40 g MgO...........24 g Mg......16 G
in 100 g MgO...........x g Mg
     ↓
x=100·24/40
x=60 % Mg  from  MgO
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Answer:

60%.

Explanation:

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