CH-1994
Empirical and molecular formulae
Chemistry · Secondary 4 · Medium · Empirical and molecular formulae
A 12.0 g sample of an oxide of magnesium contains 7.20 g of magnesium and 4.80 g of oxygen. What is the empirical formula of the oxide? (Ar: Mg = 24, O = 16)
- MgO
- MgO₂
- Mg₂O
- Mg₂O₃
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