CH-2025
Empirical and molecular formulae
Chemistry · Secondary 4 · Medium · Empirical and molecular formulae
A sample of an oxide of iron contains 70.0% iron and 30.0% oxygen by mass.
What is the empirical formula of this oxide? (Ar: Fe = 56, O = 16)
What is the empirical formula of this oxide? (Ar: Fe = 56, O = 16)
- FeO
- Fe₂O₃
- Fe₃O₄
- Fe₂O
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