CH-949
Empirical and molecular formulae
Chemistry · Secondary 3 · Medium · Empirical and molecular formulae
A compound contains 40.0% carbon, 6.67% hydrogen and 53.3% oxygen by mass. What is its empirical formula? (Relative atomic masses: C = 12, H = 1, O = 16.)
- C₂H₄O
- CH₂O
- C₂H₂O
- CHO₂
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