NSSCAS Chemistry (8224) Practice Questions - Namibia Senior Secondary Certificate Advanced Subsidiary Level Chemistry (Syllabus 8224) Exam

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A compound contains 40.0% C, 6.7% H and 53.3% O by mass. What is its empirical formula? (Ar: C = 12.0, H = 1.0, O = 16.0)

CHO CH₂O C₂H₄O C₂H₂O

Correct Answer:

CH₂O

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