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A compound is 40.0% C, 6.7% H and 53.3% O by mass. What is its empirical formula?
ACHO
BCH2O
CC2HO
DCH2O2
Answer & Solution
Correct answer: B. CH2O
In 100 g the moles are C 3.33, H 6.65 and O 3.33, and dividing by 3.33 gives the ratio 1 : 2 : 1.
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