Answer:
Here are the possible molecular formulas for the given compositions:
Step-by-step explanation:
1. C4H4O: The molecular formula C4H4O represents the compound furan. Furan is a heterocyclic organic compound consisting of a five-membered ring containing four carbon atoms and one oxygen atom.
2. C₄H₄O: The molecular formula C₄H₄O can represent several compounds. One example is but-2-yne-1,4-diol, which consists of a four-carbon chain with a triple bond between the second and third carbon atoms and hydroxyl groups attached to the first and fourth carbon atoms.
3. C₂H₂O: The molecular formula C₂H₂O represents the compound ketene. Ketene is a linear molecule containing a carbon-carbon double bond and a carbonyl group. It is highly reactive and serves as a versatile building block for various organic compounds.
4. C₈H₈O₂: The molecular formula C₈H₈O₂ can represent several compounds. One example is resorcinol, which is a benzenediol compound. It consists of a benzene ring with two hydroxyl groups attached to adjacent carbon atoms.
5. C8H8O₂: The molecular formula C8H8O₂ can represent several compounds. One example is para-anisic acid, also known as 4-methoxybenzoic acid. It consists of a benzene ring with a methoxy group (–OCH₃) and a carboxylic acid group (–COOH) attached to it.
6. C₁₂H₁₂O₂: The molecular formula C₁₂H₁₂O₂ can represent several compounds. One example is phthalic acid, which is an aromatic compound. It consists of a benzene ring with two carboxylic acid groups (–COOH) attached to adjacent carbon atoms.
These are some possible molecular formulas for the given compositions. It is important to note that there may be other compounds with the same molecular formula, and additional information or context would be needed to determine the specific compound.