What is the molecular formula of butan-2-one?

What is the molecular formula of butan-2-one?

Step 1: Identify the name of the compound, which is butan-2-one.
Step 2: Break down the name 'butan-2-one'. 'Butan' indicates that the compound has 4 carbon atoms (C4).
Step 3: The '2' in 'butan-2-one' indicates the position of the ketone group (C=O) on the second carbon.
Step 4: Since it is a ketone, there is one oxygen atom (O) in the molecular formula.
Step 5: Count the hydrogen atoms. For butan-2-one, there are 8 hydrogen atoms (H8) to satisfy the carbon and oxygen bonding.
Step 6: Combine the counts of carbon, hydrogen, and oxygen to form the molecular formula: C4H8O.

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