Final answer:
A typical structure for C5H12O is n-pentanol or 1-pentanol, a primary alcohol with an OH group on the end carbon of a 5-carbon straight chain.
Step-by-step explanation:
The question asks to propose the structure for a molecule with the formula C5H12O. Given the molecular formula, there are several possibilities for the structure of this molecule, which can include an alcohol or ether as functional groups. A common structure for this molecular formula could be pentanol, a straight-chain alcohol where a hydroxyl group (OH) is attached to one of the carbon atoms in the 5-carbon chain. For C5H12O, a possible structure is CH3CH2CH2CH2CH2OH, which is known as n-pentanol or 1-pentanol. This structure involves an OH group on the end carbon of the chain, making it a primary alcohol.