Final answer:
Ethylpropylamine's structural formula is CH3CH2CH2NHCH2CH3, featuring a propyl chain with a secondary amine attached to the middle carbon and an ethyl group attached to the nitrogen atom.
Step-by-step explanation:
To accurately determine the structural formula for ethylpropylamine, one must understand the naming convention for organic compounds, specifically amines. Ethylpropylamine indicates that we have an amine group (NH) attached to an ethyl group (two carbon atoms, -CH2CH3) and a propyl group (three carbon atoms, -CH2CH2CH3). Since the name doesn't specify any additional branching, it's implied that these are both straight chains. Therefore, the structural formula for ethylpropylamine would be a chain of three carbon atoms (a propyl group) with an amine group (-NH) attached to the middle carbon atom (making it a secondary amine), and an ethyl group attached to the nitrogen atom.
The condensed structural formula is CH3CH2CH2NHCH2CH3.