Final answer:
The compound with the molecular formula C4H9Br, containing carbon, hydrogen, and bromine atoms, is classified as an organic compound due to its carbon and hydrogen content.
Step-by-step explanation:
The compound C4H9Br can be identified as an organic compound. To recognize whether a compound is organic or inorganic, we look at its composition. Organic compounds predominantly contain carbon and hydrogen atoms. In the molecular formula C4H9Br, we can see that there are four carbon atoms (C) and nine hydrogen atoms (H), along with a bromine atom (Br). Since the compound is composed mostly of carbon and hydrogen, it is classified as organic.