Final answer:
The molecular formula C₂H4O₂ represents the correct formula for acetic acid, which is commonly known as vinegar. Acetic acid is used in cooking and food preservation and has a strong, pungent smell.
Step-by-step explanation:
When you try to create an acetic acid molecule using the molecular formula C₂H4O₂, you are actually representing the correct molecular formula for acetic acid. Acetic acid is commonly known as vinegar and is used in cooking and food preservation. It is a clear liquid with a strong, pungent smell. The molecular formula C₂H4O₂ tells us that there are 2 carbon atoms (C), 4 hydrogen atoms (H), and 2 oxygen atoms (O) in the acetic acid molecule.