Endings (suffixes) in the naming process can tell us a lot about a chemical. For example, a compound named "Ethyl propanoate" would be categorized as a (n) :

Oxyanion

Explanation:

Nomenclature is a set of rules designed to name chemical compounds, in this rules the use of suffix is common to determine the functional group of a molecule, in the case of "Ethyl propanoate" the - ate suffix is used to design an oxyanion like sulfate SO42 - or nitrate NO3-.

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