3. In the apparatus below, the seawater is an example of a(n) ——

In the apparatus of the electrochemical cell, the seawater is an example of an electrolyte.
An electrolyte is a component of the electrochemical cell that is a solution of solvent or water that contains dissolved ions.
The salts of sodium, chloride, and potassium are the main components of seawater and a great electrolyte.
Therefore seawater is an example of an electrolyte.
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