Answer:
nitrate and sodium are spectator ions .The reactions that form an aqueous solution are often a spectator ions.
Answer:
I believe that it would be copper because copper is all of those things.
Explanation:
I think c is used in electric power plants.
A single replacement reaction, sometimes called a single displacement reaction, is a reaction in which one element is substituted for another element in a compound. The starting materials are always pure elements, such as a pure zinc metal or hydrogen gas, plus an aqueous compound.
