A common experiment to determine the relative reactivity of metallic elements is to place a pure sample of one metal into an aqueous solution of a compound of another metallic element. If the pure metal you are adding is more reactive than the metallic element in the compound, then the pure metal will replace the metallic element in the compound. For example, if you place a piece of pure zinc metal into a solution of copper(II) nitrate, the zinc will slowly dissolve to produce zinc nitrate solution, and the copper(II) ion of the copper(II) nitrate will be converted to metallic copper. Write the unbalanced equation for this process. (Include states-of-matter under the given conditions in the answer)