INVESTIGATION 21Introduction:Starting in 1983, some U.S. mints started to change the composition of the one-cent coin. This change was completed in all mints by 1984. The amount of copper in a penny was modified during that period because of a change in the price of copper. The other metal used in pennies is zinc. Since then, copper prices have changed. A copper mining firm hoping to recoup its losses wants us to determine the amount of copper and zinc in coins older than 1983 and newer than 1984 and compare the relative raw material costs for producing the coins today.Experimental:1.Gather all materials 2.Find the concentration of a copper (II) solution3.Make three solutions of known Cu2+(aq) concentrations from Cu(NO3)2 + 3H2)(s) and HNO3(aq). In range of 0.5M concentration. a.In range of 0.5 M concentration. (concentration of 0.1M, 0.3M, 0.5M Cu2+ in 20 mL of nitric acid4.Determine absorbance of three solutions by dissolving each penny in to nitric acid a.