What is the Density of a Penny?

The penny is made up of zinc and copper. Before 1982 its density is 3.11 grams and after 1982 its density is 2.50 grams. In 1982 a great change took place when pennies were made up of 95% copper and 5% zinc and after 1982 was changed to be 97.6 zinc and 2.4 copper.