Salt Water Lab Report

Three prepared solutions of water, saltwater, and one unknown were measure out to 5mL with the use of a pipet. Their individual weights were determined by using an electric pan balance so that their densities could be calculated. Also, the densities of pennies and their zinc and copper compositions were also determined. A graduated cylinder was used to calculate the volume value of thirty pennies, and an electric pan balance was used to determine their mass. The densities of the solutions were found to be as followed: water was .993 g/mL at 21 degrees Celsius with a .o61% percent error, saltwater was 1.01 g/mL, and the unknown was .689 g/mL. The average density for a single penny was determined to be 7.088 g/mL. Based on these results it was