Final answer:
To find the density of the jewelry, subtract the water's initial volume from the final volume and divide the jewelry's mass by this volume. The density calculation shows a density of 10.52 g/mL, suggesting that the jewelry could be made of metal or an alloy.
Step-by-step explanation:
To determine the density of a liquid, you can use the relationship density = mass/volume. In the case of the large piece of jewelry, we find its density by subtracting the initial volume of water in the graduated cylinder from the volume after the jewelry has been submerged, which gives us the volume of the jewelry. Then we divide the mass of the jewelry by its volume.
(a) Volume of jewelry = Final volume - Initial volume of water = 61.2 mL - 48.6 mL = 12.6 mL
Density of jewelry = Mass of jewelry / Volume of jewelry = 132.6 g / 12.6 mL = 10.52 g/mL.
(b) Given this density, the jewelry is likely made of a metal or an alloy. By comparing the density calculated to known densities of metals and alloys, we can estimate which substance the jewelry is made from.