Joe Smith, the chemical engineer from Acme Chemical Company, wanted to determine the final volume in a large glass cylinder is he dropped a 12.52 pound ingot of lead whose density was 11.3 g/cm^3 into the cylinder which already contained 2500. mL of water. What is the final volume of water in the cylinder.
volume Pb = mass/density
You know mass in pounds, convert that to grams. There are 454.6 g Pb in one pound.
You know density.
Solve for volume of Pb.
The volume of the Pb pushes out that much volume of the water so add 2500 mL + volume Pb in mL to find final volume of water.