What is the density (g/mL) of each of the following samples?
a. A solid object with a mass of 1.65lb and a volume of 170mL.
b. A gem has a mass of 4.50g. When the gem is placed in a graduated cylinder containing 20.00mL of water, the water level rises to 21.45
c. A lightweight head on the driver of a gold club is made of titanium. The volume of a sample of titanium is 114cm^3 and the mass is 514.1g.