1) A standard 1 kilogram weight is a cylinder 40.0 mm in height and 51.0 mm in diameter. What is the density of the material?
2) The mass of a copper atom is 2.75 10-25 kg, and the density of copper is 8 920 kg/m3 .
(a) Determine the number of atoms in 1 cm3 of copper.
(b) Visualize the one cubic centimeter as formed by stacking up identical cubes, with one copper atom at the center of each. Determine the volume of each cube.
(c) Find the edge dimension of each cube, which represents an estimate for the spacing between atoms.
3) A solid piece of lead has a mass of 35.64 g and a volume of 3.13 cm3. From these data, calculate the density of lead in SI units (kilograms per cubic meter).