A trash compactor can compress its contents to 0.350 times their original volume. Neglecting the mass of air expelled, by what factor is the density of the rubbish increased?
A cylindrical coffee cup holds 375 g of coffee when filled to a depth of 7.50 cm. Find the radius of the cup. Use a value of 1.00 g/cm3 for the density of coffee.
Find the mass of the air inhaled during a deep breath. Use a value of 2.00 L for the volume of the air and use a value of 1.29 kg/m3 for the density of air.
Find the length of a side of a cube having a mass of 1.0 kg and the density of nuclear matter, kg/m3.
What is the density of 18.0-karat gold that is a mixture of 18 parts gold, 5 parts silver, and 1 part copper? (These values are parts by mass, not volume.) Assume that this is a simple mixture having an average density equal to the weighted densities of its constituents.
Density of gold is 19.3 g/cm3.
Density of silver is 10.5 g/cm3.
Density of copper is 8.92 g/cm3.