Chapter 1, Problem 75AP

Calculate the mass of each of the following: (a) a sphere of gold with a radius of 10.0 cm (volume of a sphere with a radius r is $V=\raisebox{1ex}{$4$}\!\left/ \!\raisebox{-1ex}{$3$}\right.\pi r^3$ density of gold = $\text{19}{\text{.3 g/cm}}^{\text{3}}\text{),}$ (b) a cube of platinum of edge length 0.040 mm (density = ${\text{314 g/cm}}^{\text{3}}\text{),}$ $\left(\text{c}\right)\text{ 50}\text{.0 mL of ethanol }\left(\text{density = 0}\text{.798 g/mL}\right)$.