Question 3.(a) through (c).

3. Calculate the mass of each of the following: ( 3 points) Adopted from Chang and Overby, Chemistry, 13e, McGraw-Hill (a) a sphere of gold with a radius of 10.0cm [the volume of a sphere with a radius r is V (34)r3; the density of gold =19.3cm3g] (b) a cube of platinum of edge length 0.040mm (the density of platinum =21.4cm3g ), (c) 50.0mL of ethanol (the density of ethanol =0.798mLg )