A metal sphere has a mass of 39.0g and a volume of 10.0cm is the sphere made of pure aluminum

Note that the density of pure aluminum is 2.7 g/cm³ (from tables).

Given:

m = 39.0 g, the mass of the metal

V = 10.0 cm³, the density of the metal

By definition, the density of the metal is

density = mass/volume

= (39.0 g) / (10.0 cm³)

= 3.9 g/cm³

Answer:

The calculated density is not equal to 2.7 g/cm³, therefore the metal sphere is not made of pure aluminum.