Question

A cubic piece of metal measures 2.50 cm on each edge. If the metal is nickel, whose density is 8.90 g/cm3, what is the mass of the cube?
Express your answer using three significant figures.

Answer 1

Volume of cube = a³

2.50 * 2.50 * 2.50 =  15.625 cm³

Density = 8.90 g/cm³

mass = ??

m = D * V

m = 8.90 * 15.625

m = 139.0625 g

hope this helps!