Acube of copper was found to have a mass of 645 g. what are the dimensions of the cube? (the density of copper is 8.96 g/cm3.) answer in cm using 2 decimal places. note that this question is not asking you to answer with volume, but you will need to find volume first. 8.94

Mass of a cube of copper = 645 g

Density of copper = 8.96 g/cm3

Density of a substance is the mass of that substance per unit volume. i.e.

Density = Mass/Volume

Volume of the copper cube = Mass * Density

                                               = 645 g * 8.96 g/cm3 = 5779.2 cm3

Now, if the length of the side of a cube is 'a' cm,  then its volume (V) is :

= = 17.89 cm

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b