compute the density in g/cm of a piece of metal that has a mass of 0.520kg and a volume of 75cm
mass = volume x density
rearrange to
density = mass/volume.
mass = 0.520 kg = 520 grams.
volume of 75 cm isn't correct. Volume is in cubic units. You may mean 75 cm^3 or 75 cc. If so, then density= (520/75) g/cc.