An archeologist finds a 1.62 kg goblet that she believes to be made of pure gold. She determines that the volume of the goblet is 205 mL. How to calculate the density?

Density (d) which is the quotient when mass (m) is divided by volume (v) is usually reported in terms of g/mL.

d = m / v

Substituting the known values,

d = (1.62 kg) x (1000 g / 1 kg) / (205 mL)

The answer would be approximately equal to 7.9 g/mL.