text: find the density? a 10cm^3 block of rock of silver has a mass of 10.7 grams. what's the density?  explain density is the mass/volume  10.7/10cm^3 =1.07 g/cm^3  that seams to be very light (water has a density of 1.0 g/cm^3). check your information again. it would make more sense if the block was 1 cm^3. so your density would be 10.7g/cm^3. (the denisty of pure silver is 10.5 g/cm^3)