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What is the density of a piece of metal that has a volume of 10cm3 and a mass of 500g?
Volume = mass/volume = 500g/10cm3 = 50g/cm3
A piece of metal with a mass of 163 g is placed in a 50 mL graduated cylinder The water level rises from 20 mL to 36 mL What is the density of the metal?
The volume of the piece of metal is measured by the difference in the volume of water in the graduated cylinder before and after the piece of metal is placed in the cylinder. This is stated to be 36 - 20 = 16 mL. Density is defined to be mass per unit volume. Therefore, for this piece of metal the density is 163/16 = 10 g/mL. (Only two significant digits are justified, because the is the number of significant digits in the limiting datum 16.)
What is the density of 12.0 cm3 piece of metal with a mass of 5 grams?
Density = mass/volume = 5/12 = 0.4166... gms per cm3. This figure is well below the density of lithium, the least dense of metallic elements.
What is the density of a piece of wood that has a mass of 25.0 and a volume of 28.7?
Density = Mass/Volume = 25.0/28.7 = 0.871 units of mass per units of volume.
What is the density of a 49.8g piece of pumice that has a volume of 83cm3?
density = mass/volume 49.8/83 =0.6 g per cm3
