The density of an unknown substance is 6.8g/cm³. It has a mass of 47g. What is its volume?

If the density of a mineral is 2.5g/cm³, would it sink or float?

If the density of a mineral is 0.45g/cm³, would it sink or float?

An unknown substance from Planet X has a density of 10g/mL. It occupies a volume of 80mL. What is the mass of this unknown substance?


A rock occupies a volume of 20cm³ and has a mass of 54g. What is the density of the rock?

28.5g of iron shot is added to a graduated cylinder containing 45.5mL of water. The water level rises to 49.1mL. Calculate the density of iron.


A graduated cylinder has 22mL of water poured into it. An irregularly shaped rock is dropped into the cylinder and the volume rock and the water in the cylinder now reads 30mL. The mass of the rock dropped into the cylinder is 24g.
What is the density of the rock?

What is the mass of ethyl alcohol that fills a 200 ml container? The density of ethyl alcohol is 0.789g/mL.