A graduated cylinder has a mass of 50 g when empty. When 30 mL of water is added, the graduated

cylinder has a mass of 120 g. If a rock is added to the graduated cylinder, the water level rises to 75

mL and the total mass is now 250 g. What is the density of the rock?

The answer to your question is: 10.67 g/ml

Explanation:

graduated cylinder mass empty = 50 g

+ 30 ml of water = 120 g

+ a rock the level rises 75 ml total mass = 250 gr

density of metal = ?

Formula

density = mass / volume

Process

mass of water = 120 - 50 = 70 g

volume of rock = 75 ml

mass of the rock = 250 - 50 - 120 = 80 g

density of rock = 80 / 75 = 10.67 g/ml