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

10) 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 ml –


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