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18 December, 15:54

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?

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  1. 18 December, 16:08
    0
    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
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