volume copper = final volume water - initial volume water

volume copper = 137 mL - 105 mL**volume copper = 32 mL**

You are asked to determine the mass of a piece of copper using its reported density, 8.96 g/mL, and a 150-mL graduated cylinder. First, you add 105 mL of water to the graduated cylinder; then you place the piece of copper in the cylinder and record a volume of 137 mL. What is the *mass* of the copper reported with the correct number of significant figures?

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