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Density AP Practice Zumdahl 7th Edition

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Sample One A material will float on the surface of a liquid if the material has a density less than that of the liquid. Given that the density of water is approximately 1.0 g/mL, will a block of material having a volume of 1.2x104 in3 and weighing 350 lb float or sink when placed in a reservoir of water? 2

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Sample Two For a material to float on the surface of water, the material must have a density less than that of water (1.0 g/mL) and must not react with the water or dissolve in it. A spherical ball has a radius of cm and weighs 2.0 g. Will this ball float or sink when placed in water? (Note: volume of a sphere = ¾πr3) 3

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Sample Three A star is estimated to have a mass of 2x1036 kg. Assuming it to be a sphere of average radius 7x105 km, calculate the average density of the star in units of grams per cubic centimeter. (Note: volume of a sphere = ¾πr3) 3

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Sample Four A rectangular block has dimensions 2.9cm x 3.5cm x 10.0cm. The mass of the block is 615.0g. What are the volume and density of the block? 1

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Sample Five A sample containing 33.45g of metal pellets is poured into a graduated cylinder initially containing 12.7 mL of water, causing the water level to rise to 21.6 mL. Calculate the density of the metal. 1

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Sample Six The density of pure silver is 10.5 g/cm3 at 20˚C. If 5.25g of pure silver pellets are added to a graduated cylinder containing 11.2 mL of water, to what volume level will the water in the cylinder rise? 2

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Challenge The density of osmium (the densest metal) is g/cm3. If a 1.00kg rectangular block of osmium has two dimensions of 4.00cm and 4.00cm, calculate the third dimension of the block. 4

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Density Section 2.1 Measurement of how packed or crowed object is Ratio of mass to volume.

Density Section 2.1 Measurement of how packed or crowed object is Ratio of mass to volume.

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