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Problem: A cylindrical copper wire is used for the fences around a house. The copper wire has a diameter of 0.0750 in. How many copper atoms are found in 5.160 cm piece? The density of copper is 8.96 g/cm3. (V = π • r2 • h)a) 2.01 x 1022 Cu atomsb) 6.36 x 1021 Cu atomsc) 9.91 x 1021 Cu atomsd) 1.25 x 1022 Cu atoms

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Problem Details

A cylindrical copper wire is used for the fences around a house. The copper wire has a diameter of 0.0750 in. How many copper atoms are found in 5.160 cm piece? The density of copper is 8.96 g/cm3. (V = π • r2 • h)

a) 2.01 x 1022 Cu atoms

b) 6.36 x 1021 Cu atoms

c) 9.91 x 1021 Cu atoms

d) 1.25 x 1022 Cu atoms

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Based on our data, we think this problem is relevant for Professor Prabhakaran's class at Norfolk State University.