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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