Constantan is a copper-nickel alloy containing 55.0 % copper and 45.0 % nickel. The density of the alloy is 8.885 g/cm³. A sphere made from constantan has a volume of 58.5 cm³. Calculate the number of copper and nickel atoms in the sphere.

• A. 2.98×10²³ Cu atoms and 2.40×10²⁴ Ni atoms
• B. 2.71×10²⁴ Cu atoms and 2.40×10²⁴ Ni atoms
• C. 2.71×10²⁴ Cu atoms and 1.75×10²³ Ni atoms
• D. 2.71×10²³ Cu atoms and 2.40×10²³ Ni atoms

Answer: (B)