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31 Oct 2021

Given information

The number of atoms of a pure copper sphere is atoms.

The volume of the sphere is  .

The density of copper is  .

Step-by-step explanation

Step 1.

we know that the molar mass of copper is .

The Avogadro number is .  

Let the radius of the pure copper sphere is

The number of moles of a pure copper sphere is,

   

Substituting all the values,

    

   

So, the number of moles of the pure copper sphere is

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