Asample of copper with a mass of 63.5g contains 6.02 x10^23 atoms calculate the mass of an average copper atom

1.024 x 10⁻²²g

Explanation:

Data Given:

mass of copper = 63.5 g

no. of atoms of copper = 6.02 x10²³ atoms

mass of of an average copper = ?

Solution:

As 6.02 x10²³ atoms have 63.5 g of mass then what will be the mass of atom.

Apply unity formula

                     63.5 g of copper ≅ 6.02 x10²³ atoms of copper

                     mass of copper atom ≅ 1 atom of copper

Do cross multiplication

                     mass of copper atom = 1 atom x 63.5 g / 6.02 x10²³ atoms

                     mass of copper atom = 1.024 x 10⁻²² g

mass of an average copper atom = 1.024 x 10⁻²² g

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