How many atoms are in 0.433 moles of Cu?

2.61 × 10²³ atoms of Cu.

Explanation:

Given data:

Number of moles of Cu = 0.433 mol

Number of atoms = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

1 mole = 6.022 × 10²³ atoms of Cu

0.433 mol × 6.022 × 10²³ atoms of Cu  / 1mol

2.61 × 10²³ atoms of Cu

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