How many atoms of Na would be in 2.53 moles of Na?

15.24 × 10²³ atoms

Explanation:

Given data:

Number of atoms of Na = ?

Number of moles of Na = 2.53 mol

Solution:

1 mole contain 6.022× 10²³ atoms.

2.53 mol × 6.022× 10²³ atoms / 1mol

15.24 × 10²³ atoms

The number 6.022 × 10²³ is called 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.