How many moles of magnesium are 5.231 X 1023 atoms of magnesium?

0.87 moles

Explanation:

Given dа ta:

Number of moles of magnesium = ?

Number of atoms of magnesium = 5.23 * 10²³ 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,

one mole = 6.022 * 10²³ atoms

5.23 * 10²³ atoms * 1 mol / 6.022 * 10²³ atoms

0.87 moles