Calculate the Number of Moles of Cl Atoms in Magnesium Chloride

Calculation:

Given: Number of formula units of magnesium chloride = 1.81×10^24

We can use Avogadro's number to convert the number of atoms or molecules into moles.

1.81×10^24 formula units MgCl2 * (1 mol / 6.022x10^23 formula units) * (2 mol Cl / 1 mol MgCl2) = 6.01 mol Cl atoms

Answer:

The number of moles of Chlorine atoms in 1.81×10^24 formula units of magnesium chloride is 6 moles.

Explanation:

A formula unit is the lowest whole number ratio of ions in an ionic compound.

By multiplying the number of moles by Avogadro's number (6.022×10^23), we can calculate the number of formula units.

1 mole of magnesium chloride contains 1 mole of magnesium atoms and 2 moles of chlorine atoms.

Therefore, in 1.81×10^24 formula units of magnesium chloride, there are 6 moles of chlorine atoms.