1. Understand Avogadro's Number:
* Avogadro's number states that one mole of any substance contains 6.022 x 10²³ particles (atoms, molecules, etc.).
2. Analyze the Chemical Formula:
* BaCl₂ indicates one barium atom (Ba) and two chlorine atoms (Cl) in each molecule.
3. Calculate Total Atoms per Molecule:
* Total atoms per BaCl₂ molecule: 1 (Ba) + 2 (Cl) = 3 atoms
4. Calculate Total Atoms in a Mole:
* Since one mole of BaCl₂ contains 6.022 x 10²³ molecules, and each molecule has 3 atoms:
* Total atoms = (6.022 x 10²³) molecules/mole * 3 atoms/molecule = 1.807 x 10²⁴ atoms
Therefore, there are approximately 1.807 x 10²⁴ atoms in one mole of barium chloride (BaCl₂).
