1. Avogadro's Number
* Avogadro's number tells us the number of particles (atoms, molecules, etc.) in one mole of a substance. It's approximately 6.022 x 10²³ particles/mol.
2. Calculation
* To find the number of SO₂ molecules, multiply the number of moles by Avogadro's number:
Number of SO₂ molecules = (1.80 mol SO₂) * (6.022 x 10²³ molecules/mol)
Number of SO₂ molecules ≈ 1.08 x 10²⁴ molecules
Therefore, there are approximately 1.08 x 10²⁴ sulfur dioxide molecules in 1.80 mol of sulfur dioxide.
