Understanding the Concepts
* Mole (mol): A unit of measurement used to express the amount of a substance. One mole contains Avogadro's number of particles (atoms, molecules, etc.).
* Avogadro's Number: 6.022 x 10^23 particles per mole.
Calculation
1. Determine the chemical formula of bromine: Bromine exists as a diatomic molecule (Br₂), meaning two bromine atoms bond together.
2. Use Avogadro's number: Since we have 3.01 moles of bromine, we can multiply this by Avogadro's number to find the number of molecules:
3.01 moles Br₂ * (6.022 x 10^23 molecules Br₂ / 1 mole Br₂) = 1.81 x 10^24 molecules Br₂
Therefore, there are 1.81 x 10^24 molecules of bromine in 3.01 moles.
