Understanding the Concepts
* Mole (mol): A unit of measurement that represents a specific quantity of a substance. One mole contains 6.022 x 10^23 particles (atoms, molecules, etc.). This number is known as Avogadro's number.
* SO2 (sulfur dioxide): A molecule composed of one sulfur atom and two oxygen atoms.
Calculation
1. Avogadro's Number: We know that 1 mole of any substance contains 6.022 x 10^23 particles.
2. Multiply by Moles: To find the number of molecules in 2.5 moles of SO2, multiply the number of molecules per mole (Avogadro's number) by the number of moles:
(6.022 x 10^23 molecules/mol) * (2.5 mol) = 1.5055 x 10^24 molecules
Answer: There are approximately 1.5055 x 10^24 molecules present in 2.5 moles of SO2.
