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 10^23 particles/mol.
2. Molecules vs. Atoms:
* H2 represents a molecule of hydrogen gas. Each molecule contains two hydrogen atoms.
Calculation:
1. Atoms per molecule: There are 2 hydrogen atoms in one H2 molecule.
2. Atoms per mole: Multiply Avogadro's number by the number of atoms per molecule:
(6.022 x 10^23 molecules/mol) * (2 atoms/molecule) = 1.204 x 10^24 atoms
Answer: There are 1.204 x 10^24 atoms in 1.000 mol of H2.
