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/mole
2. Calculation
To find the number of Ar atoms, we can use the following equation:
* Number of atoms = (moles of Ar) * (Avogadro's number)
* Number of atoms = (0.44 moles) * (6.022 x 10²³ atoms/mole)
* Number of atoms ≈ 2.65 x 10²³ atoms
Therefore, there are approximately 2.65 x 10²³ atoms of Ar in 0.44 moles of Ar.
