1. Find the molar mass of phosphorus:
* The molar mass of phosphorus (P) is approximately 30.97 g/mol.
2. Calculate the number of moles of phosphorus:
* Divide the mass of phosphorus by its molar mass:
* moles of P = 5.22 g / 30.97 g/mol = 0.168 mol
3. Use Avogadro's number to find the number of atoms:
* Avogadro's number is 6.022 x 10^23 atoms/mol.
* Multiply the number of moles by Avogadro's number:
* number of atoms = 0.168 mol * 6.022 x 10^23 atoms/mol
* number of atoms ≈ 1.01 x 10^23 atoms
Therefore, there are approximately 1.01 x 10^23 atoms in 5.22 g of phosphorus.
