1. Find the molar mass of aluminum:
* The molar mass of aluminum is 26.98 g/mol (you can find this on the periodic table).
2. Calculate the number of moles of aluminum:
* Divide the mass of aluminum by its molar mass:
* Moles of Al = 502 g / 26.98 g/mol = 18.60 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 Al atoms = 18.60 mol * 6.022 x 10^23 atoms/mol
* Number of Al atoms = 1.12 x 10^25 atoms
Therefore, there are approximately 1.12 x 10^25 atoms in 502 g of aluminum.
