1. Find the molar mass of iron (Fe):
* The molar mass of iron is 55.845 g/mol. This means that one mole of iron weighs 55.845 grams.
2. Calculate the number of moles of iron:
* Divide the given mass of iron by its molar mass:
* Moles of Fe = (26.1 g) / (55.845 g/mol) = 0.467 mol
3. Use Avogadro's number to find the number of atoms:
* Avogadro's number states that there are 6.022 x 10^23 atoms in one mole of any substance.
* Multiply the number of moles of iron by Avogadro's number:
* Number of Fe atoms = (0.467 mol) * (6.022 x 10^23 atoms/mol) = 2.81 x 10^23 atoms
Therefore, there are approximately 2.81 x 10^23 atoms in 26.1 g of iron.
