1. Find the molar mass of nickel:
* The molar mass of nickel is 58.6934 g/mol (you can find this on the periodic table).
2. Calculate the number of moles of nickel:
* Moles = mass / molar mass
* Moles = 26.4 g / 58.6934 g/mol
* Moles ≈ 0.449 mol
3. Use Avogadro's number to find the number of atoms:
* Avogadro's number is 6.022 x 10²³ atoms/mol
* Number of atoms = moles * Avogadro's number
* Number of atoms ≈ 0.449 mol * 6.022 x 10²³ atoms/mol
* Number of atoms ≈ 2.70 x 10²³ atoms
Therefore, there are approximately 2.70 x 10²³ atoms in 26.4 g of nickel.
