1. Find the molar mass of lithium:
* The molar mass of lithium (Li) is approximately 6.941 g/mol. This means that one mole of lithium weighs 6.941 grams.
2. Calculate the number of moles of lithium:
* Divide the given mass by the molar mass:
* Moles of Li = 34 g / 6.941 g/mol ≈ 4.89 mol
3. Use Avogadro's number to find the number of atoms:
* Avogadro's number is 6.022 x 10^23 atoms/mol. This means that there are 6.022 x 10^23 atoms in one mole of any substance.
* Multiply the number of moles by Avogadro's number:
* Number of Li atoms = 4.89 mol * 6.022 x 10^23 atoms/mol ≈ 2.95 x 10^24 atoms
Therefore, there are approximately 2.95 x 10^24 atoms in 34 grams of lithium.
