Here's how to calculate the number of moles of Li atoms in 10.56 grams of Li:

1. Find the molar mass of lithium (Li):

* The molar mass of Li is approximately 6.941 g/mol (you can find this on the periodic table).

2. Use the formula:

* Moles = Mass / Molar Mass

3. Plug in the values:

* Moles = 10.56 g / 6.941 g/mol

* Moles ≈ 1.52 mol

Therefore, there are approximately 1.52 moles of Li atoms in 10.56 grams of Li.