Here's how to calculate the number of atoms in 6.755 mol of lead (Pb):

1. Avogadro's Number:

* Avogadro's number states that there are 6.022 x 10²³ atoms in one mole of any substance.

2. Calculation:

* Multiply the number of moles by Avogadro's number:

(6.755 mol Pb) * (6.022 x 10²³ atoms/mol) = 4.071 x 10²⁴ atoms of Pb

Therefore, there are approximately 4.071 x 10²⁴ atoms in 6.755 mol of lead.