1. Avogadro's Number:
* Avogadro's number tells us the number of atoms in one mole of any element. It's approximately 6.022 x 10^23 atoms/mol.
2. Molar Mass:
* The molar mass of lead (Pb) is 207.2 g/mol. This means one mole of lead has a mass of 207.2 grams.
3. Calculation:
* Step 1: Find the number of moles of lead:
(8.90 x 10^23 atoms) / (6.022 x 10^23 atoms/mol) = 1.48 mol
* Step 2: Multiply the number of moles by the molar mass to find the mass:
(1.48 mol) * (207.2 g/mol) = 307 g
Therefore, the mass of 8.90 x 10^23 lead atoms is approximately 307 grams.
