How many moles of Pb is 9.3 x 10^15 atoms of Pb?
Divide by avagradros number.
To determine the number of moles of Pb from given atoms, you need to use Avogadro's number as a conversion factor. Avogadro's number is defined as 6.022 x 10^23 atoms per mole.
First, calculate the conversion factor:
1 mole = 6.022 x 10^23 atoms
Then, use the conversion factor to find the number of moles:
Number of moles = Number of atoms / Avogadro's number
Let's plug in the given values:
Number of atoms of Pb = 9.3 x 10^15
Number of moles = (9.3 x 10^15 atoms) / (6.022 x 10^23 atoms per mole)
Calculating this expression will give you the answer, which represents the number of moles of Pb.