conveting moles to lead

Question

Suppose you have 3.2 moles of lead,Pb,atoms.

a] how many lead atoms do you have?

b] what is the mass in grams of this mush lead?

Answer 1

a) Since we have the moles of lead, we can convert them to the number of atoms using Avogadro's number:

3.2 mol Pb x (6.022 x 10²³ Pb atoms/1 mol Pb) =

1.93 x 10²⁴ Pb atoms

b) To get the mass in grams, we simply multiply the moles of lead we have by its atomic weight:

3.2 mol Pb x (207.2 g Pb/1 mol Pb) =

663.04 g Pb