Uranium has an atomic weight of 238.03 g/mol.
We have 1.32x10^20 atoms of uranium.
We must convert this to moles by dividing Avogadro's number 6.022x10^23 atoms/mol.
(1.32x10^20atoms)/(6.022x10^23atoms/mol)
2.19x10^-4moles of Uranium
Now multiply this by the atomic weight of Uranium.
2.19x10^-4mol*238.03g/mol
Grams of Uranium = .0522g