Ihave no idea how to do this
uranium has an atomic weight of 238 amu.
weight of one mole of uranium = /mol
weight of one mole of oxygen = 16.00 g
the molar mass or molecular weight for u205 is /mol.

It is known that amu is equal to the molar mass of 1 mole of substance. Therefore,

Weight of one mole of uranium = 238 g/mol

The molar mass or molecular weight for U205 is 556 g/mol.
(238 x 2) + (16 x 5) = 556 g/mol