The weight of one atom of uranium is 238amu. Its actual weight is ......g.

Answer 1

I showed you how to do that when you first posted. All you need to do is punch those numbers into your calculator. I'll be glad to explain anything you don't understand but re-posting the question doesn't do any good and wastes our time.

Answer 2

3.95*10(-22)

Answer 3

397.46×10 E-24