Thread: Help with Energy problem

It's because the atomic mass is not expressed in kilograms. You have to translate it... Think about it : Can an atom have a mass of 39 kilograms!!!!!?

Originally Posted by arbolis

It's because the atomic mass is not expressed in kilograms. You have to translate it... Think about it : Can an atom have a mass of 39 kilograms!!!!!?

I just typed the problem in wrong. See corrected



6.022 x 10^23 ???

You still have the same problem with the mass. An atom is much, much less heavy than .
Take a look at Atomic mass - Wikipedia, the free encyclopedia, especially at the
"Conversion factor between atomic mass units and grams"

paragraph.
EDIT :

6.022 x 10^23 ???

Yes, you have to use the Avogadro's number.