Mass of 100 trillion uranium-238 atoms

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Homework Statement


What would be the mass of one hundred million million (100 000 000 000 000 = 1014) atoms of Uranium 238 (atomic mass is 238)?


Homework Equations





The Attempt at a Solution


I tried finding the mass of each particle by diving the avogadro constant by 238.. The answer multiplies by 10^14.. However, this gives the wrong answer
 
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Hi ehabmozart! :smile:

I tried finding the mass of each particle by diving the avogadro constant by 238..

Noo!

The mass of one mole(Avogadro number of molecules) is 238 grams , what is the mass of one molecule??

In other words, the mass of 5 identical boxes is 10kg, what's the mass of each box? :wink: