1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Moles in physics

  1. Jun 14, 2012 #1
    1. The problem statement, all variables and given/known data
    What would be the mass of one hundred million million (100 000 000 000 000 = 1014) atoms of Uranium 238 (atomic mass is 238)?


    2. Relevant equations



    3. 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
     
  2. jcsd
  3. Jun 14, 2012 #2
    Hi ehabmozart!! :smile:

    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:
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook