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Momentum of oxygen molecules

  1. Aug 7, 2011 #1
    What is the momentum of an oxygen molecule traveling at this speed?

    the speed was 484 m/s

    the molar mass of oxygen is M=.032 kg/mole

    Na= 6.022 x10^23
    I do p=mv

    v=484
    m=M/Na

    The answer should be 2.57x10^-13 but i keep getting 2.57 x10^-23
     
  2. jcsd
  3. Aug 7, 2011 #2

    rock.freak667

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    Homework Helper

    Check your calculations again, your operations are correct.
     
  4. Aug 7, 2011 #3
    I still get 2.57 x 10^-23
     
  5. Aug 7, 2011 #4

    ehild

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    Gold Member

    Your result is correct.

    ehild
     
  6. Aug 7, 2011 #5
    So the solution in the book is wrong, Thank you
     
    Last edited: Aug 7, 2011
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