1. Not finding help here? Sign up for a free 30min 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!

Chemistry problems Moles

  1. Apr 9, 2006 #1

    Aya

    User Avatar

    Hi, can some one pleas tell me how to do these questions? Thanks.

    How many atoms of C are in a mixture containing 0.237 mol of CO2 and 2.38 mol of CaC2?


    calclate the following
    the mass (g) of one atom of xenon
    the mass (g) of one mole of xenon atoms
    the number of atomic mass units in one gram
     
  2. jcsd
  3. Apr 9, 2006 #2

    Astronuc

    User Avatar

    Staff: Mentor

    One mole of a substance is mass (in grams) of the material which contains 6.022 E23 atoms or molecules of that substance, where the number of grams is given by the atomic or molecular mass.

    See - http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/idegas.html#c4

    Thanks ksinclair13 - it occurred to me this afternoon that I had written E22 instead of E23.
     
    Last edited: Apr 10, 2006
  4. Apr 10, 2006 #3
    Avogadro's number is 6.022 x 1023.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Chemistry problems Moles
  1. Chemistry: Moles (Replies: 4)

Loading...