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: Chemistry with a mass question?

  1. Sep 19, 2010 #1
    1. The problem statement, all variables and given/known data


    2. Relevant equations

    3. The attempt at a solution

    The work is inside the link. I am just wondering how 4.09 grams is obtained? Like how did the person know to take out 4.09 grams?
  2. jcsd
  3. Sep 19, 2010 #2


    User Avatar
    Homework Helper
    Gold Member

    Very likely in parts a or b which we can't see.
  4. Sep 19, 2010 #3


    User Avatar

    Staff: Mentor

    If you are too lazy to copy questions, I am too lazy to think about the answer.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook