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Moles of excess

  1. Oct 21, 2009 #1
    1. The problem statement, all variables and given/known data

    3. The attempt at a solution

    I got an answer, but I don't want to sway anyone so I won't say what it was. I just want to check my answer with someone else's o:) o:)
  2. jcsd
  3. Oct 21, 2009 #2
    The limiting reactant should be the 8 moles of O2.

    The way I learned to find out which number of moles is limiting is to divide each number of moles of reactant by the coefficient of the reactant in the balanced equation. The one with the smallest number is the limiting reactant.
  4. Oct 21, 2009 #3
    i know, right?? that's what I thought but the answer key says the excess is supposed to be O2.
    that's why I posted this - i'm pretty sure it's wrong but I needed a second opinion
  5. Oct 22, 2009 #4


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    Staff: Mentor

    You may safely give your answers, we are not that easy to confuse. But we are easily doubting someone who says so really did anything - way too often lazy students try to play that trick.

  6. Oct 27, 2009 #5
    I'm not a lazy student!!! How dare you, good sir.
  7. Oct 27, 2009 #6
    You sir, are a douche.

    lol anyways it's fine, Bohrok's answer was enough of a reassurance.

    You should trust students on here a little more. Most of the lazy ones don't even bother to look for help. I really, really hate being called lazy, it's a thing.
  8. Oct 27, 2009 #7


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    Staff: Mentor

    I have not said YOU are the lazy student. I wrote that we often see people stating "I did it" when they have not. We see it so often we don't believe even when it is a just truth.

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