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Homework Help: Easy Chemistry Problem Please Help

  1. Aug 27, 2010 #1
    1. The problem statement, all variables and given/known data

    2 C8 H18 + 50 O2 --> 16 C O2 + 18 H2 O

    How many moles of oxygen are required to burn 5.00 moles of octane?

    I got 125?

    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Aug 28, 2010 #2

    Borek

    User Avatar

    Staff: Mentor

    Check if the oxygen is balanced.

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  4. Aug 29, 2010 #3
  5. Aug 29, 2010 #4

    Borek

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    Staff: Mentor

    Is it?

    How many atoms on the left? How many atoms on the right?

    --
    methods
     
  6. Aug 29, 2010 #5
    Oh sorry my mistake, borek
    thats why i'm getting bad results for chemistry, eh? :S
     
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