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Balanceing equations PLEASE HELP

  1. Mar 15, 2007 #1
    Balanceing equations PLEASE HELP!!

    I have most of the questions complete I just need help with the last one...

    1. What was the initial temperature in the jar?
    88 degrees F

    2. What was the temperature after the reaction?
    98 degrees F

    3. What was the change in temperature?
    10 degrees F

    4. Based on information from Part I and from observations, was this reaction Exothermic or Endothermic?
    Exothermic

    5. Are chemical bonds forming or breaking?
    Both one bond is brakeing to form another

    6. In this experiment, the acidic vinegar dissolved a protective coating off the steel wool, allowing the oxidation of the steel to begin. This process is called rusting. In this reaction, iron(III) is combined with oxygen gas to form iron oxide.

    Write the balanced chemical reaction for the rusting of iron

    This is the one i need help with. I have no idea what i'm doing when it comes to balanceing equations i'm guessing..it would be something like 4Fe + 3O2 = 2Fe2O3 ???PLEASE SOMEONE TELL ME IF I"M RIGHT!
     
    Last edited: Mar 15, 2007
  2. jcsd
  3. Mar 15, 2007 #2

    cristo

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    Staff Emeritus
    Science Advisor

    Yes it is correct.
     
  4. Mar 15, 2007 #3
    Thank you!!
     
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