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    abmuk's Avatar
    abmuk Posts: 1, Reputation: 1
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    #1

    Jul 23, 2007, 10:02 AM
    Endothermic vs. Exothermic
    Greetings,

    Is the decomposition of gaseous dinitrogen pentoxide to gaseous nitrogen dioxide and oxygen exothermic or endothermic?

    Thanks!
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Jul 23, 2007, 10:14 AM
    Do you have energy values for the bonds? How about a balanced chemical equation? You need to calculate the energy it takes to break the bonds, and the energy released by forming the new bonds.
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