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abmuk
Jul 23, 2007, 10:02 AM
Greetings,

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

Thanks!

Capuchin
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.