Nitroglycerin decomposes to form carbon dioxide, water vapor, nitrogen, and oxygen. Suppose 2.27 grams of nitroglycerin (227g/mol)

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Nitroglycerin decomposes to form carbon dioxide, water vapor, nitrogen, and oxygen. Suppose 2.27 grams of nitroglycerin (227g/mol) decomposes at constant volume and the energy released is completely transferred to 1.50 kg water {c=4.18 J/g C). The temperature increases by 2.547 C. calculate delta H for the reaction below

4C3H5N3O9 ----- 12CO2+ 10H2O +6N2+O2