The task of physical chemistry 23

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When determining the enthalpy of combustion of naphthalene (С10Н8) in oxygen in calorimetric bomb was found that the combustion 1,1226 g of naphthalene, the temperature of the calorimetric system increased by 4,0630° C. the Average temperature experience equal to 18° C. the temperature Increase is corrected taking into account the enthalpy of combustion, ignition delay and soot, carbon monoxide and nitric acid. The heat capacity of the calorimetric system 2660 cal; molecular weight naphthalene 128,11 g-mol-´. Determine the enthalpy of combustion of 1 mole of naphthalene at 18° C

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