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Homework Help for Chemistry
Chemistry is the science that deals with the structure, properties and transformations of the bodies based on their composition.
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The equation for the combustion of gaseous methanol is
(a) Using the bond dissociation enthalpies in Table 8.8, estimate the enthalpy change for this reaction. What is the enthalpy of combustion of one mole of gaseous methanol?
(b) Compare your answer in part (a) with the value of ΔrH° calculated using enthalpies of formation data.
Acetic acid, HC2H3O2, is responsible for the sour taste of vinegar. Combustion of acetic acid gives off 14.52 kJ/g of heat. When 15.00 g of acetic acid is burned in a bomb calorimeter (heat capacity = 2.166 kJ/°C) containing 0.800 kg of water, the final temperature in the calorimeter is 64.14°C. What was the initial temperature of the calorimeter?
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