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So O2 has zero of heat of formation (or enthalpy of formation). The enthalpy of a reaction is defined like this: H = Hproducts-H reactants. The enthalpy of reaction in this case, is the same as the heat of combustion. Hproducts is obtained summing the heats of formation.
Calculate the quantity of heat that is absorbed/released when 9.00 g of steam condenses to liquid water at 100Â°C. B) 20.3 kJ of heat are released. 76) Calculate the total quantity of heat required to convert 25.0 g of liquid CCl4(l) from 35.0Â°C to gaseous CCl4 at 76.8Â°C (the normal boiling point for CCl4).8) The boiling point of an aqueous 1.83 m (NH4)2SO4 (molar mass = 132.15 g/mol) solution is 102.5Â°C. Determine the value of the van't Hoff factor for this solute if the Kb for water is 0.512Â°C/m.