b. How much energy is removed from a 25.9 g of an unknown sample at 425K to solidify the sample and lower the temperatur

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B How Much Energy Is Removed From A 25 9 G Of An Unknown Sample At 425k To Solidify The Sample And Lower The Temperatur 1 (355.2 KiB) Viewed 14 times

b. How much energy is removed from a 25.9 g of an unknown sample at 425K to solidify the sample and lower the temperature to 255K. The boiling point of the unknown compound 360K. The melting point is 265K. Assume the molar mass of the unknown compound is 189.6 g/mol. The following values are the specific heat capacities of each phase and the change in enthalpy for each phase change: Gaseous Cs: 1.65 J/g °C Liquid C: 1.96 J/g°C Solid Cs: 1.05 J/g°C AHvap = 37.45 kJ/mol AHfus 10.55 kJ/mol