In a coffee-cup calorimeter, 1.60 g of NH4NO3 was mixed

Chapter , Problem 77

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In a coffee-cup calorimeter, 1.60 g of NH4NO3 was mixed with 75.0 g of water at an initial temperature of . After dissolution of the salt, the final temperature of the calorimeter contents was . a. Assuming the solution has a heat capacity of , and assuming no heat loss to the calorimeter, calculate the enthalpy of solution ( ) for the dissolution of NH4NO3 in units of kJ/mol. b. If the enthalpy of hydration for NH4NO3 is calculate the lattice energy of NH4NO3.

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