Chemistry

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In a coffee cup calorimeter, 1.60 g of NH4NO3 is mixed with 75.0 g
water at an initial temperature of 23.50 ºC. When the salt was
completely dissolved, the solution temperature of the calorimeter
became 21.80 ºC. Assume the solution’s specific heat capacity is
4.184 J/g. ºC.
Calculate the enthalpy change (ΔH) for the
dissolution of NH4NO3 in J/g and J/mol

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