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Given the unbalanced equation Ag2CO3 yeild Ag + O2 + CO2 how many moles can be produced from 2.5 moles of Ag2CO3

In a coffee-cup calorimeter, ammonium nitrate of 1.50 grams is added with water of 72.0 grams at an initial temperature of 25.00°C. the final temperature of the calorimeter contents is 23.83°C After dissolution of the salt. (Assuming the solution has a heat capacity of 4.18 J/°C·g) determine the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.

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