Which salt did you test Ammonium nitrate Endothermic Salt Trial 1 Mass of Salt Used (g) Moles of Salt Used 6.240 Cs = 4.18 Initial Temperature (°C) Final Temperature (°C) AT = Tf-T₁ *asoln () (see note below table) 9rxn (1) AH (KJ/mol salt) Average AH (kJ/mol salt) *asoln = m* Cs* AT where m = mass in grams of water + salt J 9°C 19.7 15.2 -4.5 the same value as water Trial 2 8.01 19.6 14.3 -5.3

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