A cold bag shall consist of the following ingredients: 25 g NH4NO3 (Ammonium nitrate) and 75 Now the ammonium nitrate is converted into How much Celsius will the mixture cool? Notes 1: The (specific) heat capacity of water is cw 75.3_nbspJ/(K·mol) respectively. 4.18 J/(K·kg). Notes 2: Q = m·c·ΔT Notes 3: The ammonium nitrate dissolves in water in its ions, the name indicating which.