Lattice energy of potassium nitrate (KNO3) = -163.8 kcal/molHydration power of KNO3 = -155.5 kcal/moleHeat of equipment is the quantity of heat soaked up by water as soon as 1 mole that KNO3 is liquified in itHeat of equipment = Hydration energy - Lattice power = -155.5 -(-163.8) = 8.3 kcal/mol1 kcal/mol = 4.184 kJ/moleTherefore, 8.3 kcal/mole = 4.184 * 8.3 = 34.73 kJ/molNow, 34.73 kJ of warmth is took in when 1 mole that KNO3 is liquified The provided 105 kJ of warm would exchange mail to : 105/34.73 = 3.023 mole of KNO3Molar mass of KNO3 = 101.1 g/moleMass of KNO3 = Molar mass * moles = 101.1 * 3.023 = 305.63 g = 0.3056 kg

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