The solubility of potassium nitrate is 155 g per 100 g of water at 75°C and 38.0 g at 25°C. What mass (in grams) of potassium nitrate will crystallize out of solution if exactly 122 g of its saturated solution at 75°C is cooled to 25°C? Potassium nitrate : KNO, 39.22 g O 18.18 g 55.98 g 45.9 g 74.16 g

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