# Playing with Solubility 3

Chemistry Level 3

At $$60^\circ\text{C}$$, a 150 g $$\ce{KNO3}$$ solution must add 22 g $$\ce{KNO3}$$ crystal or evaporate 20 g of water to become a saturated solution. If the 150 g $$\ce{KNO3}$$ solution contains 68 g of $$\ce{KNO3}$$ and I evaporate 30 g of water, what is the amount of $$\ce{KNO3}$$ crystal that be separated in grams? Assume that the temperature does not change during the process.

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