Saturated solution at 260C given is 5.70 g in 9.60 g of water.
9.6 g of water can dissolves ---> 5.70 g of salt
100 g of water can dissolves ----> (5.70*100)/9.6
= 59.375 g of salt
solubility of the salt = 59.38 g of salt /100 g of water.
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