the solubiliTy of salt in water at 25°c is 155 . when 80 gram of its saturated Solution at 25°c was cooled to 15°c , 40 gram of salt was precipeted . find The solubility of salt at 15°C .
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the solubility of salt at 25°C is 40. This statement is meaningless - it has no units.
But I will guess you mean 40g salt/100g solution - that is 40%m/m
Therefore 35g of solution will contain 35g/100g * 40g = 14g
The 35g of solution will contain 14g salt.
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