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7.A hot pack usually contains caicium chloride or magnesium sulfate. The heat of solution for calcium chloride is 82.8kJ.40.0g of calcium chloride is added to

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7.A hot pack usually contains caicium chloride or magnesium sulfate. The heat of solution for calcium chloride is 82.8kJ.40.0g of calcium chloride is added to 2.5kg water at 46 degree. Calculate the final temperature of the water, assuming that no heat is lost to the surrounding. (Ispecific heat capacity of water is 4.18J/g.C ) (5 marks) CaCl2+Ca2twa+2Cr(we)

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