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A 0.744 g sample of a mixture containing BaCl2.2H20 (MM=244) and KCl is heated up to 150 Celsius to obtain a constant mass of 0.708g. What is the mass of KCl present in the mixture? 1.)0.500g 2).0.425g 3.)0.300g 4.)0.250g 5.)0.150g Give the answer with each and every step and theory parts.