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4. A 2.00-g sample mixture of CaCl 211O and K:CO H:O is added to water. Afler drying, the mass of the recovered CaC O HO precipitate is 0.654 g. Upon addition of K.CO HO to the supernatant there is a small amount of precipitate formed indicating that K CO.H O is the limiting reactant. What is the percent composition of the salt mixture? Suppose that the CaCO..Ha0 in question 4 is mistakenly dried at 120°C rather than air dried. Calculate the percent composition of the salt mixture using the formula for anhydrous aC,O.. What is the error introduced by this blunder? 5. Experiment 7 Limiting Reactant

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