What is the freezing point in oc of a solution

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Problem- What is the freezing point in oC of a solution prepared by dissolving 6.60g of MgCl2 in 110 g of water? The value of Kf for water is 1.86 (?C?kg)/mol, and the van't Hoff factor for MgCl2 is i = 2.7.

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