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[" The amount of urea to be dissolved in "500" c.c.of water "],[(K=1.86^(@)Cmol^(-1)" ) to produce a depression of "0.186^(@)C" in the "],[" freezing point is: "],[[" (a) "9g," (b) "6g," (c) "3g," (d) "0.3g]]

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