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A certain substance X has a normal freezing point of 1.6C and a molal freezing point depression constant Kf=4.09Ckgmol1 A solution is prepared by dissolving
A certain substance X has a normal freezing point of 1.6C and a molal freezing point depression constant Kf=4.09Ckgmol1 A solution is prepared by dissolving some urea ((NH2)2CO) in 800 . g of X. This solution freezes at 4.1C. Calculate the mass of urea that was dissolved. Round your answer to 2 significant digits
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