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Part 1 (3.3 points) See Periodic Table See Hint Urea is a common fertilizer with the formula CO(NH₂); that is sometimes used as a chemical de-icer for icy road surfaces in the winter months. Adding a solute to a solvent causes the freezing point to be lowered and allows the solvent to remain liquid at lower temperatures. The value of K for water is 1.86"C/m and its normal freezing point is 0.00°C. Urea is a nonvolatile nonelectrolyte solute. What molality of urea is required to lower the freezing point of ice water by 1.43C7 Part 2 (3.3 points) See Hint Using your answer from Part 1, calculate the mass of urea that must be added to 250 mL of water (density 1.00 g/ml) to lower the freezing point by 1.43°C. mass of urea US Part 3 (3.3 points) Q See Hint Other common chemical de-icers include NaCl, MgCl, and CaCl₂ Rank the following solutions in order of increasing freezing point. Question List (4 items) (Drag and drop into the appropriate area)