A certain substance X has a normal freezing point of 1.7 °C and a molal freezing point depression constant K,=2.34 °C•kg•mol -1 A solution is prepared by dissolving some urea ((NH,) CO) in 400. g of X. This solution freezes at 0.0 °C. Calculate the mass of urea that was dissolved. Be sure your answer has the correct number of significant digits.

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.