1A certain substance X has a normal freezing point of 7.9 °C and a molal freezing point depression constant K,=5.08 °C·kg•mol . A solution is prepared bydissolving some urea ((NH,) CO) in 600. g of X. This solution freezes at 6.5 °C. Calculate the mass of urea that was dissolved.2Round your answer to 2 significant digits.g

Answered: A certain substance X has a normal…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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1
A certain substance X has a normal freezing point of 7.9 °C and a molal freezing point depression constant K,=5.08 °C·kg•mol . A solution is prepared by
dissolving some urea ((NH,) CO) in 600. g of X. This solution freezes at 6.5 °C. Calculate the mass of urea that was dissolved.
2
Round your answer to 2 significant digits.
g

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Colligative properties:

The colligative properties are those properties of solutions that depend on the number of solute particles, and not depend on the nature of the solute particles. The number of solute particles can be related to the molality of the solution. These properties depend on the nature of the solvent.

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