A certain substance X melts at a temperature of -4.3 °C. But if a 900. g sample of X is prepared with 46.80 g of urea ((NH,) CÓ) dissolved in it, the sample is found to have a melting point of -10.8 °C instead. Calculate the molal freezing point depression constant K, of X. Round your answer to 2 significant digits.

A certain substance X melts at a temperature of -4.3 °C. But if a 900. g sample of X is prepared with 46.80 g of urea ((NH,) CÓ) dissolved in it, the sample is found to have a melting point of -10.8 °C instead. Calculate the molal freezing point depression constant K, of X. Round your answer to 2 significant digits.

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

Chapter11: Properties Of Solutions

Section: Chapter Questions

Problem 129CP: You make 20.0 g of a sucrose (C12H22O11) and NaCl mixture and dissolve it in 1.00 kg water. The...

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