A certain substance X meits at a temperature of -7.9 °C. But if a 450. g sample of X is prepared with 10. g of urea ((NH₂), CO) dissolved in it, the sample is found to have a melting point of -9.6 °C instead. Calculate the molal freezing point depression constant Ky of X. Be sure your answer has the correct number of significant digits. 0.8 X

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter12: Solutions
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A certain substance X melts at a temperature of -7.9 °C. But if a 450. g sample of X is prepared with 10. g of urea ((NH₂), CO) dissolved in it, the sample is
found to have a melting point of -9.6 °C instead. Calculate the molal freezing point depression constant K, of X.
Be sure your answer has the correct number of significant digits.
mol kg
X
Transcribed Image Text:A certain substance X melts at a temperature of -7.9 °C. But if a 450. g sample of X is prepared with 10. g of urea ((NH₂), CO) dissolved in it, the sample is found to have a melting point of -9.6 °C instead. Calculate the molal freezing point depression constant K, of X. Be sure your answer has the correct number of significant digits. mol kg X
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