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A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady rate and the temperature recorded as time passes. A graph of the results is shown in the picture. A. Using the graph, what is the melting point of X? B. What phase (physical state) of X would you expect to find in the flask after 9 kJ/mol of heat has been added? Select all that apply: solid, liquid, or gas

A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady rate and the temperature recorded as time passes. A graph of the results is shown in the picture. A. Using the graph, what is the melting point of X? B. What phase (physical state) of X would you expect to find in the flask after 9 kJ/mol of heat has been added? Select all that apply: solid, liquid, or gas

Chemistry: An Atoms First Approach
Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter7: Chemical Energy
Section: Chapter Questions
Problem 108AE
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A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady rate and the temperature recorded as time passes. A graph of the results is shown in the picture. A. Using the graph, what is the melting point of X? B. What phase (physical state) of X would you expect to find in the flask after 9 kJ/mol of heat has been added? Select all that apply: solid, liquid, or gas
190. 170. 150. 130. temperature (°C) 110. 90. 70. 50. 0. 10. 20. 30. 40. 50. heat added (kJ/mol)
Transcribed Image Text:190. 170. 150. 130. temperature (°C) 110. 90. 70. 50. 0. 10. 20. 30. 40. 50. heat added (kJ/mol)
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Step 1

The provided curve is the heating curve of the compound which states the change in the phase of the compound as the heat is added to the compound. The sleeping line represents the equilibrium between two-phase, and the remaining lines represent a particular state of the compound.

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