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. Here is a graph of the results: temperature (°C) be here to search 140- 120 100, Explanation 80 60 40 20 y Use this graph to answer the following questions: What the boiling point of X? What phase (physical state) of X would you expect to find in the flask after 17 kJ/mol of heat has been added? heat added (kJ/mol) Check 발 C (check all that apply) Osolid Oliquid Ogas X DELL W © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center | A Hic

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The temperature on a sample of pure X held at 1.13 atm and -9. °C is increased until the sample boils. The temperature is then held constant and the pressure is decreased by 0.39 atm. On the phase diagram below draw a path that shows this set of changes. 200 400 temperature (K) pressure (atm)

pure sou 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. Here is a aph of the results: temperature (°C) 200. 180,- 160.- 120.- 100.- 10. What is the melting point of X ? heat added (kJ/mol) Use this graph to answer the following questions: What phase (physical state) of X would you expect to find in the flask after 7 kJ/mol of heat has been added? 0°C (check all that apply) solid O liquid Ogas 1

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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. Here is a graph of the results: 110. 90. temperature (°C) 70. 50. 30. 0. 10. 20. 30. 40. 50. heat added (kJ/mol) Use this graph to answer the following questions: What is the boiling point of X ? °C (check all that apply) What phase (physical state) of X would you expect to find in the flask after 12 kJ/mol of heat has been added? solid O liquid gas

= STATES OF MATTER Identifying phase transitions on a heating curve 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. Here is a graph of the results: temperature (°C) 170. 150. 130. 110. 90 70. 0. 10. What is the melting point of X ? Use this graph to answer the following questions: heat added (kJ/mol) What phase (physical state) of X would you expect to find in the flask after 5 kJ/mol of heat has been added? *C 30. X 40. (check all that apply) solid liquid gas 0/3 50.

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A shiny black solid has a melting point of 114 C. It does not conduct electricity and it does not dissolve in water to form a conducting solution. The black solid is not as hard as an ionic crystal. What type of solid is this substance? Justify your answer.