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) 230 210. 190 170 150.- 130 heat added (kJ/mol) Use this graph to answer the following questions: What is the melting 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? 0°C (check all that apply) Osolid O liquid O gas

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Chapter1: Chemical Foundations
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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:
12
230
temperature (°C)
210.
190.
170
150.-
130.
0.
10.
What is the melting point of X ?
Use this graph to answer the following questions:
30.
heat added (kJ/mol)
What phase (physical state) of X would
you expect to find in the flask after.
17 kJ/mol of heat has been added?
40
50.
0°C
(check all that apply)
Osolic
O liquid
Ogas
60
olo
Ar
Transcribed Image Text: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: 12 230 temperature (°C) 210. 190. 170 150.- 130. 0. 10. What is the melting point of X ? Use this graph to answer the following questions: 30. heat added (kJ/mol) What phase (physical state) of X would you expect to find in the flask after. 17 kJ/mol of heat has been added? 40 50. 0°C (check all that apply) Osolic O liquid Ogas 60 olo Ar
Expert Solution
Step 1

The phase change diagram is a graphical depiction of physical change (state change) that occurs in a compound over a period of time when heat is added to it.

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