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) 40 26 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. 38 kJ/mol of heat has been added? C (check all that apply) solid Oliquid gas

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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:
temperature (°C)
100
M.
10
40.
20.
B
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
38 kJ/mol of heat has been added?
0-C
(check all that apply)
solid
O liquid
gas
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: temperature (°C) 100 M. 10 40. 20. B 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 38 kJ/mol of heat has been added? 0-C (check all that apply) solid O liquid gas
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