A graph of temperature versus time for a substance that has a mass of 2.00 kg is shown below. The sample is at a temperature of -10.0 degrees celsius and initially in the solid phase. Heat is added to the sample at a constant rate of 20.0 kj/minute. B& C are at a temperature of 119 degree Celsius. Answer the following questions: 1. What is the melting point of this substance? 2. What is/are the phase/phases that exists/exist during the process from A to B and during the process from B to C? 3. Use the graph to calculate the specific heat for this substance in solid phase. 4.Use the graph to calculate the latent heat of fusion for this substance. Temperdure Cc) B 120 (00 + 80 60 40+ 20 10 %3D 12 13 -20 Time min) -00

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A graph of temperature versus time for a substance that has a mass of 2.00 kg is shown below.
The sample is at a temperature of-10.0 degrees celsius and initially in the solid phase. Heat is
added to the sample at a constant rate of 20.0 kj/minute. B& Care at a temperature of 119
degree Celsius.
Answer the following questions:
1. What is the melting point of this substance?
2. What islare the phase/phases that exists/exist during the process from A to B and during the
process from B to C?
3. Use the graph to calculate the specific heat for this substance in solid phase.
4.Use the graph to calculate the latent heat of fusion for this substance.
Temperdture
cc)
B
120 +
100
80
60
40+
20
+
12
4
6.
10
%3D
13
-20
Time (min)
%3D
F00
Transcribed Image Text:A graph of temperature versus time for a substance that has a mass of 2.00 kg is shown below. The sample is at a temperature of-10.0 degrees celsius and initially in the solid phase. Heat is added to the sample at a constant rate of 20.0 kj/minute. B& Care at a temperature of 119 degree Celsius. Answer the following questions: 1. What is the melting point of this substance? 2. What islare the phase/phases that exists/exist during the process from A to B and during the process from B to C? 3. Use the graph to calculate the specific heat for this substance in solid phase. 4.Use the graph to calculate the latent heat of fusion for this substance. Temperdture cc) B 120 + 100 80 60 40+ 20 + 12 4 6. 10 %3D 13 -20 Time (min) %3D F00
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