C. What is the phase change associated with letter A when the pressure is suddenly dropped? e. 54.4 54.8 T Kelvin to zmog vnom wor pareioseneg of bazu pried onow nollaberint t eqmet erti szio1 of load rouons simionop of botopered of ever d. What singular change can you do to letter B to vaporize it? UKIW tad opmodo arif hol bobeer ypene orl bail bo What is happening on the molecular level for your answer in part D to work? 90.2

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Please help with question 4 c-e
**Phase Diagram Analysis**

4. **Using the phase diagram to the right:**

   a. **Label each phase in the diagram:**  
   Identify the phases present at different sections in the diagram provided. The marked sections A, B, and the region below the curve represent different phases.

   b. **Normal melting and boiling points:**  
   Determine the temperature at which the substance changes from solid to liquid (melting point) and from liquid to gas (boiling point) at 1 atm pressure.

   c. **Phase change with letter A when pressure drops:**  
   Analyze the process that occurs to the substance represented by letter A as pressure decreases sharply. This typically involves a transition from one phase to another.

   d. **Singular change for letter B to vaporize:**  
   Identify what specific change (e.g., temperature or pressure adjustment) is needed for the substance at letter B to change into a vapor.

   e. **Molecular-level changes for part D:**  
   Discuss the molecular transformations and interactions occurring as the substance transitions states due to the change applied in part D.

   f. **Vapor pressure at approximately 80K:**  
   From the graph, estimate the pressure of the substance when the temperature is around 80 Kelvin.

**Graph Explanation:**

- The graph plots Pressure (P in atm) against Temperature (T in Kelvin).
- There are three marked boxes indicating different phases or states of matter.
- The curve demonstrates phase boundaries where changes occur.
- The vertical lines at temperatures 54.4 K, 54.8 K, and 90.2 K intersect with the curve, suggesting key phase transition points.
- The graph's detailed pressure scale ranges from 0.00150 atm to just above 1 atm.
Transcribed Image Text:**Phase Diagram Analysis** 4. **Using the phase diagram to the right:** a. **Label each phase in the diagram:** Identify the phases present at different sections in the diagram provided. The marked sections A, B, and the region below the curve represent different phases. b. **Normal melting and boiling points:** Determine the temperature at which the substance changes from solid to liquid (melting point) and from liquid to gas (boiling point) at 1 atm pressure. c. **Phase change with letter A when pressure drops:** Analyze the process that occurs to the substance represented by letter A as pressure decreases sharply. This typically involves a transition from one phase to another. d. **Singular change for letter B to vaporize:** Identify what specific change (e.g., temperature or pressure adjustment) is needed for the substance at letter B to change into a vapor. e. **Molecular-level changes for part D:** Discuss the molecular transformations and interactions occurring as the substance transitions states due to the change applied in part D. f. **Vapor pressure at approximately 80K:** From the graph, estimate the pressure of the substance when the temperature is around 80 Kelvin. **Graph Explanation:** - The graph plots Pressure (P in atm) against Temperature (T in Kelvin). - There are three marked boxes indicating different phases or states of matter. - The curve demonstrates phase boundaries where changes occur. - The vertical lines at temperatures 54.4 K, 54.8 K, and 90.2 K intersect with the curve, suggesting key phase transition points. - The graph's detailed pressure scale ranges from 0.00150 atm to just above 1 atm.
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