3. Use the diagram to answer the following: 101 di haigge pe a. Identify the point of the graph where each of the following occurs. i. melting begins iii. boiling begins ii. freezing begins iv. condensation begins b. Suppose you have 10grams of water at Temperature B A C Solid A and B are temperatures; The others are points on the graph D Solid-Liquid Liquid PERAT E F Liquid Gas Gas G

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Please help with question 3
**3. Use the diagram to answer the following:**

- **a. Identify the point of the graph where each of the following occurs:**
  - i. Melting begins: Point C
  - ii. Freezing begins: Point D
  - iii. Boiling begins: Point E
  - iv. Condensation begins: Point F

- **b. Suppose you have 10 grams of water at 25°C. What do you need to do to get the 10 grams of water to point C?**
  - Increase energy/temperature to reach the melting point.

**Graph Description:**
The graph depicts the relationship between temperature and energy for a substance. It is divided into phases: Solid, Solid → Liquid, Liquid, and Liquid → Gas. Points C and D represent phase transitions (melting and freezing), while points E and F represent boiling and condensation.

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

- **a. Label each phase in the diagram to the right in the box provided.**
  
- **b. What are the normal melting and normal boiling points?**
  - At 1 atm, the melting point is approximately 54.4K, and the boiling point is approximately 90.2K.

- **c. What is the phase change associated with letter A when the pressure is suddenly dropped?**
  - Phase change from Solid to Gas (sublimation).

- **d. What singular change can you do to letter B to vaporize it?**
  - Increase temperature to reach the boiling point.

- **e. What is happening on the molecular level for your answer in part D to work?**
  - As temperature increases, the kinetic energy of the molecules increases, allowing them to overcome intermolecular forces and transition from liquid to gas.

**Diagram Description:**
The phase diagram shows temperature (Kelvin) on the x-axis and pressure (atm) on the y-axis. It highlights regions of solid, liquid, and gas, with a curve depicting the phase boundaries. The critical points are marked, showing transitions such as sublimation and vaporization under different conditions.
Transcribed Image Text:**3. Use the diagram to answer the following:** - **a. Identify the point of the graph where each of the following occurs:** - i. Melting begins: Point C - ii. Freezing begins: Point D - iii. Boiling begins: Point E - iv. Condensation begins: Point F - **b. Suppose you have 10 grams of water at 25°C. What do you need to do to get the 10 grams of water to point C?** - Increase energy/temperature to reach the melting point. **Graph Description:** The graph depicts the relationship between temperature and energy for a substance. It is divided into phases: Solid, Solid → Liquid, Liquid, and Liquid → Gas. Points C and D represent phase transitions (melting and freezing), while points E and F represent boiling and condensation. **4. Using the phase diagram to the right:** - **a. Label each phase in the diagram to the right in the box provided.** - **b. What are the normal melting and normal boiling points?** - At 1 atm, the melting point is approximately 54.4K, and the boiling point is approximately 90.2K. - **c. What is the phase change associated with letter A when the pressure is suddenly dropped?** - Phase change from Solid to Gas (sublimation). - **d. What singular change can you do to letter B to vaporize it?** - Increase temperature to reach the boiling point. - **e. What is happening on the molecular level for your answer in part D to work?** - As temperature increases, the kinetic energy of the molecules increases, allowing them to overcome intermolecular forces and transition from liquid to gas. **Diagram Description:** The phase diagram shows temperature (Kelvin) on the x-axis and pressure (atm) on the y-axis. It highlights regions of solid, liquid, and gas, with a curve depicting the phase boundaries. The critical points are marked, showing transitions such as sublimation and vaporization under different conditions.
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