### Identifying Phase Transitions on a Heating CurveA pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady rate, and the temperature is recorded as time passes. Below is a graph of the results:#### Graph Description:- **X-axis**: Heat added (kJ/mol)- **Y-axis**: Temperature (°C)- **Curve**: The graph shows an upward trend initially, indicating an increase in temperature as heat is added. It then becomes horizontal, indicating a phase change where temperature remains constant despite further heat addition. The curve resumes an upward trend once the phase change is complete.#### Use this graph to answer the following questions:1. **What is the melting point of X?** - [Input for numerical answer] °C2. **What phase (physical state) of X would you expect to find in the flask after 7 kJ/mol of heat has been added?** - [Checkboxes] - Solid - Liquid - Gas[Buttons for interaction]- Explanation- Check(Note: The graph illustrations make it clear that specific regions indicate different phases based on the heat added and the corresponding temperature changes.)---This educational content helps students understand how to interpret heating curves and identify phase transitions like melting points.

Answer:When we start heating a solid, it gains and its temperature starts rising up to its melting…

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: 100 temperature (°C) 80. 60 40 20 0. -20. 40. 20 30 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 7 kJ/mol of heat has been added? (check all that apply) Osolid Oliquid Ogas X 40 5 50

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: 100 temperature (°C) 80. 60 40 20 0. -20. 40. 20 30 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 7 kJ/mol of heat has been added? (check all that apply) Osolid Oliquid Ogas X 40 5 50

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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