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: 140. 120. temperature (°C) 100. 80. I Don't Know 60. 0. What is the melting point of X? Use this graph to answer the following questions: 10. What phase (physical state) of X would you expect to find in the flask after 5 kJ/mol of heat has been added? Submit 80 heat added (kJ/mol) 20. 888 0°C (check all that apply) solid liquid gas 30. X 5 40. DII FB © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibil F9 F10 ? S olo

Use the information provided below to calculate the quantity of heat (in kJ) required to convert 52.55 g of substance A from an initial temperature of -7.048°C to a final temperature of 129.6°C. The molar mass of the substance is 25.28 g/mol. Melting Point of A = 3.459°C Heat of fusion = 10.39 kJ/mol %3D %3D Boiling point of A = 107.3°C Heat of vaporization = 72.43 kJ/mol Solid Liquid Gas Specific heat (J/g°C) 2.05 4.74 6.52 Report your answer to the tenths place and do not include units.

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. A graph of the results is shown in the picture. A. Using the graph, what is the melting point of X? B. What phase (physical state) of X would you expect to find in the flask after 9 kJ/mol of heat has been added? Select all that apply: solid, liquid, or gas

1. Using the heat curve below, what phase change is occurring at the plateau at point B (between A and C)? 2. What state of matter is the substance in at point C on the heat curve below?

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 graph of the results: temperature (°C) 70. 50. 30. 10. 10.- -30. 0. 10. What is the boiling point of X ? 20. Use this graph to answer the following questions: heat added (kJ/mol) What phase (physical state) of X would you expect to find in the flask after 7 kJ/mol of heat has been added? 30. °C 40. (check all that apply) solid O liquid gas 50.

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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: 12 230 temperature (°C) 210. 190. 170 150.- 130. 0. 10. What is the melting point of X ? Use this graph to answer the following questions: 30. heat added (kJ/mol) What phase (physical state) of X would you expect to find in the flask after. 17 kJ/mol of heat has been added? 40 50. 0°C (check all that apply) Osolic O liquid Ogas 60 olo Ar

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: 110. 90. temperature (°C) 70. 50. 30. 0. 10. 20. 30. 40. 50. heat added (kJ/mol) Use this graph to answer the following questions: What is the boiling point of X ? °C (check all that apply) What phase (physical state) of X would you expect to find in the flask after 12 kJ/mol of heat has been added? solid O liquid gas

Calculate the amount of heat needed to raise the temperature of 55.0 g of liquid water from 25°C to 99°C. The specific heat of liquid water is 1.00 cal/g °C