Use the observation in the first column to answer the question in the second column. observation At 1 atm pressure, Substance E boils at 11. °C and Substance F boils at 30. °C. At 37 °C, Substance C has a vapor pressure of 89. torr and Substance D has a vapor pressure of 79. torr. The enthalpy of vaporization of Substance A is smaller than that of Substance B. question Which has a higher vapor pressure? Substance E Substance F Neither, E and F have the same vapor pressure. It's impossible to know without more information. Which has a higher enthalpy of vaporization? Substance C Substance D Neither, C and D have the same enthalpy of vaporization. It's impossible to know without more information. At any temperature where both substances are liquid, which has the higher vapor pressure? Substance A Substance B Neither, A and B have the same vapor pressure. It's impossible to know without more information.

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

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: temperature (°C) 160. 140. 120. 100. 80. 60. 0. 10. What is the boiling point of X ? Use this graph to answer the following questions: heat added (kJ/mol) 20. What phase (physical state) of X would you expect to find in the flask after 12 kJ/mol of heat has been added? 30. Пос (check all that apply) solid O liquid gas 40.

Use the observation in the first column to answer the question in the second column. observation The enthalpy of vaporization of Substance C is bigger than that of Substance D. At 1 atm pressure, Substance A boils at 117. °C and Substance B boils at 82. °C. At -2 °C, Substance E has a vapor pressure of 109. torr and Substance F has a vapor pressure of 59. torr. question At any temperature where both substances are liquid, which has the higher vapor pressure? Substance C Substance D Neither, C and D have the same vapor pressure. It's impossible to know without more information. Which has a higher enthalpy of vaporization? Substance A Substance B Neither, A and B have the same enthalpy of vaporization. It's impossible to know without more information. Which has a higher enthalpy of vaporization? Substance E Substance F Neither, E and F have the same enthalpy of vaporization. It's impossible to know without more information. X S