The vapor pressure of Substance X is measured at several temperatures: temperature vapor pressure - 39. °C 0.0135 atm - 25. °C 0.0487 atm - 11. °C 0.153 atm Use this information to calculate the enthalpy of vaporization of X. Round your answer to 2 significant digits. Be sure your answer contains a correct unit symbol. x10

LL The vapor pressure of Substance X is measured at several temperatures: temperature vapor pressure -27. °C 0.0449 atm -16. °C 0.112 atm -5.°C 0.257 atm Use this information to calculate the enthalpy of vaporization of X. Round your answer to 2 significant digits. Be sure your answer contains a correct unit symbol. Continue O 2022 McGraw Hill LLC. All Rights Re EPIC MacBook Pro ロ号 F3 F4 F5 F2 24 4. 23 7. 6. 3. 5. A G D. B. N 8

Consider a liquid with a vapor pressure of 200. torr at 20.0 °C and a vapor pressure of 400. torr at 50.0 °C. What is the closest value to the normal boiling point of this liquid? 83.8 °C O 357 °C O 295 °C 18.2 °C 22.0 °C

kJ The enthalpy of vaporization of Substance X is 5.00 and its normal boiling point is 27. °C. Calculate the vapor pressure of X at -33. °C. mol Round your answer to 2 significant digits. atm x10

How much heat is needed to convert 776. g of ice at -10.0 °C to steam at 126.0 °C? Be sure your answer has the correct number of significant digits. Note: Reference the Phase change properties of pure substances table for additional information. Water phase Specific heat Solid Liquid Gas kJ 2.03 4.184 x10 1.99 J g.°C J g.°C J g.°C

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. X Ś

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.

Consider the phase diagram shown. What is the normal sublimation point at 1 atm? Pressure (not to scale) 72.9 atm 5.1 atm 1 atm O 0°C O 100°C -56.7 °C 31°C -78.5 °C SOLID LIQUID GAS -78.5 °C -56.7 °C Temperature (not to scale) 31 °C

This question is not a grade question, its just a pratice problem.

Try Again Your answer is incorrect. The enthalpy of vaporization of Substance X is 23.0 Round your answer to 2 significant digits. 0.32 atm x10 X kJ and its normal boiling point is 10. °C. Calculate the vapor pressure of Xat - 18. °C. mol S