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Engineering LibreTexts

8.3: Action Item

  • Page ID
  • Answer the following problems, and submit your answers to the drop box in ANGEL that has been created for this module.

    Please note:

    • Your answers must be submitted in the form of a Microsoft Word document.
    • Include your Penn State Access Account user ID in the name of your file (for example, "module2_abc123.doc").
    • The due date for this assignment will be sent to the class by e-mail in ANGEL.
    • Your grade for the assignment will appear in the drop box approximately one week after the due date.
    • You can access the drop box for this module in ANGEL by clicking on the Lessons tab, and then locating the drop box on the list that appears

    Problem Set

    1. Consider Methane (Pc = 666 psia, Tc = – 117 F) and Ethane (Pc = 706 psia, Tc = – 90 F) stored in two different vessels at the following conditions:
    Methane Vessel P = 1332 psia T = 55 F
    Ethane Vessel P = 1412 psia T = 95 F

    Using the Standing-Katz Z-factor plot, determine the compressibility factor of both substances. Any observation? Are those values different? Describe the situation for both gases. If their Z-factors are the same, does it mean that both gases have the same density? What does it mean?


    • Prof. Michael Adewumi (The Pennsylvania State University). Some or all of the content of this module was taken from Penn State's College of Earth and Mineral Sciences' OER Initiative.