6. Consider the square-well potential to the right.. If you wanted your system to be an ideal gas, what would be the value of sigma () and epsilon () ? 7. Calculate the molar volume (in cm3/mol ) of R-134a at 70C and 17 bar three ways: a. Ideal gas law b. Van der Waals equation of state (use the spreadsheet on Brightspace) i. Note: In class we used the version of the VDW EOS that had you input a and b directly. Right below that is the version where you input Tc and Pc (in the appropriate units) and the parameters ( a and b ) are calculated directly. Use this one (with the Tc and Pc provided from the NIST Webbook). c. NIST Webbook Calculate and compare the Z values for each as well. Answer the following questions: 1. If you were to do the experiment yourself to calculate the molar volume at the state of interest, how might you do this? Describe an experiment. 2. Which of the three values you calculated for Z above would be closest to your experimental value? Why? 3. Is the NIST webbook an experimental value? Explain your