The example below shows the calculation of the vapour pressure curve of nitrogen with a complicated equation of state (IUPAC reference equation), using the graphical (web) user interface of ThermoC.
First one has to select an equation of state, the substance, and the main program:
Then the input data for the program (here: the temperature range) must be specified:
Here are the results: vapour pressures and orthobaric molar volumes of nitrogen:
You can try to do these calculations yourself here.
Here is the same example using the text user interface (script interface).
The third option is running the ThermoC programs in batch mode.