[GSS student edition]

Hello,
Yesterday I tried to enter data of weight percentage of some gases present in an oil field, so that the software could then calculate the fugacity, activity and partial pressures of these gases. When I gave the option to calculate to select what was the calculation I wanted, it indicated an error indicating that there is not an initial system specified.
What should I do? can you help me? would I skip a step?
Also, I would like to enter the reservoir temperature and pressure so that I can consider them in the calculation and I do not know how to do it.
Attached a screen print.

Regards,

Raquel

print error gwb gss.pptx

[How do I calculate the activity in GWB]

Hi, I need your help :)

If I have the molar percentage of some gases (CH4 and CO2) and I require the activity of them or the partial pressure to be able to perform modeling as I must do in the software modules.

Thanks!

Regards :D

Raquel.