Hi Mielo,
There are a number of westerners working in universities here. Conditions available really depend on agreements made with the university's administration. As far as im concerned, public universities normally provide housing allowances, and maybe other allowances i may not be aware of. As for the salary being a student, i would not know much about it. The duration also depends on agreement made with the university administration. I would recommend my university, "Cavendish University Uganda" You can google it for more info. Unfortunately, we dont have Chemistry as a course module but look through the website and hope it helps. It is a new university and has better standards compared to many around here. Talk about marketing my institution
All the best.