It's now half a decade since I was in high school. I'm not worried about math and physics- I've got too much Laplace, Fourier, Topology, etc etc.
Chemistry! I must be VERY rusty in chemistry right now. Yeah, I couldn't recall the chemical name of petersalt.
So our predecessors, those who made it and those who did not, KINDLY respond to Chege. I'm more interested in study areas touching on chemistry.
ION, pride of africa has received a new Embraer 190 here:
https://m.facebook.com/photo.php?fbi...0&l=4427100162