OK, here's my question. In a low pressure environment, say 4 PSI, that has been compensated with a breathable amount of O2, as they do in a spaceship, is combustion more, less or about the same. In other words, if I were to try and light up a cigarette with a match in gas that had more or less the same O2 density as you'd find at sea level on Earth, would the match and cigarette behave more or less the same? Would the absence of an inert gas make a difference?
Thanks!
Thanks!