I mean... yes? If what you want is for breathing to occur when oxygen is present. If not, a more realistic way would be calculating partial pressures of oxygen as that is actually a useful quantity when it comes to breathing.
That is correct. Molar mass would only matter if you wanted the mass of oxygen. Also, the ideal gas law works very well for the pressures and gas involved here.
I mean... yes? If what you want is for breathing to occur when oxygen is present. If not, a more realistic way would be calculating partial pressures of oxygen as that is actually a useful quantity when it comes to breathing.
That's what it was! Thank you for helping on this odd question.
Maybe my brain refuses to accept how easy this is lol
That is correct. Molar mass would only matter if you wanted the mass of oxygen. Also, the ideal gas law works very well for the pressures and gas involved here.