C + O → CO
12 + 16 → 28
Air ≈ 29
So, yes, CO is less dense than air ~ 28/29
any sort of oxygen-rich air is almost cetatinly less dense that standard air. this definitely includes pure oxygen.
Carbon dioxide is more dense than air.
one carbon atom 12g/mole
two oxygen atoms 2 x 16 g/mole
total 44 grams per mole compared to 28 for N2 (nitrogen) and 32 for O2 (oxygen)
atomic mass CO=28
atomic mass N2 (78% of air) =28
so it looks like it would evenly mix but if we take into account O2 which takes about 21% of air
atomic mass O2=32
so it would most likely rise do to it being lighter than air as the combo of N2 and O2
Carbon Monoxide is poisonous. Try using Helium instead.