Do any of you guys know about the weight of ozone (O3) vs. hydrogen? Also whats the most light weight gas you guys know of?

Least dense or lightest molecularly?

Just kidding, they're the same thing. H2 is the lightest of all gases. Unless you somehow had a hydrogen radical in the gas phase. :confused:

One mole of gaseous hydrogen = 2g
One mole of gaseous ozone = (16 * 3) = 48g

Roughly, accurate to 1dp.

Nshanin has your second question right as far as I know, hydrogen is the lightest gas that you could actually... find/create.

Why didn't you just google this? Please do not clutter up this forum with such simple questions that could be answered by simply pulling your head from your sphincter and looking the shit up yourself.

Locked.