A 0.250-mole sample of oxygen gas (O2) occupies 5.60 L at STP and 0.250 mole of ozone gas (O3) occupies _____ L.

⚑ Flag

it occupies the same volume as O2 because if moles are same then the volumes of  gases are also same . 1 mole of any gas is 22.4 l at stp