Hydrogen, helium, ammonia, methane, neon, coal gas and pure nitrogen are all lighter than air. A pocket of air can be made lighter than the surrounding air by heating it. Continue Reading.
Related Questions. 1  Do 2015 Jeep Wrangler Sports have back air vents 1 answer I recently bought a 2015 Jeep Wrangler Sport and I am not sure if it has back air vents or not... If it does I can't seem to find them.
3) 2016 Chevrolet Suburban â 121.1 cubic feet. The roomiest of GMâs Roomiest SUVs is the 2015 Chevrolet Suburban, backed by a cargo maximum of 121.1 cubic feet and â thanks to available front-row bench seating â an occupant maximum of nine people.