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.
Car Buying Service. The Odyssey has charmed us for years with its unrivaled road manners, smooth powertrain, and spacious eight-seat interior. With a cylinder-deactivation feature on its 248-hp 3.5-liter V-6, itâs as fuel efficient as it is space efficient. Perhaps most exciting is the built-in vacuum in the cargo area.