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.
Check out Chevroletâs 2016 Traverse full-size crossover. With 3 rows of seating for 7 passengers, 116.3 cubic feet of cargo room (with the rear seatbacks folded), V6 power, and all kinds of creature comforts, this right-size Chevy wonât strain the gas budget, and itâll still fit in the garage.