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.
Yes, we think it is a good car because of its poised handling, roomy interior and cargo area, and supportive front seats. Consumer Reports magazine predicts models with the 2.5-liter gas engine will have reliability that is 39% higher than average and that diesel models will have average reliability.The interior is one area where we aren't impressed by the Jetta.one of those comes as a wagon, like the Jetta, though the Elantra is available as a hatchback. The Ford Focus, Kia Forte and Mazda3 hatchbacks might also provide good comparisons to the Jetta wagon. Learn more. 1  2013 Volkswagen Jetta SportWagen Pricing and Research (Cars.com).