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2. Industrial gas - Wikipedia

   en.wikipedia.org/wiki/Industrial_gas

   This includes products such as balloon helium, dispensing gases for beer kegs, welding gases and welding equipment, LPG and medical oxygen. Retail sales of small scale gas supply are not confined to just the industrial gas companies or their agents. A wide variety of hand-carried small gas containers, which may be called cylinders, bottles ...

3. Lifting gas - Wikipedia

   en.wikipedia.org/wiki/Lifting_gas

   A balloon can only have buoyancy if there is a medium that has a higher average density than the balloon itself. Balloons cannot work on the Moon because it has almost no atmosphere. [14] Mars has a very thin atmosphere – the pressure is only 1 ⁄ 160 of earth atmospheric pressure – so a huge balloon would be needed even for a tiny lifting ...

4. Recreational use of nitrous oxide - Wikipedia

   en.wikipedia.org/wiki/Recreational_use_of...

   The gas is then inhaled from the balloon or dispenser. [30] This is necessary because nitrous oxide is very cold when it undergoes adiabatic decompression on exit from a canister; inhalation directly from a tank is dangerous and can cause frostbite of the larynx and bronchi. [31]

5. Noble gas - Wikipedia

   en.wikipedia.org/wiki/Noble_gas

   Helium is used to provide buoyancy in blimps and balloons. Helium and neon are also used as refrigerants due to their low boiling points. Industrial quantities of the noble gases, except for radon, are obtained by separating them from air using the methods of liquefaction of gases and fractional distillation.

6. Balloon - Wikipedia

   en.wikipedia.org/wiki/Balloon

   The enclosed helium atoms escape through small pores in the latex which are larger than the helium atoms. However, some types of balloons are labelled "helium-grade". These balloons are often thicker and have less porosity. [3] Balloons filled with air usually hold their size and shape much longer, sometimes for up to a week.

7. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!