Why is helium preferred to hydrogen in airships?
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Hydrogen is lighter than helium, helium is the preferred lifting agent. Helium is not flammable like hydrogen and it is preferred for safety reasons. Although Hydrogen has a higher lifting power the difference is inconsequential because they are both still lighter than air agents.
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ʏᴏᴜʀ ᴀɴsᴡᴇʀ ɪs ᴛʜᴇ ᴀᴛᴛᴀᴄʜᴍᴇɴᴛ
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