helium

[frostfair]

what property of helium allows the airship to float in the air

[mr. piper]

helium

[corganiser]

helium is lighter than the combination of gases that constitute air

[mr. piper]

 helium (what happened there?)  has a lower atomic weight than air( that is a generalised mixture of nitrogen ,oxygen etc.) so it is displaced upwards by the surrounding air. such as anything that floats on water. ie 1 litre of helium weighs less than 1 litre of air, as 1 litre of polystyrene weighs less than 1 litre of water so the polystyrene floats on water.the helium floats on the air( or attempts to)

[AB Editor]

answers from duplicate question:

It is not flammable.
Submitted By: newtron Date Submitted: Wed 23/03/05
 
 
Once the airship has been used, the engineers can inhale the helium to make cool squeeky voices.
Submitted By: JOEYSHABADO Date Submitted: Wed 23/03/05
 
 
 

[AB Editor]

answer from duplicate question:

 
It's a very good subject for homework questions!

Come on think about what you're asking

A property is a characteristic of something - there are an almost limitless number of  properties of anything colour, taste, density conductivity, atomic number, valency the list is endless.
 
Submitted By: jake-the-peg Date Submitted: Wed 23/03/05

[shandoh]

Helium is a noble gas therefore inert so will be unreactive in the athsmosphere!