what property of helium allows the airship tp float in the air?

Answer 1

It density is less than that of air

Answer 2

The property of Helium that allows an airship to float upwards is that as a gas, at atmospheric temperature and pressure,its density is much lower that that of the air.
It also has the following properties:-
It is an inert(noble) gas - non reactive. Hence for an helium filled airship a lightning strike is not dangerous.
Its condensing point is -269 degrees Celsius (4K).
Its freezing point is -270 degrees Celsius (3K)
Hence for a helium filled airship, no matter how cold the atmosphere becomes the helium balloon will not start condensing..

Answer 3

why does a helium balloon float in the air? same principle. because helium is a gas that is lighter than air, if you contain helium within an enclosed space, the helium is still light enough to make an airship or balloon float in air.

Answer 4

Helium a gas that is lighter than air. In order for a blimp to attain lift, a sufficient amount of helium must be carried in bladders to counteract the weight of the airship and create lift.

Answer 5

the helium is after hydrogen the gaz which has the lowest density (about 1/7 compared to air) So an airship full of helium is moved upwards by Archimedes's force.

Hydrogen even lighter but highly Flammable. so ,we prefer helium which is more save

Answer 6

Inter molecular (or inter atomic) forces between Helium atoms are very weak because helium is a noble gas.
Because of the weak intermolecular bonds, helium atoms travel very fast and 'keep away' from each other as it can.
Thus, helium gas in a container should have a considerable volume.
But, density = mass per unit volume
Then, helium is less dense and therefore it floats in air.

The answer for your question is, the low density of helium gas.

Answer 7

Helium is the 2nd most abundant element in the sun. It also gets very homesick. This explains why helium tries to lift itself into the sky even when trapped inside a container such as a heavy blimp.

Answer 8

Helium is lighter than air. Gravity has less effect on helium and it rises.

Answer 9

Helium is lighter than oxygen and nitrogen (air) therefore it floats. Lotsa formula but that's the simple explanation.

Answer 10

Helium is lighter than air

Answer 11

Helium (He) is less dense than air.
So the fluid with less density in a binary mixture (helium in air) goes up.

=)