Hydrogen and Helium are both lighter than air.
Yes. Natural gas is mostly methane, which has about half the density of air.
Hot air, hydrogen or helium are lighter than cold air.
Balloons filled with it float in air
Lighter-than-air devices, like hot air balloons and airships, work by utilizing the principle of buoyancy. The device is filled with a gas, such as hot air or helium, that is lighter than the surrounding air. This creates a lifting force that allows the device to float in the air. Changes in temperature or gas density can be used to control the device's altitude.
Any Gas with a lower density than 1.2kg/m^3 will make a balloon rise. However I think you are talking about helium. Gases that are lighter than air like Hydrogen etc Helium Is the lighter than air gas that is used to fill party balloon's it is an inert gas, that is it doesn't burn unlike Hydrogen which is the gas that was used in the Hindenburg air ship.
No, Natural gas is lighter than air.
Yes. Natural gas is mostly methane, which has about half the density of air.
Flatulence contains a portion of methane gas, and the methane portion is lighter than air.
Air / Gas
Yes, natural gas is lighter than air. It will rise and dissipate into the atmosphere if released into the air.
Natural gas is lighter than air and rises.
Hot air, hydrogen or helium are lighter than cold air.
Balloons filled with it float in air
It is lighter than air
Lighter than air vehicles are vehicles which fly by reducing their overall weight to zero or near zero. This is done by using a large envelope or balloon filled with a lighter-than-air gas such as helium or hot air to lift the vehicle.
the molecues are lighter than the ones in the air.
While it is not a "Noble Gas" it is much lighter than air. It is not lighter than Hydrogen, but it does not ignite as easily.