How rare is helium?

Answer 1

because helium is toxic for most living things for that reason its rare to find but that's why its mainly used for balloons n more for ex:

• filling party balloons as it is a much safer gas (non-flammable)
• widely used as an inert gas shield for arc welding
• high speed push gas inside air to air missiles for guidence corrections.
• protective gas in growing silicon and germanium crystals, and in titanium and zirconium production
• cooling medium for nuclear reactors, helium won't become radioactive
• a mixture of 80% helium and 20% oxygen is used as an artificial atmosphere for divers and others working under pressure
• cryogenics and superconductivity
• rare document preservation (i.e. Declaration of Independence)
• as a gas for supersonic wind tunnels
• pressurizing agent for liquid fuel rockets (inert so won't react)
• leak detection agent for extremely small leaks.
• nuclear detonation simulations (using conventional explosives)
• isotopic dating by helium ratios (seawater, ocean beds,etc)
• helium/neon lasers
• helium cardio-pulmonary resusitation pump (heart surgery)
• helium filled border patrol "AEROSTAT" monitoring blimps

Answer 2

Helium is not rare, it's the second most abundant element in the universe after hydrogen. Having said that, extracting it on Earth is not straightforward. The Earths atmosphere contains very little helium, since the can easily escape the earths atmosphere. The bulk of the helium we use has to be extracted from natural gas through distillation - so although there is a lot of it about, the current and cheap way of obtaining it is through a nonrenewable resource.

Answer 3

Helium can escape because it is much lighter than the rest of earth's atmosphere. It floats to the top of the atmosphere and is blown out into space by the solar wind.

Answer 4

% in Earth's Crust = 5.5×10-7%% in Oceans = 7.2×10-10%

Answer 5

• helium is a bunch of .....................
• apples you hear that apples
• apple
• apple

Answer 6

helium is for found in the earth's crust as it does not form any compounds. it is a gas and is found only in the atmosphere.

Answer 7

helium is a gas and is found only in the earth's atmosphere and not in the earth's crust (as it does not form any compounds)

Answer 8

Helium is a gas and is found in the earth's atmosphere and not in the earth's crust.

Answer 9

Very less. It is about 5.5×10-7%