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It is used in lighter than air ships, fuel cells, fuel when used with an oxidizer, and as an ingredient of fertilizer.
Hydrogen gas was used as a gas that is lighter than air. The famous Hindenburg zeppelin was filled with hydrogen gas to keep it aloft, and met with disastrous consequences when the gas exploded. See the link listed to the left of this answer for more about the Hindenburg. Now most blimps are filled with helium instead, which is also lighter than air, but is not flammable.
When hydrogen gas is burned, it forms pure water: 2H2 + O2 --> 2H2O It could have also been burned as a source of heat, but this did not happen on a large scale as coal, wood, oil, natural gas, and other materials also burn well and are much more readily obtainable.
Hydrogen gas is not found naturally on Earth in any significant quantity. Water has 2 atoms of Hydrogen in every molecule so there is a huge amount available. Unfortunately, right now, it is not economical to retrieve it from water.
More recently, we have discovered how to use hydrogen gas in a fuel cell to produce electricity. Here, H2 is combined with oxygen to produce electricity and water.
What else can I help you with?
Organisms that use oxygen?
Aerobic organisms use oxygen.
What is the most common use for oxygen?
Aerobic cellular respiration is the most common use for oxygen.
What gas is a byproduct and is process plants use to make their own food?
oxygen
Does a plant use oxygen to make carbon dioxide during a photosynthesis?
No, they use carbon dioxide to make oxygen.
What is a metabolic waste of algae that can be recycled for use in cellular respiration?
Oxygen is the answer.
What is the one use for oxygen?
Oxygen does not have just one use.
Organisms that use oxygen?
Aerobic organisms use oxygen.
What historical report tell you The source of heat which started the fire or The fuel that burnt the fire or The supply of oxygen for the fire?
That the supply of oxygen for the fire
How do you use historical in a sentince?
The signing of the Declaration of Independence is a historical event. Some books have historical significance.
Why is the citric acid cycle called an anaerobic cycle when it does not use oxygen?
The fact that it does not use oxygen is precisely why it is anaerobic. Anaerobic means without oxygen. If it did use oxygen, it'll be called aerobic.
Do fish use oxygen or carbon dioxide?
Fishes use Oxygen in water. They absorb the absorbed oxygen through their gills.
What is the use of oxygen in Australia?
the same use of oxygen anywhere else in the world to breath it
What is the common use for oxygen?
Aerobic cellular respiration is the most common use for oxygen.
What do mammals use to get oxygen?
Their lungs process oxygen.
What is the most common use for oxygen?
Aerobic cellular respiration is the most common use for oxygen.
Do trees use or produce oxygen?
yes it prduces oxygen
How does oxygen use by animals?
Animals breathe in oxygen in the air.
