Difference between revisions of "Hydrogen"
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==Biological significance== | ==Biological significance== | ||
| − | The metabolism of [[human|human beings]], [[:category:animals|animals]] and [[microbes]] depends on water, composed of hydrogen and [[oxygen]]. The human body contains about 70% water. Human beings need about 2 liters water per day for drinking, hard working people need even more. | + | The metabolism of [[human|human beings]], [[:category:animals|animals]] and [[microbes]] depends on water, composed of hydrogen and [[oxygen]]. The human body contains about 70% water. Human beings need about 2 liters water per day for drinking, hard working people need even more. Some organisms, [[Bioreactor#Xenotrophs|Xenotrophs]], can directly metabolize hydrogen as a source of energy. |
==Production== | ==Production== | ||
Revision as of 00:40, 27 July 2020
Hydrogen (periodic table symbol: H1) is a chemical element that can be found in the atmosphere and in frozen water on Mars.
Liquid hydrogen has a density of 70 kg/m3. Gaseous hydrogen at standard atmospheric pressure and temperature has a density of 0,089 kg/m3.
Biological significance
The metabolism of human beings, animals and microbes depends on water, composed of hydrogen and oxygen. The human body contains about 70% water. Human beings need about 2 liters water per day for drinking, hard working people need even more. Some organisms, Xenotrophs, can directly metabolize hydrogen as a source of energy.
Production
Hydrogen can be produced by electrolysis of water.
Use
- Hydrogen may be used directly as a fuel for a propulsion system, or, through the sabatier reaction, in the form of methane for the same purpose.
- Hydrogen can be used to react with iron ore or aluminium ore to create metals and water.
- Hydrogen can be combined with carbon to create carbohydrates, amino acids and hydrocarbons, the building blocks all all living organisms.
