The risks of using hydrogen are that it is extremely flammable. Hydrogen gas, because it is lighter than air, floats upward in the atmosphere. People once used it to lift zeppelins and other airships into the sky, allowing voyages by air. However, because the gas is so flammable, it caused many explosive accidents, including the Hindenberg explosion in 1937. Airships now use helium gas because it is nonflammable and therefore a safer lifting gas.
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Some uses of hydrogen are:.
• hydrogenation of fats and oils .
• methanol production, in hydrodealkylation, hydrocracking,.
and hydrodesulphurization .
• rocket fuel .
• welding .
• production of hydrochloric acid .
• reduction of metallic ores .
• for filling balloons (hydrogen gas much lighter than air;.
• however it is extremely flammable) .
• liquid hydrogen is important in cryogenics and in the study of .
• superconductivity since its melting point is only just above absolute zero.
Hydrogen, French for water-maker and from the Greek words hudar meaning water and gennen meaning generate was first recognized as a distinct substance in 1776 by Henry Cavendish. The gas was named hydrogen by a man named Antoine Lavoisier. .
In nature hydrogen is found in water. It is combined with oxygen particles to create h2o (water). Hydrogen is also found is most forms of organic matter which includes coal, fossil fuels and natural gas. .
Theses are the following ways that hydrogen can be obtained:.
• A steam reforming process is currently being used to produce hydrogen from such fuels as natural gas, coal, methanol, or even gasoline. To draw on renewable energy sources, the gasification or pyrolysis of biomass "organic material "can be used to generate a fuel gas that can be reformed into hydrogen. .
• The electrolysis of water produces hydrogen by passing an electrical current through it.
Due to this hydrogen must be purified for our usage. ... Hydrogen is thus called because water is generated, or born, by the combustion of hydrogen. Hydrogen's physical state is that of a gas. ... Hydrogen is a useful tool in our society today. ... Hydrogen is very useful but can also be dangerous. ...
Hydrogen bond is the forces of attraction between a Nitrogen, Oxygen or Fluorine atom of another molecule and the hydrogen atom attached in the molecule. ... This means that hydrogen will have a partial positive charge and the heteroatoms have a partial negative charge. ... Hydrogen bonding increases the strength between water molecules that is why water requires a lot of energy to raise the temperature compared to other fluids without hydrogen bonds. ... Luckily cohesion does occur due to the hydrogen bonding cohesive forces between the molecules aiding the transport of the water furthermor...
The articles about hydrogen fuel took approaches from many perspectives: health and wellness from improving the quality of the air, the dangerous hazards of hydrogen, the role of hydrogen in California's economy, and efficient ways to extract hydrogen using renewable energy. ... Hydrogen is very flammable but interviewers still believe that conventional fueling stations are just as unsafe as hydrogen stations. ... Along with being the first for producing a hydrogen fuel cell car, Honda also is the first to construct a hydrogen refueling station. ... The hazards of storing hydrogen are v...
Fourth, unlike today's motors, hydrogen fuel cells are 100% ecologically safe. ... Hydrogen fuel cells are the answer. ... Most of the criticism about hydrogen fuel cells will be concerns about its safety because as we all know hydrogen is explosive, more so than today's gas. ... There are many pro's about hydrogen fuel cells. ... Hydrogen is an unlimited resource for power if used in fuel cells. ...
Water consists of two chemical elements, hydrogen and oxygen. ... Hydrogen on earth is not a fuel. ... There is more hydrogen in gasoline than there is in liquid hydrogen. ... Electrolysis is not usually the best way to generate hydrogen. ... No hydrogen flame has the ability to truly melt tungsten. ...
Hydrogen is much more efficient and safer than the internal combustion engine. ... These aren't the first hydrogen powered cars, though. ... Purpose/Audience This informative paper about the use of hydrogen fuel cells in automobiles will examine a few of the advantages and problems of hydrogen fuel cells. ... It is difficult to release the hydrogen from hydrocarbons. ... It has seven weight-percent hydrogen compared to the two weight-percent that compressed hydrogen gas has. ...
Because of this, hydrogen has a major advantage over gasoline in that "hydrogen stores approximately 2.8 times the energy per unit mass as gasoline." ... "Special insulated tanks in the BMW's [Concept Hydrogen powered car] held 140 litres of hydrogen, enough to drive at least 300 kilometers. ... Furthermore, new methods of hydrogen production are being discovered which will help engineers find a way to produce the hydrogen within the automobile. ... The algae, in the presence of light and deprivation of sulfur, will produce the hydrogen at a rate of about three milliliters of hydrogen p...
A hydrogen fuel cell can act in many different ways as a complement or substitute to the grid. ... As of right now, the main source of the hydrogen used is in the form of natural gas. ... Hydrogen and other alternative fuels reduce ozone-forming tailpipe emissions. ... Of all the beneficial uses of Hydrogen, one of the most promising and exciting is its use in automobiles. ... Remarkably, the byproduct of using Hydrogen in cars is water. ...
Wild Bill's Wild Bohr Quiz Niels Bohr's model of the hydrogen atom, was the primary reason for the understanding of energy levels. Bohr was able to explain the bright line spectrum of hydrogen. ... Every hydrogen atom is made up of a single electron - proton system. ... In conclusion, since hydrogen atoms emit light energy in specific frequencies, the hydrogen atom must be within a specific energy level and nothing else. ... He then used mathematics to determine the different energy levels of hydrogen. ...
