Essays Tagged: "Hydrogen"


imilar composition to Uranus andis close in mass to Uranus. Its thick atmosphere made of hydrogen, helium,and some methane and ammonia, gives it a bluish color.DISCOVER ...

(5 pages) 142 0 4.6 Jan/1996

Subjects: Science Essays > Astronomy

report on redgiants and typeII supernovae

he red colour increases causing the star to expand increasingly.Red giants occur as a result of the hydrogen in the core running out. This means that the hydrogen burning can only continue in the oute ...

(2 pages) 50 1 3.6 Apr/2002

Subjects: Science Essays > Astronomy

Tjis essay explains the evolution of the atomic theory and how it has changed over the last cenutry or so.

that elements combinein specific proportions because they are made of individual atoms. Forexample, hydrogen and chlorine always combine in a specific proportion tocreate hydrochloric acid. Dalton tho ...

(2 pages) 48 1 3.0 Jun/2002

Subjects: Science Essays

Hydrogen: the fuel of the future

he really liked it. he said it showed "original thoughts and opinions" .....i was just venting.....HYDROGEN: THE FUEL OF THEFUTUREBy: JsonWhy are we as Americans so afraid to change? even if it is a ... . so why do weput up with the inefficiency when there are far better alternatives out there? Such ashydrogen, which was discovered hundreds of years ago. Hydrogen has long been knownfor its explosive ...

(5 pages) 149 0 4.0 Jan/1996

Subjects: Science Essays > Environmental Science

Death of a Planet

rocarbons are organic compounds ,a combination of twoor more elements, that contain only carbon and hydrogen (2 factsheet, OMS-5). Hydrocarbonsare released when fuel in the engine burns partially. Whe ...

(5 pages) 127 0 4.3 Nov/1996

Subjects: Science Essays > Environmental Science

The Reactivity of Metals and Their Discovery

on Metals. In Group I, these are the most reactive elements; there are mostly all metals except for Hydrogen. In Group II, there are only metals, and then there are the Transition Metals, which are, o ...

(7 pages) 69 0 2.4 Nov/2002

Subjects: Science Essays > Chemistry

EN rapport om natron. Med forsøg beskrivelse, statestikker, reaktions skeamer, tabeler, fackz og en del andet

lbage efter forsøget er udført.Hvad er natron?Natron/ NaHCO3 også kaldet Natriumhydrogencarbonat , består af følgende stofferNa (Natrium), H (hydrogen), C (Carbon) og ... is en natriumforbindelse?Vi har stoffet NaHCO3, som består af disse stoffer: Na (Natrium), H (hydrogen),C (Carbon) og O (Oxygen). Og så ved ophedningen af NaHCO3 Forsvinder alle gaserne H ...

(2 pages) 35 0 2.7 Nov/2002

Subjects: Science Essays > Chemistry

Proteins, their uses, structure etc.

connective tissues.All proteins are combinations of about 20 differing amino acids each combined of hydrogen, carbon, nitrogen, oxygen and occasionally sulphur. The amino acids form peptide bonds betw ... he primary into the 3d forms of the alpha helix and the beta pleated sheet. This shape is formed by hydrogen bonding between the molecules, and it is this hydrogen bonding which is also responsible fo ...

(3 pages) 116 1 3.5 Feb/2003

Subjects: Science Essays > Biology

The Issue of Freedom.

n kind has been fighting against anything which is an obstacles by using swords, shields, and, now, hydrogen and nuclear bombs, with seriously destructive power and influence. Warmongers are convinced ...

(5 pages) 85 0 3.0 Apr/2003

Subjects: Social Science Essays > Anthropology

Haber Process.

e, a German chemist named Fritz Haber examined the direct combination reaction between nitrogen and hydrogen, a reaction that forms ammonia.If we decrease the concentration of ammonia in the system, t ... en that would be a stress. The system will have to respond in order to undo the stress of increased Hydrogen. The forward process uses up Hydrogen and Nitrogen while the reverse process increases the ...

(2 pages) 64 1 3.3 Jun/2003

Subjects: Science Essays > Engineering > Chemical Engineering

Can life exist without enzymes?

a globular protein. Its basic unit is the amino acid, made up of the elements Carbon, Nitrogen and Hydrogen. Each enzyme has a specific 3-dimensional configuration, and an active site specific to the ... synthesize ATP. In chemiosmosis, the enzyme ATP synthase synthesizes ATP from the exergonic flow of hydrogen ions. In glycolysis, enzymes like pyruvate kinase catalyse the formation of pyruvate (respi ...

(8 pages) 92 0 4.0 Jun/2003

Subjects: Science Essays > Biology

Fuel cell technology and automobiles.

ontinuously, cuttingthe amount of fuel needed. The basic elements needed for a fuel cell to work arehydrogen and oxygen, making the chemical emission basically water vapor.Many companies and agencies ... ince thegovernment has already implemented a ten-year research and development plan to work out the hydrogen refinement and storage issues, it is definitely in our future. Within fifty years, the enti ...

(3 pages) 132 0 4.5 Jul/2003

Subjects: Science Essays > Environmental Science

Red Giant Stars.

The red color increases causing the star to increasingly expand.Red giants occur as a result of the hydrogen in the core running out. This means that the hydrogen burning can only continue in the oute ...

(1 pages) 43 0 4.6 Sep/2003

Subjects: Science Essays > Astronomy

Chemical and Physical Matter and its Properties.

ater is an example of a compound because it is one of many compounds that consist of molecules. The hydrogen and oxygen molecules are chemically bonded to form a water molecule.Properties and Changes ...

(3 pages) 85 2 4.3 Oct/2003

Subjects: Science Essays > Chemistry

The Fragile X syndrome and Duchenne muscular dystrophy (DMD) disease comparation

split into 23 pair's chromosomes (DNA), which are coiled in a spiral ladder type through nucleotide hydrogen bases (cytosine-c, guanine-g, thymine-t, adenine-a) (fig1 below). Human cells have 46 chrom ...

(14 pages) 88 3 2.4 Nov/2003

Subjects: Science Essays > Biology

How did the planets of the solar system come about? How did the atmosphere change and evolve through time? What where the major geological and biological events of Earth history?

solar system formed at the same time.About 5 billion years ago a huge cloud of gasses consisting of hydrogen and helium began to gravitationally contact, forming into a flat disk shaped material calle ...

(2 pages) 86 0 3.0 Nov/2003

Subjects: Science Essays > Earth Sciences > Geology & Geosciences

Proving the Exstance and current theorums of the "black hole"

pressure created by its fuel keeps the star from collapsing in on itself, but since it runs out of hydrogen, it collapses on itself and becomes so small it literally disappears from the universe. The ...

(5 pages) 108 3 4.0 Dec/2003

Subjects: Science Essays > Environmental Science

What are the Causes and Effects of Interactions Between the Solar Wind and Planetary Bodies?

und 4.6 billion years ago it has been the ultimate source of energy and light on Earth. Made of 73% hydrogen, 25% helium and around 50 other trace elements and radiating 4 x 1026 watts of energy every ... ten rock-iron mixture, Jupiter and Saturn, have such great interior temperatures and pressures that hydrogen acts as electrically conductive, and Uranus and Neptune have a mixture of water, ammonia an ...

(12 pages) 33 0 2.6 Feb/2004

Subjects: Science Essays > Earth Sciences

Why we depend so much on Water

it can mean different things in different situations. In chemistry, water would mean H2O, two part hydrogen and one part oxygen. In biology water would be a polar compound molecule with an uneven pat ...

(2 pages) 60 0 4.1 Feb/2004

Subjects: Science Essays > Earth Sciences

Anti-Matter: An essay on it's research and properties

f experiments which they believe will lead to the creation of the first anti-matter element -- Anti-Hydrogen. The Research Early scientists often made two mistakes about anti-matter. Some thought it h ... near the speed of light, is neccesary so that they have a chance of meeting and combining into anti-hydrogen. The problems with research in the field of anti-matter is that when the anti-matter elemen ...

(5 pages) 40 0 3.0 Mar/2004

Subjects: Science Essays > Physics