Hydrogen

Reagents 2,4-dichlorophenoxyacetic acid (2,4-D) (Sigma-Aldrich), 2,4 dichlorophenol (2,4-DCP) (Sigma-Aldrich), ferric sulfate (nH2O) (Carlo Erba), hydrogen peroxide (H2O2) (Carlo Erba), acetonitrile (Sigma-Aldrich) and Milli-Q water were used to perform all the experiments . All the reagents were used without further purification. Natural groundwater samples Samples were taken from groundwater wells localized in a small rural community (coordinates: 3º21’03.38” N, 76º26’24.51”) near to the…

completely combusted and emitted carbon dioxide plus water. Cyclohexene was an unsaturated hydrocarbon, it undergoes incomplete combustion (Clark, 2003) which showed the great intensity of light compared to hexane due to the higher ratio of carbon and hydrogen in cyclohexene. Black smoke that released during combustion of toluene indicated its aromatic identity.…

Water and ethanol both have dispersion forces and hydrogen bonding while kerosene only has dispersion force. It means to say that there is a greater energy needed in order to break the bond that holds the molecules together. In conclusion, intermolecular forces increase direct proportionally with increasing polarization. It should also be noted that the arrangement of the strength of intermolecular forces increase from dispersion, dipole-dipole, hydrogen bonding, to ion-dipole. Lastly, the…

many theories as to why and how we know. These theories consist of mainly the Big Bang Theory and how it had created the first and lightest elements in our universe, or Red giants(Dying stars) because as the dying star’s core begins to run out of hydrogen it begins to die and create carbon atoms as a result of it’s death, another piece of evidence we have on this topic is supernova’s because star releases a very large amount…

small alcohol. In both pure water and pure ethanol the main intermolecular attractions are hydrogen bonds. The energy released when these new hydrogen bonds form approximately compensates for the energy…

Introduction: Many chemical compounds are broken down into two very distinct categories: acidic or basic. Acidic, based on the Bronsted-Lowry Theory, is defined as a proton (H+) donor. An equation exemplifying an acid dissolving in water is: HCl (g) H2O H+ (aq) + Cl- (aq) A base, based on the Bronsted-Lowry Theory, is defined as a proton (H+) acceptor. An equation exemplifying a base dissolving in water: NaOH (s) H2O Na+ (aq) + OH- (aq) Molarity, also known as the concentration…

enter the house and allow the stale air to exit. The effects of VOCs can also be lowered by minimalizing exposure to these compounds. An example of a VOC is methanol, a substance which is toxic if ingested because it metabolises to form Formaldehyde (CH_2 O). Methanol (CH_3 OH) is most commonly found in products such as cigarettes as well as in foods or drinks containing aspartame, an artificial sweetener. Formaldehyde is another toxic VOC which can cause the development of cancer. Formaldehyde…

The Demise Of The Great “Hindenburg” T he era of the Hindenburg along with all other airships of it’s time came to an explosive end all in one unexpected day. Put that aside for now but I promise to readdress that topic soon enough, but first I shall explain it’s long journey to it’s inevitable destruction. The great airship that was given the iconic name of “Hindenburg” was constructed by America’s enemy at the time, Nazi Germany itself. First of all, you need to know that it was the…

Chlorine is the second to lightest member of the halogen elements. It is in Group 17 (Group VIIA) and period 3 of the periodic table. The element symbol for Chlorine is Cl. Chlorine is a greenish yellow gas that is corrosive, toxic and can be irritating to the eyes and respiratory system. Chlorine is a nonmetal that has the atomic mass of 35.45 amu. It has a melting point of -100.98 degrees Celsius and a boing point of -34.6 degrees Celsius. However, at room temperature it is a gas. Chlorine…

Fatty acids and oil are organic substances, which are composed of carbon, oxygen and hydrogen. When carbon, oxygen and hydrogen are chemically combined with a carboxyl group, a long chain is formed, called as fatty acids. Alternatively, when fats react with water, they break into fatty acids and glycerin. Three chains of fatty acids when react with glycerol molecule, they combine to form triglycerides. Molecules of triglyceride are the basis of fats and oil. The difference in their chemical…