Hydrogen cyanide

2.1 New semi empirical formula for of mass attenuation and energy absorption coefficients Most of the tissues of human organs consisting of elements such as H, C, N, O ,Ca ,P, Na, Mg, S, CI ,K ,Fe and I in their elemental composition. We have studied the variation of mass attenuation and energy absorption coefficients with atomic number at different energies for the elements which are constitutes of tissues of human organs. It has been proposed the empirical relations for mass attenuation and…

Therefore, the structural and optical characterization of prepared samples was carried out by using these instruments. 3.2 Synthesis of ZnO Nanostructures ZnO nanoparticles were prepared by using the following reagents : Starch solution Zinc nitrate hexahydrate {Zn〖(NO_3)〗_2 .6 H_2 O} Sodium hydroxide { NaOH) Freshly prepared ammonia solution. In order to prepare 0.01M of ZnO nanoparticles, the following steps were followed: The 0.01 M of Sodium hydroxide { NaOH}…

TITLE: INTRODUCTION: Alka-Seltzer is used to reduce pain, inflammation, heartburn etc. It is an antacid. When it is dissolved in water, it produces carbon dioxide filled air bubbles. It is represented by CO2.(1) Alka-Seltzer consists of citric acid and aspirin. Bicarbonates are formed when the tablet is dissolved. When it is mixed with citric acid, then the acid reacts with bicarbonates and water, carbon dioxide are formed.(1) When Carbon and oxygen bonded, then carbon dioxide gas is…

Methane gas has numerous uses in its natural gaseous form. It is one of the best fuel sources and due to its abundance it has promising benefits as compared to the oil gases whose prevalence is limited making them more expensive. However, a major hiccup exists in its storage and transportation since the most conveniently used form is its liquefied form. This issue has for limited the volumes transported for the long time since the liquid occupies much more space as it could in a powder form. In…

Experiment Summary The purpose of this experiment was to determine the copper content of brass using iodometry. This was accomplished by creating a thiosulfate solution and standardizing it by titrating using a known amount of KIO3. The second part of the experiment involved preparing a brass sample and allowing copper to react with excess iodide to form I2. The resulting I2 was then titrated with the thiosulfate standard. Both the molar concentration of thiosulfate and the weight % copper…

burning. However, in case water is used when removing the residues even after several days, the fire may reignite. The water will firstly expose the surface of the magnesium residues to reaction and react with it (magnesium) to release flammable hydrogen gas hence reigniting the fire. The fire will be accelerated by the oxygen in the air making it more intense and dangerous. The more the surfaces of the magnesium are exposed the higher the intensity of the fire. It is advisable not to use water…

dependant and creates variable charges. These are created from the dissociation of the hydrogen ion in organic matter, and hydrogen ions being added and removed of the alcohol (OH) group on mineral surfaces. The amounts of charge changes due to the pH, as the concentration of hydrogen and hydroxide ions determine the pH. This relates to soil solution acidity. How acidic the soil is shown by the concentration of hydrogen ion there are within the solution. Therefore, the higher concentration of…

“The Law of Conservation of Mass states that matter can be changed from one form into another, mixtures can be separated or made, and pure substances can be decomposed, but the total amount of mass remains constant.” (University Of Wisconsin) The data the was found from our lab shows that the data is not consistent to the Law of Conservation of Mass because our results showed an increase in mass. To start the lab, .7 grams of copper was measured out and at the end, the total amount of copper was…

temperature. Water is a compound containing 2 hydrogen atoms, but also has an oxygen molecule as well this means it has the molecular formula of H2O. The relative atomic mass of water is around 18 with “11.188% being hydrogen and 88.182% being oxygen” [1]. When bonded it forms a covalent bond, “each hydrogen atom shares an electron with the oxygen atom” [2] but these electrons are not held in equilibrium. An oxygen atom attracts the electrons more than the hydrogen atom. This is because of the…

There are numerous scientists who have positively impacted the field of Chemistry; from Robert Bunsen to George Washington Carver, chemists have and continue to shape the publics knowledge of Chemistry. However, one chemist stands out from all the rest because of his historical, societal, and person significance: George Claude Pimentel. Pimentel’s life, work, and contribution to Chemistry have shaped this field and impacted it in ways that other scientists have not. Background George Claude…