Chlorine

PAST: The United States Chemical Corps begins its lineage in World War I. During this conflict, trench warfare was the primary means of gaining ground and remaining protected on the war front. In order to combat the long and tiring battles of trench warfare, axis powers began using chemical weapons to draw allied forces out of the trenches or to kill them with the effects of the chemicals themselves. After these types of attacks became more relevant within World War I, the U.S. developed the…

Recently in class we have watched other scientists conduct experiments and show how six elements ( Lithium, Sodium, Potassium, Rubidium, Cesium, Francium ) reacted if they were added to water. Each scientist had did this experiment on each element except Francium so, we inferred that Francium had the worst reaction and must be dangerous. So because of curiosity, we have conducted the same lad to see how these elements reacts ourselves. In this lab, my group and I had to examine chemical…

Adding distilled water to this mixture will eradicate any traces of salt (sodium ethanoate and sodium sulfate) and remaining soluble impurities when it is discarded (AUS-e-TUTE. 2015.) Any remaining traces of ethanoic acid and sulfuric acid is neutralised by sodium carbonate (as shown in equation 1) (Fischer esterification reaction), which is converted to soluble sodium sulfate, sodium ethanoate and carbon dioxide which is released by inverting the separating funnel, and opening the tap.…

The WWI gas mask emerged out of desperation as a result of the use of chemical weapons in the war of attrition that was World War I. The gas mask was not only a lifesaving invention, but it is symbolic of the fear that the threat of chemical warfare had on society. The gas mask was developed directly to combat the morally questionable act of using chemical weapons on the battlefield alongside with the intention of saving soldiers and civilians from dying in a gruesome and ‘inhumane way’ (Slotten…

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…

The Old Lie: Dulce et Decorum Est Wilfred Owen had experienced first-hand the horrors of World War One, and watched as countless young lives were slaughtered believing “The old Lie: Dulce et decorum est” (27), that it was sweet and fitting to die for one’s country. He wrote the poem Dulce et Decorum Est to clearly refute the message espoused by many, that war is glorious, by bringing to life the horrors of warfare through vivid imagery. This was accomplished by exposing the gruesome conditions…

Introduction Unknown substances can be found everywhere. Whether it is the mysterious crust on the desk, or the sticky material found at the bottom of an unwashed bowl, there is a curiosity as to what that substance could be. In science, the unknown substance is called the analyte (1). The unknown substance, taken from the Gulf of Mexico, is tested to determine the true identity of the substance. In order to find the analyte, there are two different scientific methods that can be applied. The…

I remember that I had seen such a public service advertisement on TV. The first is a water tap on the screen, it is flowing out of the clean and transparent water, later faucet water turbidity, and speed of the water a lot slower. Then, the water became dripping. In the end, an eve appears on the screen, out of a tear, and displays a line of word. “If human do not cherish the water, the last drop will be their own tears.” Harmony within diversity just like the relationship of water with human…

The unique composition and purity of as-deposited SnS2 thin films prepared with different precursor solution volumes from 5 ml to 25ml were determined by EDX analysis as shown in fig 5, which brought out the presence of Tin and Sulfur as elementary components. Two different peaks were observed in the spectrums from fig 5 relevant to the tin and sulfur. The EDX spectra show that the weight percentage for the film prepared at the precursor solution volume of 5 ml is 36.8% and 63.2%, which is…

Destin Briggs Lu Jack Chem 4235 11/4/2017 Original Synthesis of Cadmium Nitrate Tetra-Hydrate Cadmium nitrate tetra-Hydrate is an inorganic compound from the family of compounds with the general formula Cd (NO3)2.XH20, where X=4, hence the molecule has four molecules of water of crystallization in its structure. It exists as a salt but in its anhydrous state, it is known to be a volatile substance. It is a colorless substance as are all the compounds in the family of cadmium nitrates. Cadmium…