Crystallization

have discovered hydrochloric acid, sulphuric acid, and nitric acid. He also discovered what is now called Aqua Regia, which is an acid that is so strong that it can dissolve gold. Another contribution he made was discovering procedures such as crystallization, distillation, and sublimation. Furthermore he made a classification system for identifying materials, the categories these materials…

of Al2O3 from the inclusions arising from (i) steelmaking processes and (ii) from the reaction between Al in the steel and the slag pool. The additional increased Al2O3 contents tend to change the mold flux properties in terms of viscosity and crystallization by the silicate structure. This maybe the reason of the mold flux works successfully on a particular caster, but fails to perform on a caster of a similar design utilizing liquid steel. The content of pickup of Al2O3 from the liquid steel…

Contrast and Comparison between Frog and Songbird Mating Calls By the law of the nature, most creatures seek to survive and reproduce. In other words, they reproduce to survive or to keep their species on living. In this research paper, I would compare and contrast the advertisement calls for mating between frogs and songbirds and talk about how the production of mating calls is related to Tinbergen’s four questions. Both anurans and passerines have calls. Also, males usually produce the mating…

Vocal Learning in songbirds is a form of communication to share information and the problem can be that it is difficult to know what is being communicated. What kind of information is being conveyed and it means? There is a distinct difference between songs and calls, specialized brain mechanisms for producing their vocalization mechanisms as well. Songs are very elaborate and learned by males for produced for mate attraction and defense announcement. Calls are simpler and innately learned vocal…

Stone Descriptions: Marble Marble is a metamorphosized sedimentary rock. Due to different crystallizations and impurities present over the millennia, marble comes in an infinite variety of color. For this reason, and given its preciousness, marble is generally used in construction for interior and exterior purposes. For similar reasons, we generally see this material in the form of slabs, and not as a structural building material. Marble is a relatively porous stone. This makes it easily…

Medicine has evolved greatly, especially in terms of drugs, but one of the basics is aspirin, also referred to as acetylsalicylic acid. There are many different reactions that can be conducted in order to synthesize aspirin. One way being the Fischer esterification, which is a reaction between an alcohol and a carboxylic acid within the presence of a catalyst, synthesizing an ester (Weldegirma, 2014). The catalyst has to be something that will provide the addition of a proton, such as a Lewis…

Humans are fickle creatures that are easily swayed by outside influences. However, conscience and morality often proves to be a more powerful motivator than money. In the world of science, the Curie family is a prime example of scientists who gave up money in order to benefit the greater good. Furthermore, Mahatma Gandhi represents the world leaders who chose to do the moral thing as opposed to one that would bring in more money. And lastly, in the novel To Kill a Mockingbird, Atticus Finch is…

At every barbeque, picnic, outing, or family get together, hot dogs are consumed. Millions of people adore hot dogs, and just cannot get enough of them. Millions are bought and devoured by the human race. They can be grilled or boiled, and then you can put ketchup, mustard, onions, and other delicious condiments on top. Most people are too busy adoring the food to ask, what is really in a hot dog? The first ingredient is mechanically separated meat. It is light pink and looks like strawberry…

the one of the ways of breaking and creating bonds in order to make aspirin. A series of steps is used to break bonds and create bonds, which is called a mechanism. As shown in Equation 2, the mechanism of synthesis of aspirin is shown below. Crystallization is used after a reaction is broken. Water is used due to the fact that recrystallization combines low temperature and hydrophobic effect. At the end of the reaction, the product is isolated by removing solvent by distillation and by…

The Liberty Hill pluton of South Carolina is one of twenty-four known granitoid bodies along the southern Appalachian Piedmont which possess the properties of a supergroup as described by Pitcher. The country rocks surrounding the plutons are at least mid-Paleozoic in age. Liberty Hill lies within country rocks of the Carolina Slate belt which consists of “primarily intermediate to felsic pyroclastic debris and hypabyssal intrusive bodies.” (Speer et al. 1980). The isotopic ages of…