Organic compound

This experiment demonstrated how to determine the freezing point and purity of an unknown organic compound. In general, the freezing/melting point is the temperature at which the freezing point (solid phase) and the melting point (liquid phase) meet. When an organic substance does not contain any impurities, it will melt at a specific single temperature. However, when impurities are present, they will concentrate within the liquid as it is freezing, causing a decrease in the freezing point and widening the melting/freezing range. Since unknown #5 did not melt in the ice-water bath, which was a temperature of 0oC, I made a salt-ice-water bath. Just as when impurities found in a substance depress the freezing point, adding sodium chloride…

Those chemicals that we negligently throw out could end up harming our ecosystem. According SFGate.com, “The U.S. Environmental Protection Agency names phosphorus, nitrogen, ammonia and chemicals grouped under the term "Volatile Organic Compounds" as the worst environmental hazards in household cleaners” (Davis). To determine what the potential damage may be caused on plants, my partner Sam and I studied the growth and development of plants when exposed to harsh cleaning chemicals. I…

air quality is pests. Dust mites and fragments of cockroaches are part of common household dust. Dust is easily disturbed by even the smallest movement, causing it to float in the air until it is inhaled or lands on another surface. Dust mites live off the dead organic material found in dust and contain an enzyme that, when in contact with humans, causes allergic reactions. Dust mites do not bite humans. Similarly, cockroaches contain a protein that initiates allergic reactions…

Abstract- this paper presents OLEDs (Organic Light Emitting Diodes).How they work, what they are prepared of, and different policies to manufacture them with layers thicknesses, and the many functions for them. OLEDs function as both light source and color array at the same time; they are used to generate digital displays in devices. Due to their early stage of improvement, they normally release fewer lights per unit area than inorganic solid-state based LED point-light sources.…

Arsenic exists in the environment in many different forms, each of those forms having different chemical abilities that have the potential to influence human health (Lynch, 2014). Arsenic has the potential to impact human health and has been studied over the centuries (Lynch, 2014). The research that has been studied has determined that the chemical form of arsenic found in food products characterizes over 20 different arsenic species (Lynch, 2014). The focus on organic and inorganic arsenic has…

In a hydrothermal vent, life would have a continuous energy source and an abundance of biologically important elements. It is believed that hydrothermal vents during Archean Earth are nearly identical to modern hydrothermal vents (Baross and Hoffman, 1985). As a result, hydrothermal vents would be able to provide a continuous energy source to the first cells, protocells because modern hydrothermal vents are able to generate a continuous source of energy. In addition, it is believed that…

It is no secret that we are on the verge of making both technological and biological progress. Imagine a scenario in which you were fighting for your country or perhaps your family and unfortunately you lost your arm, your leg, or even part of your face. Today, we see these losses as needing a prosthetic, which is a device that is made from plastic or metal that takes the place of the body part that was lost in order for you to maintain a proper functionality within society. I think a better…

Eyonna Knighten October 10, 2015 Lab 4: Midterm Introducing Salicylic Acid into and Organic Compound Purpose The purpose of this experiment is to perform acetylation of salicylic acid. According to Ervy et al. (2010).“Salicylic acid is both a phenol and an aromatic carboxylic acid” (Introduction section, para. 2.). Once the experiment is performed a TLC, melting point, and percent yield will be determined and calculated. The product will also be analyzed via IR spectra and NMR.…

Introduction: DNP and research question The organic compound 2,4-dinitrophenol (DNP) is a crystalline solid with the molecular formula C6H4N2O5. The molecule is soluble in water to some extent and is fully soluble in sodium and potassium hydroxide solutions. The compound can also be explosive. It is usually used in dye, weed killers, wood preserver, photographic development among other things and it has even been used as a weight loss agent. In fact, it has been claimed to be the king of the…

Extraction was the main method of removing compounds from the sample. The component X was removed from the sample by first adding the organic solvent dichloromethane to the test tube. After aggravation, the component X dissolved into the solvent. Since components Y and Z were insoluble in the organic solvent they remained as solids. The test tube was then placed into a centrifuge and ran for thirty seconds. By doing so, the unsettled solid were forced to accumulate at the bottom of the test…