Crystal City

phosphoric acid would catalyze the reaction and water would be added to decompose the remaining acetic anhydride. Through the process of filtration, aspirin crystals were collected and separate from the liquid acetic acid-water solution. Lastly, the product was weighed and tested for purity. The experimented resulted in the production 3.68 g of aspirin crystals which had a little impurity. This report discusses an experiment to study the synthesis of a drug from organic material. The experiment…

minimum amount of boiling hot solvent, filtering insoluble impurities while the solution is hot; crystallizing the purified compound, and isolate the pure compound by vacuum filtration . The unknown used in the experiment was #4, which were white crystals. In order to determine the ideal solvent we prepared two test tubes. Test tube #1 containing 0.106g of unknown and 3mL of water, it was well mixed. At room temperature water dissolved a small amount of the solute while boiling hot it was…

I. Diamonds are crystals made of a chemical called carbon. They are the hardest known natural material in the world, and one of the most valuable. In the Greek language, the word diamond means indestructible. It is possible to create diamonds with carbon and by applying extreme heat and pressure. Diamonds are measured in carats; one carat is two-hundred milligrams. Diamonds are better conductors then any other metal in the world, four times better than copper. Time, money, and extreme heat and…

rack and then 2 minutes in an ice-bath to allow for complete crystallization. The crystals were then put through the filtering apparatus to collect and dry all the crystals. About 3ml was used to rinse the crystals while in the apparatus. The crystals were then dried and the yield and melting point were taken. Results • Maleic anhydride = 0.4g (0.004 moles) • Ethyl acetate = 1ml • Hexane = 2ml + some to rinse crystals • Cyclopentadiene = 0.4ml (0.0048 moles) • Filter paper before = 0.18g…

Crystals form when a type of liquid cools down, and then hardens. The process when crystals grow is called "nucleation". Whenever a person eats salt, they are eating salt crystals. These crystals are called salt crystals. To make homemade salt crystals, the materials you need are hot water and salt. When dissolving salt in water, the salt is not changing its properties. This project will use different types of waters to see how many more crystals it will help grow. Dasani water is a brand of…

structure with space group P6422 (group no. 181), in which iron, phosphate and oxygen occupy Wyckoff position 3d, 3c and 12k respectively. 2. Crystal chemistry and…

them at their best. One of the main problems faced with freezing is a change in texture. When frozen water expands and can cause tissue damage. When the food is thawed it will be mushy and soft because of the tissue damage. When frozen slowly larger crystals will appear and cause more tissue damage. When frozen quickly the ice…

sample was 3.41. Crystal Geyser water had a 16.42 ppm of CaCO3 in the first trial, 21 ppm in the second trial, and 22 ppm in the third trial. The standard deviation of the third sample was 2.97. According to the table provided, 0-50 CaCO3 ppm is considered soft water, 51-150 CaCO3 ppm is moderately hard water, 151-300 CaCO3 ppm is hard water, and anything above 300 is very hard water. All of the water that was sampled during this experiment is considered soft water. The Crystal Geyser water…

Fallingwater and Crystal Palace are two different buildings more than 100 years apart in architecture. These buildings have both made it through history of architecture by two famous architects Frank Lloyd Wright and Joseph Paxton. Their buildings display their sensitiveness to the natural environment. Also, how the compromises of these two buildings were based on their materials. Frank Lloyd Wright, Fallingwater, 1936, concrete, steel and stone, 5,330 square ft . This building is fascinating,…

In 1851, England hosted the Great Exhibition to showcase the might and power of the British Empire. It was such a special occasion that the home of the exhibition, the Crystal Palace, was designed specifically for the event (Keach 602). The Great Exhibition considered the first World’s Fair, a large event presented to the public to show items and ideas from all over the globe (“World’s Fair”). Reading about this grand event makes me wonder about the public and how in awe they must have been from…