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Myeong-dong [a] (Korean: 명동; lit. 'bright neighborhood') is a dong (neighborhood) in Jung District , Seoul , South Korea between Chungmu-ro , Eulji-ro , and Namdaemun-ro . Myeongdong is known for being one of Seoul's main shopping, parade route, and tourism districts. [ 1 ]
Hydrogen peroxide is a chemical compound with the formula H 2 O 2.In its pure form, it is a very pale blue [5] liquid that is slightly more viscous than water.It is used as an oxidizer, bleaching agent, and antiseptic, usually as a dilute solution (3%–6% by weight) in water for consumer use and in higher concentrations for industrial use.
Food truck: Recently, food trucks have become a new trend in food culture. In Korea today, the food truck is a popular purveyor of street food, prevalent in parks and culture-art spaces. [9] Street food in South Korea. Food bike: It is called a food bike because food is sold from a bicycle; pedal propelled, or motorised ifa tricycle.
Accelerated hydrogen peroxide (AHP) is a trademark [a] for solution of hydrogen peroxide whose antibacterial efficacy is enhanced by a surfactant and an organic acid. [ 1 ] [ 2 ] It is also a disinfectant / cleaning agent that stabilizes hydrogen peroxide so that it can be used for extended periods of time.
Oxygen and the organic phase react under formation of the anthraquinone and hydrogen peroxide. Among other alkyl groups (R) ethyl-and tert-butyl-are used, e.g., 2-ethylanthraquinone. [2] [3] The hydrogen peroxide is then extracted with water and in a second step separated by fractional distillation from the water. The hydrogen peroxide ...
Exit 8: Myeongdong, KEB Bank Exit 9: Gyesung Girls' High School, Myeongdong Cathedral, Elcanto Exit 10: Jungbu Police Station, Sejong Hotel, National Health Insurance, aik Hospital [ 4 ]
Then, a catalyst, often around 10 ml potassium iodide solution or catalase from baker's yeast, is added to make the hydrogen peroxide decompose very quickly. Hydrogen peroxide breaks down into oxygen and water. As a small amount of hydrogen peroxide generates a large volume of oxygen, the oxygen quickly pushes out of the container. [6]
Hydrogen peroxide works best as a propellant in extremely high concentrations (roughly over 70%). Although any concentration of peroxide will generate some hot gas (oxygen plus some steam), at concentrations above approximately 67%, the heat of decomposing hydrogen peroxide becomes large enough to completely vaporize all the liquid at standard pressure.
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