COLUMN AND THIN LAYER CHROMATOGRAPHY Mark Paul P. Pastrana‚ Mariah Ericka M. Patawaran‚ Princess Juneire M. Peligro‚ Francisco Q. Pua III‚ Rose Anne L. Quyo and Janille P. Ragpa Group 8 2B Medical Technology Organic Chemistry Laboratory ABSTRACT The main objectives were to separate the colored components of malunggay leaves by means of column chromatography‚ as well as to determine the purity of the components using thin layer chromatography (TLC) and measure the Rf values of the colored
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I am not sure why‚ but I seem to be one of those people that always gets bit up by bugs‚ even when no one else is. I can be in a group of 5 or 6 other people and I will seemingly be the only one. I must taste really good. It must be all that healthy‚ real food! After getting bit up pretty good‚ the first few weeks of summer‚ I was determined to do some research and make my own homemade insect repellent spray. There are many essential oils‚ known for being excellent natural insect repellents.Here
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Question 2 Exchange Control refers to governmental regulation of the conversion of currencies‚ the purchase of foreign coin or gold‚ and the transfer of funds between countries . Common exchange controls include banning the use of foreign currency and restricting the amount of domestic currency that can be exchanged within the country. Exchange Controls impacts on the economy include the following; The downward trend of rate of exchange against major trading currencies; this control lead
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What is Stock Exchange? A stock exchange is the market place for the purchase and sale of second hand securities. It provides "trading" facilities for stock brokers and traders‚ to trade shares of the listed companies and other financial instruments such as Term Finance Certificates and Derivatives. Stock exchanges also provide facilities for the issue (listing)‚ redemption (delisting) of securities and other capital events including the payment of income and dividends. It is a key institution for
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Columbian Exchange has been one of the significant events in the history of world ecology‚ agriculture‚ and culture. The term is used to describe the enormous...Premium Columbian Exchangeand David Northrup. The Earth and Its People. 3rd ed. Vol. 2. Boston: Charles Hartford‚ 2005. 418-573. 4."The Columbian Exchange." Calstatela.edu. 18 Feb. 2006...Premium Columbian ExchangeAmerica weather the Europeans came or not. This is the only negative affect that occurred out of the Columbian Exchange. Europeans
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about the exchange rates‚ which is useful for international finance assignment. Exchange Rate is the price of one country’s currency in terms of another country’s currency; the rate at which two currencies are traded for another. It measures the number of units of one currency which exchange‚ in the foreign exchange market for one unit of another. Exchange rates are important because‚ they establish the relationships between the different currencies or monetary units of the world. Exchange rates have
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Costs for the Benefits The Colombian Exchange’s forward approach included the exchange of new foods‚ animals‚ and resources between Europe‚ the Americas‚ and Africa. However‚ there was an indirect exchange of diseases‚ weapons‚ ideas‚ and people. This process had both positive and negative side effects. The Colombian Exchange resulted in an overall definite benefit compared to its costs. These benefits would include the sugar production‚ a financial silver income‚ the impact of nutritious foods
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The Columbian Exchange is one of the most significant results of the Age of Exploration and the First Global Age. Food products‚ livestock and diseases are but three elements of the Columbian Exchange. As Columbus "discovered America" and Western Europe discovered the various economic opportunities available in the New World‚ agricultural exchanges between the two regions led to exchanges of other items. Within decades of Columbus’ voyages‚ the trans Atlantic slave trade had begun and hundreds
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SERVICES OF THE STOCK EXCHANGES 1. SERVICES OF THE INVESTORS Inventors in the country are important component of secondary market. In stock market stock exchange provides the following services to their investors: Liquidity to their investment is ensured by enabling them to sell securities whenever they need liquid funds. Information about the price of securities listed on the exchange through daily quotations. Safety & security to the transactions entered into by the investors in the market
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1. If the exchange rate value of the CAD goes from USD 0.60 to USD 0.80‚ then the CAD: A)depreciated and Canadians will find U.S. goods more expensive B)depreciated and Canadians will find U.S. goods cheaper. C)appreciated and Canadians will find U.S. goods cheaper. 2. The exchange rate for Japanese yen (JPY) per euro (EUR) changes from 98.00 to 103.00 JPY/EUR. How has the value of the EUR changed relative to the JPY in percentage terms? 3. The exchange rate for Australian dollars per British
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