Thin Layer Chromatography Introduction Thin Layer Chromatography or TLC is a technique used as a separation and identification technique. There are many forms of chromatography‚ but one thing that remains constant throughout all of the types of chromatography is that there is a stationary phase and a mobile phase. In the case of TLC the stationary phase is the silica gel on the TLC tray. Procedure Chromatograph method is a method of separating mixtures of two or more compounds. Two phases
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Unit 7 Subnetting Lab 7 Read the lab details listed below‚ and then answer the questions listed in the lab exercise. CIDR (Classless InterDomain Routing) and VLSM CIDR (Classless Inter-Domain Routing) was introduced in 1993 (RCF 1517) replacing the previous generation of IP address syntax - classful networks. CIDR allowed for more efficient use of IPv4 address space and prefix aggregation‚ known as route summarization or supernetting. CIDR introduction allowed for: • More efficient use
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Substance Volume the amount of space an object takes up cm3 mL Measuring Volume Directly Calculating Volume by Formula Water Displacement Method for Small‚ Irregularly Shaped Objects Water Displacement Method for Large‚ Irregularly Shaped Objects Density Mass the amount of matter in a given space g/cm3 g/m L D=M/V amount of matter in an object Matter-is anything in the universe that has mass and takes space Triple Beam Balance-measures the mass of an object Finding Mass Directly 1. Zero out
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<b>The Greenhouse Effect</b> <br>The earth’s climate is predicted to change because human activities are altering the chemical composition of the atmosphere through the build up of greenhouse gases primarily carbon dioxide‚ methane‚ and nitrous oxide. <br> <br>Energy from the sun drives the earth’s weather and climate‚ and heats the earth’s surface. This causes the earth to radiate the energy back into space. Atmospheric greenhouse gases (water vapour‚ carbon dioxide‚ and other gases) trap some
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Use Word’s Replace to transpose a column of names Available from:http://blogs.techrepublic.com.com/msoffice/?p=4156 Date: November 22nd‚ 2010 Author: Susan Harkins Category: Microsoft Word You’ll often see a column of names entered in a Word document either as a list or part of a table. Listing the names is no problem‚ but changing their order after they’re entered could be. For instance‚ let’s say your document contains a list of names entered in firstname lastname format‚ but you want them
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The Potential Effects of a Depleted Ozone Layer - Detrykowski "And God said‚ let there be light and there was light and then God saw the light‚ that it was good " ( Genesis 1: 3-4 ). Undoubtedly‚ light is good. Without light man could not survive. Light is the ultimate cosmic force in this universe allowing man to progress and flourish. In the form of heat‚ light from the sun warms the Earth. Light‚ also‚ is the single most important factor influencing the growth and development of plants
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Additive layer manufacturing for aerospace parts ES Technology Additive layer manufacturing ES Technology has revealed that additive layer manufacturing (ALM) for direct part production has been embraced by a number of manufacturing sectors‚ not least the aerospace industry The ability to produce components in a range of materials including hot-work steels‚ stainless steel‚ cobalt chromes and Inconel‚ plus titanium and aluminium alloys‚ presents the aerospace industry with large potential for
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‘A squirrel dying in front of your house may be more relevant to your interests right now than people dying in Africa.’ * Mark Zuckerberg‚ Facebook Founder. The phenomenon of the personalization of the internet is all around us. Sites such as Google‚ Facebook and Yahoo are adapting their results for each individual. This is a major step forward and we’ve only just come across it. For example‚ let’s take Google. When you type your required search in the toolbar‚ Google gives you the links
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CHAPTER 7 THE VALUATION AND CHARACTERISTICS OF BONDS PROBLEMS Assume all bonds pay interest semiannually. Finding the Price of a Bond – Example 7.1 (page 306) 1. The Altoona Company issued a 25-year bond 5 years ago with a face value of $1‚000. The bond pays interest semiannually at a 10% annual rate. a. What is the bond’s price today if the interest rate on comparable new issues is 12%? b. What is the price today if the interest rate is 8%? c. Explain the results
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The significance of the title in decoding what is in the artist’s mind lies in the little details in the painting itself. The noun “layers” indirectly draws the viewer towards a picture covering a piece of material -- the tudung. What then does the title represent? It seemingly explains about the lessons that the artist had to learn or is in the process of learning while discovering
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