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    Chem220 Manual 2012

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    in the lecture course‚ and to familiarize you with the principles employed in identifying a simple organic compound. Occupational Health and Safety Notices The Elements 1. Nitration of acetanilide 2. Hydrolysis of p – nitroacetanilide and thin layer chromatography 3. Separation of a three – component mixture by extraction 4. Completion of experiments from day 1 to 4 5. NMR workshop 6. Sandmeyer Reaction: Preparation of p-chloronitrobenzene 7. Synthesis of benzilic acid from

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    it104 Assignment 1

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    | Details of what a networking technology does‚ and how it does it | What is a de facto standard and what stanards-setting body creates them? | An informal standard‚ no company governs them | What are some reasons TCP/IP model is divided into layers? | Troubleshooting‚ Creation of network standards and protocols | Why is the TCP/IP model considered an "open" networking model? | It’s not owned by any specific organization | what do routers in a network do? | Mave data between LANs by linking

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    Chapter 1. The TCP/IP and OSI Networking Models Page 1 of 22 Chapter 1. The TCP/IP and OSI Networking Models This chapter covers the following exam topics: Operation of IP Data Networks Recognize the purpose and functions of various network devices such as Routers‚ Switches‚ Bridges and Hubs. Select the components required to meet a given network specification. Describe the purpose and basic operation of the protocols in the OSI and TCP/IP models. Welcome to the first chapter in your

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    connected to a common medium | b. Node | d. A layer of the Open Systems Interconnection (OSI) model that frames upper-layer data and controls how data is placed on a medium | c. Media | b. A device on a network | d. Network | e. The physical means used to carry data signals | e. Data Link | c. The protocol data unit (PDU) used in Layer 2 of the OSI model | Concept Questions 1. What are the two main jobs of the data link layer? * Allows the upper layers to access the media using techniques such

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    Beta carotene

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    purpose of this experiment is to extract and find quantitative amount of Beta-carotene from a carrot sample. The raw product(carrots) was extracted using simple distillation. The purity of the product will be characterized using percent yield‚ thin layer chromatography‚ Beer’s Law‚ and UV-vis. Beer’s law is used because in this experiment we are comparing our extraction of B-Carotene to the Stock B-Carotene. Beer’s law shows that absorbence of light at a specific wavelength is proportional to the concentration

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    CHEM 2204 Chromatography Lab by wyk.wong » Fri Jul 11‚ 2014 10:25 am Results and Calculations Rf values Rf=(Distance moved by the spot (cm))/(Distance moved by the solvent front (cm)) Toluene: Rf=2 cm/3.8 cm=0.53 (Fluorenone) Rf=1.1 cm/3.8 cm=0.29 (Fluorene) Hexane: Rf=1.8 cm/2.2 cm=0.82 (Fluorene) Rf=0 cm/2.2 cm=0 (Fluorene Table 1: Experimental IR peaks compared to literature IR peaks for fluorenone Functional group Experimental peak (cm-1) Literature peak (cm-1) C-H 3010.5 3013

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    Ccn Question Bank

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    : III / VI SUBJECT : COMPUTER COMMUNICATION AND NETWORKS Question Bank UNIT I 1. Write about the Evolution of data networks. 2. Explain the various topologies in networking. 3. Explain the ISO – OSI layer model of data communications. 4. Explain the Physical layer functions and various Wired media in detail. 5. Differentiate the connection oriented and connection less data service. 6. Explain the radio wave communications in detail. UNIT II 1. What are the various Local area

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    using layers. The message is first created at the application layer using a software application. This software translates the message based on the protocol being used to transfer the message and places the necessary information along with the message into a Protocol Data Unit (PDU) which is also known as a ‘packet’. This packet is then passed on to the Transport Layer. The transport layer‚ using its own Transmission Control Protocol‚ or TCP‚ takes the packet from the application layer and places

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    Mobile Phase The mobile phase is the phase that moves through the stationary phase (explain that stuff). As the mobile phase is moving through the stationary phase‚ it picks up compounds that need to be tested‚ taking those compounds with it. Through adsorption‚ the mobile phase separates into different components (soinc). The mobile phase can be liquid‚ gas‚ or supercritical fluid. How Does Chromatography Work? Chromatography is a surface effect. It works by first starting off with an unidentified

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    Installations: Operating system of network: Install file and print sharing: Negative aspects of the Internet: Network topology Dividing the transmitted bit stream into frames and determine which route the subnet to use. 2.4 OSI model and the 7 layer diagram. 1. Difference between OSI and TCP/IP Connection – oriented communication and connection less communication Benefit of network Network: Network is very popular common word now. It is a collection

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