4.) A mixture of three compounds‚ A‚ B‚ and C‚ is to be separated and purified by crystallization. Their solubilities in g/100 mL ethanol are given below. a. 5.) You need to perform a recrystallization using a mixed-solvent system. Which of the ff. solvents could not be used as a solvent airs for the experiment? Explain your selection. Hexane and water. A mixed solvent must contain two miscible solvents‚ in which hexane and water are not. 6.) What are the advantages/disadvantages
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II PUC – CHEMISTRY (34) MODEL QUESTION PAPER - 1 Time: 3hours 15 minutes Maximum marks: 70 Instructions: 1. The question paper has four parts: A‚ B‚ C and D. All parts are compulsory. 2. Write balanced chemical equations and draw labeled diagrams wherever required. 3. Use log tables and the simple calculator if necessary. (Use of scientific calculators is not allowed) PART-A I. Answer ALL of the following. (Each question carries 1 mark) 10x1=10 (Answer each question in one word or
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Electronic code lock with user defined password using 8051 microcontroller (AT89C51) Summary An electronic lock or digital lock is a device which has an electronic control assembly attached to it. They are provided with an access control system. This system allows the user to unlock the device with a password. The password is entered by making use of a keypad. The user can also set his password to ensure better protection. The major components include akeypad‚ LCD and the controller AT89C51 which
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Assignment No.1 Analysis and Design of Information System ( SAD) Course Code: CSE 312 Submission Date: 4th July 2013 Submitted To: Mr. Harsimran Singh Submitted By: Prabhjeet Singh 10810139 RST028A02 Q 1: Draw a DFD for Railway Reservation System. ANS:
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Materials Science and Engineering A 528 (2011) 1078–1086 Contents lists available at ScienceDirect Materials Science and Engineering A journal homepage: www.elsevier.com/locate/msea Cyclic loadings and crystallization of natural rubber: An explanation of fatigue crack propagation reinforcement under a positive loading ratio N. Saintier a‚∗ ‚ G. Cailletaud b ‚ R. Piques b a b LAMEFIP‚ Arts et Métiers ParisTech‚ Esplanade des Arts et Métiers‚ 33405 Talence Cedex‚ France Centre des matˇeriaux
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Systems‚ Topic 1 System - collection of parts working together‚ forming a functioning whole. Three types of systems Open System - exchanges matter and energy with its surroundings‚ ex. Ecosystem * energy from sun‚ converted to sugar by plant‚ plant is eaten by a bug - energy exchange * animals eating each other - matter exchange Closed system - exchanges energy with its surroundings but not matter‚ ex. Biosphere 2 experiment * closed systems do not occur naturally
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The specific role of the information systems as it relates to any organization is the ability to reach and respond on demand‚ in-real time and from a distance. It also influenced competitive strategies‚ the efficiency of operations‚ improve organizational performance‚ business processes‚ relationships with customers and other limitless possibilities in with an organization can run or operate. Some of the newly developed information systems help make changes in marketing‚ operations‚ e-commerce‚ logistics
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Systems and Sub Systems Inter- relationships Bernard White‚ Theresa Tetrault‚ James Lytle Paul Iweze Trevor Napier University of Phoenix BSA/310 Terry Potts Systems and Sub Systems Inter- relationships Riordan Manufacturing current resides in four locations throughout the world. Corporate Headquarters is located
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Name: Chelsea Smith States of Matter Lab Procedure: Go to: HYPERLINK "http://phet.colorado.edu/en/simulation/states-of-matter" http://phet.colorado.edu/en/simulation/states-of-matter and click on Run Now States of Matter Review: Kinetic energy (KE) is the energy of motion. Potential energy (PE) is the energy of position. What property of a substance corresponds to the average KE of its particles? Temperature What property of a substance corresponds to the average PE of its particles
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Name: Harrison Jones States of Matter Lab Procedure: Go to: http://phet.colorado.edu/en/simulation/states-of-matter and click on Run Now States of Matter Review: 1) Kinetic energy (KE) is the energy of _____Motion_______. 2) Potential energy (PE) is the energy of _____Position_______. 3) What property of a substance corresponds to the average KE of its particles? Temperature 4) What property
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