Research Report 105 May 2005 CENTRE FOR POLICY STUDIES Committed to independent policy research A Democratic Developmental State in Africa? A concept paper By Omano Edigheji Research report A Democratic Developmental State in Africa? A concept paper Omano Edigheji Centre for Policy Studies Johannesburg May 2005 This paper forms part of the CPS ‘State Series’ The Centre for Policy Studies is an independent research institution‚ incorporated as an association not
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he only chemical elements which are stable multi atom homonuclear molecules at standard temperature and pressure (STP)‚ are hydrogen (H2)‚ nitrogen (N2) and oxygen (O2); plus two halogens‚ fluorine (F2) and chlorine (Cl2). These gases‚ when grouped together with the monatomic noble gases; which are helium (He)‚ neon (Ne)‚ argon (Ar)‚ krypton (Kr)‚ xenon (Xe) and radon (Rn) ; are called "elemental gases". Alternatively they are sometimes known as "molecular gases" to distinguish them from molecules
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Ideal Gas Behavior Author: VanessaStoll Lab Partners: Janelle Vallejo Instructor: Nieves Montano Chem 151‚ Section 002G Date Work Performed: February 12‚ 2014 Date Report Submitted: February 20‚ 2014 Abstract: This paper reports a lab experiment done on the ideal gas law to determine differences in gas based upon their “R” constant difference to 0.082057. A total of seven gases were tested‚ which included‚ Ethanol‚ Hexane‚ Cyclohexane‚ Pentane‚ Ethyl Acetate‚ Butane and Acetone
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You will make observations similar to those of Robert Boyle and learn about the relationship between the pressure and volume of an ideal gas. 1. Start Virtual ChemLab and select Boyle’s Law: Pressure and Volume from the list of assignments. The lab will open in the Gases laboratory. 2. Note that the balloon in the chamber is filled with 0.300 moles of an ideal gas (MW = 4 g/mol) at a temperature of 298 K‚ a pressure of 1.00 atm‚ and a volume of 7.336 L. To the left of the Pressure LCD controller
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Thomas Graham studied the behavior of the diffusion of gases of unequal densities when placed in contact with each other‚ using air as his control. He wanted to numerically prove how the diffusion of the gas volumes was inversely proportional to the value of the density of the gas‚ under constant temperature and pressure. The significance of this experiment was that in led to a reevaluation of the concept of the movement of matter‚ realizing that diffusion dealt with small immeasurable elements
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Lab: Gas Laws Purpose: Obtain a reference of temperatures effect on gas using Charles’ law when heating a capillary tube in water on a heated hot plate. Then‚ cooling the same capillary tube with ice while measuring the temperatures cooling effect on the gas bubble inside the capillary tube. Measurements of temperature change are taken with microLAB sensor and graphed using microLAB software. A final determination of experiments determined absolute zero versus actual absolute zero will be
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Colligative properties in your Coke Have you ever put salt on snow to get rid of it‚ or wondered how your car engine stays warm in cold weather? If you have‚ you’ve probably noticed that the salt quickly melts the snow‚ and you’ve wondered how the engine can stay warm‚ when the metal on the outside of the car is cold. These are just some of the many examples of how colligative properties work in our everyday lives. A colligative property is a property of a solvent that depends on the amount
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Cascade control is a powerful extension of conventional 3 Cascade control is a powerful extension of conventional 3-term feed term feed back - control control. It is a strategy which compensates for specific disturbances at source and largely Prevents them from affecting process being controlled. A cascade control scheme has two controllers‚ the output of the master controller being used to adjust the set point of the slave controller The effect of steam pressure disturbances can be compensated
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ENGINE INSTRUMENT SYSTEMS I. Introduction A. Purpose – measure and indicate the operation of the engine B. Measuring (or sensing) and Indicating 1. Measuring – sending unit or sensor detect temperature‚ pressure‚ speed‚ etc. 2. Indicating – indicating unit or gauge displays data for the operator to use 3. Examples – engine instrument systems include: a. Tachometer – indication of engine crankshaft speed in Rpm b. Manifold absolute pressure (MAP) – indication of pressure in the induction system (intake
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why water has low vapour pressur and high surface tension Ok‚ well the answer to your first question is hydrogen bonds. Water has high surface tension and low vaporization temp because the hydrogen bonds in water make strong dipoles that are difficult to separate (yielding high surface tension) and greater energy to overcome when vaporized. study help site http://ocw.mit.edu/courses/physics/8-01-physics-i-classical-mechanics-fall-1999/syllabus/ Explain gas laws through KMT acc to k.m.t gasses
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