Chapter 1 Introduction 1. Introduction 1.1EXHAUST SILENCERS Engine exhaust noise is controlled through the use of silencers and mufflers. Generally speaking‚ there is no technical distinction between a silencer and muffler and the terms are frequently used interchangeably. A silencer has been the traditional name for noise attenuation devices‚ while a muffler is smaller‚ mass-produced device designed to reduce engine exhaust noise. 1.2 SILENCER SELECTION FACTORS The use of an exhaust silencer is
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Conformational stereoisomer of butane Butane‚ C4H10 is an alkane with four carbon atoms which are bonded to each other by single bonds. Butane can form two isomers which are n-butane and isobutane. Figure1.1(a) and 1.1(b) shows the structures of n-butane and isobutane. Alkanes usually show conformational isomerism due the presence of C-C single bonds. It is important to understand that conformational isomer can only occur in compound with single bond but not double or triple bond. This is because
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molecular formula and a skeletal or line structure Determine the formula of a molecule from its skeletal representation Table Above Identify the functional groups in a molecule An organic compound can be viewed as a skeleton of carbon-carbon single bonds with "functional groups"
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heptane‚ benzene‚ and toluene are classified as aliphatic while cyclohexane‚ and cyclohexene are aromatic. All are not oxidized except for cyclohexene. I. Introduction Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons can be aromatic or aliphatic depending on their structure. Hydrocarbons that contain a delocalized ring of pi bonds are called aromatic hydrocarbons and those without a delocalized ring of pi bonds are called aliphatic hydrocarbons
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Bethesda 2005 PDA Visual Inspection The Top Ten compounds of particulate contamination in parenterals Markus Lankers Rap.ID Particle Systems GmbH 1 Bethesda October 20‚ 2005 Liquid Particle Explorer: Number Size‚ Composition in Minutes 2 Liquid Particle Explorer® Number Particles >2µm •Fully Automated •Easy Calibration Size Shape Chemical Composition (ID) Liquid Particle Explorer: Number Size‚ Composition in Minutes Visual Inspection - Production given: product free
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Correct!! Max Score: 5 Actual Score: 5 Question 7 The symbol 3CO2 represents Your Answer for Question 7 three atoms of carbon and one molecule of oxygen. Comments The correct answer is: three molecules of carbon dioxide. Max Score: 5 Actual Score: 0 Question 8 In water‚ hydrogen bonding occurs between the hydrogen and Your Answer for Question
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and prevent him from being injured during combat. As stated by Lynne Robinson on page 16‚ “Stark has dabbled with various titanium alloys‚ carbon fiber and nanotechnology for his armor.” Using these types of nanotechnology in the suit of Iron Man made it capable of creating his body armor in a certain aspect. Titanium
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functional group containing OH- when it is a substituent in an organic compound. It is also known as the characteristic functional group of alcohols and phenols. On the other hand‚ carbonyl group refers to a divalent chemical unit consisting of a carbon and an oxygen atom connected by a double bond. It is known as the characteristic functional group of aldehydes and ketones instead. In this experiment‚ hydroxyl- or carbonyl- containing samples were given to the group for examination. The samples
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environmental problems. Waste plastic disposal and excessive use of fossil fuels have caused environment concerns in the world. Both plastics and petroleum derived fuels are hydrocarbons that contain the elements of carbon and hydrogen. The difference between them is that plastic molecules have longer carbon chains than those in LPG‚ petrol‚ and diesel fuels. Therefore‚ it is possible to convert waste plastic into fuels. The non-catalytic pyrolysis process is the nearest technique to commercialization considering
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163 CHAPTER 13 HYDROCARBON Hydrocarbons are composed of Carbon and hydrogen. The important fuels like Petrol‚ kerosene‚ coal gas‚ CNG‚ LPG etc. are all hydrocarbons or their mixture. Sources: Petroleum and natural gas are the major sources of aliphatic hydrocarbon while coal is an important source of aromatic hydrocarbons. The oil trapped inside the rocks is known as petroleum. PETRA – ROCK‚ OLEUM – OIL. The oil in the petroleum field is covered with a gaseous mixture known as natural
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