(c) (d) Figure 9.17‚ shows simple apparatus that determines the relative conductivities of pure water and solutions. Two metal electrodes are connected to a battery and a light bulb. When the electrodes are immersed in the solution‚ the light bulb will glow only if circuit is complete so that electricity flows from one electrode to the other through the solution. The more ions a solutions has‚ the greater conductivity
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= RI2 V = (Ra + R2) 0.25A V=V (Ra + R1) 0.75A = (Ra + R2) 0.25A (Ra + R1) 3 = Ra + R2 3Ra + 3R1 = Ra + R2 2Ra = R2 – 3R1 Ra = 0.5(R2 – 3R1) 3. In a simple series circuit a battery is connected through an ammeter to an electric lamp. A voltmeter is connected parallel to the lamp. The ammeter reads 0.75 A and the voltmeter 50 V. What is the resistance of the lamp neglecting the current drawn by the voltmeter? If the current in
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section. 1. Discuss Alan’s criminal liability for his statement to Bhu‚ “We sort out thieves like you.” (7 marks) I think that Alan would be trialled for assault under s. 47 of the Offences Against the Person Act 1861. This crime cannot be battery as no force has been used‚ neither can it be GBH or ABH as no wounding or injury has been caused. Assault offences can be done by: silence alone- as shown in the case of R v Ireland; as written words- shown in the case of R v Constanca; Psychological-
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microphone on this unit is adjustable and it also comes with added padded for the ear cups. The Logitech Wireless G930 has a frequency response of 50 to 20 kHz‚ an impedance of 32 ohms‚ a 40 mm driver‚ and a dry weight of 1.1 pounds. Moreover‚ the battery of this unit can last you for ten hours per charge on the USB recharging base. The left ear cup contains the power switch‚ the surround sound button‚
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Core 1 summary notes 1) Fossils fuels provide both energy & raw materials such as ethylene‚ for production of other substances Identify the industrial source of ethylene from the cracking of some of the fractions from the refining of petroleum Catalytic cracking is the process whereby high molecular weight fractions are broken down to low molecular weight ones. This process is used in petroleum refineries where crude oil is broken down to smaller alkenes and alkanes‚ until ethene‚ propene‚
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HKDSE CHEMISTRY – A Modern View (Chemistry) Coursebook 3 Suggested answers Chapter 25 Simple molecular substances with non-octet structures and shapes of simple molecules Page Number Class Practice 1 Chapter Exercise 2 Chapter 26 Bond polarity Class Practice 4 Chapter Exercise 5 Chapter 27 Intermolecular forces Class Practice 7 Chapter Exercise 9 Chapter 28 Structures and properties of molecular crystals Class Practice 11 Chapter Exercise 12 Part Exercise 14 Chapter 29 Chemical cells in daily life
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Marketing Rayovac Corporation The Rechargeable Battery Opportunity Done By: Mariam El Naamani Submitted To: Dr. Marwan Wehbe Due To: 26/4/2013 Opportunity Analysis: I. Opportunity Identification: After analyzing the situation of Rayovac Corporation and with the management system of the company‚ the firm has bigger opportunities to enter and lead the North American market in terms of providing battery and rechargeable batteries to its residents‚ commercial and industrial clients
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CHEMICAL EFFECTS OF ELECTRIC CURRENT Conductivity of Liquid Electrolysis Electroplating www.excellup.com ©2009 send your queries to enquiry@excellup.com Finish Line & Beyond The materials‚ which allow electric current to pass through them‚ are good conductors of electricity. On the other hand‚ materials‚ which do not allow electric current to pass through them easily‚ are poor conductors of electricity. You know that metals such as copper and aluminum conduct electricity whereas materials
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K.C. LTD. MARINE IMPRESSED CURRENT CATHODIC PROTECTION SYSTEM ICCP DOCUMENT REV(E) : 14/04/06 NOTES : a) Do not attempt to service or readjust the system operating levels without first reading and understanding this Manual. b) The system operates at low d.c. voltage levels and may be severely damaged by high voltage test equipment such as a 500V Megger. Read the relevant section in this manual before carrying out any tests. c) There is no need of protective current as far as ship is well enclosed
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Experiment 4: Conductivity of electrolyte solutions (Dated: October 29‚ 2009) I. INTRODUCTION Pure water does not conduct electricity‚ but any solvated ionic species would contribute to conduction of electricity. An ionically conducting solution is called an electrolyte solution and the compound‚ which produces the ions as it dissolves‚ is called an electrolyte. A strong electrolyte is a compound that will completely dissociate into ions in water. Correspondingly‚ a weak electrolyte dissolves
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