NAROK FORM FOUR DISTRICT MOCK – 2007 233/3 CHEMISTRY PAPER 3 MARKING SCHEME. 1. Table I : School value - 1mk 8cm3 – 9cm3 1mk Decimal / Accuracy 0.1 ( 1mk) Max ( 2mks) Penalise for unrealistic values a) Average volume 8.5 + 8.5 + 8.5 ½ = 8.5 cm3 ½ penalise for missing units 3 b) Moles of solution A 8.5 x 0.25 ½ = 0.002125 ½ moles 1000 c)i) Moles of HCl in 25cm3 of solution D: HCl + NaOH NaCl + H2O
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CMOS Memory Complementary Metal Oxide Semiconductor (CMOS) is a transistor that combines both positive and negative channel in the same circuit‚ and consume lower amounts of power when compare with single polarity devices. In 1963 C. T. Sah and Frank Wanlass prove that combining both channels in a circuit drew close to zero power in standby mode. RCA laboratories first produce CMOS technology for aerospace and commercial applications. The first static RAM was introduced in 1968 with
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Floyd describes 3 models of human communication. Which model do you think is the strongest? Do you think there is anything that needs to be added to the model to fully depict the communication process? Although I believe people are communicating through the action process more nowadays than they have been in the past‚ because of how important text messaging and email is to our society. I think that the transaction model is by far the strongest‚ and more accurate way of communicating. The transaction
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There have been three different models developed in modern policing which are intended to address some of the shortcomings within the police system. In the following paragraphs‚ I will analyze‚ compare and contrast the effectiveness of two of these models. These are‚ community policing and intelligence-led policing. David Phillips initially devised intelligence-led policing‚ community policing was a joint effort between John Alderson and Robert Trojanowicz. I will first explore the reasons that motivated
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Describe flashbulb memories and discuss evidence on whether they are more accurate than other long-term memories. The term Flashbulb memory was first used by Brown & Kulik in 1977 (cited in McCloskey‚ Wible & Cohen‚ 1988). This flashbulb mechanism hypothesis states‚ that when triggered by a surprising‚ emotionally charged‚ significant event‚ a more vivid and lasting memory would be created than those created by everyday memory mechanisms. Examples of events that were supposed to trigger
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Understanding How Human Memory Works Unit 4 Individual Project Deborah Brice Aspects of Psychology Professor Van Cleave May 6‚ 2012 The functions of a human brain consist of memory in the way things are thought of and learned and in the process. In the paper I will Identify and describe as well as give examples of how the human brain memory works. Also in this paper I will explain other kinds of forgetting and discuss the strategies that can improve memory consolidation and retrieval
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services after a crisis. Crisis Intervention Models and Suicide
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VIRTUAL MEMORY Submitted To: Dr. C. Taylor Submitted By: Sumit Sehgal Date: February 3‚ 2003 Sumit Sehgal 1 CONTENTS INTRODUCTION............................................................................................................... 3 HISTORY ........................................................................................................................... 3 CONCEPTS AND IMPLEMENTATIONS OF VIRTUAL MEMORY ............................ 4 Implementations of Virtual Memory...
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ABSTRACT A conducting plastic has been used to create a new memory technology which has the potential to store a mega bit of data in a millimeter- square device-10 times denser than current magnetic memories. This device is cheap and fast‚ but cannot be rewritten‚ so would only be suitable for permanent storage. The device sandwiches a blob of a conducting polymer called PEDOT and a silicon diode between perpendicular wires. The key to the new technology was discovered by
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I. Memory: Processes‚ Models‚ Sensory Memory‚ Short-Term Memory A. Memory processes 1. Memory and Its Processes Memory - an active system that receives information from the senses‚ organizes and alters it as it stores it away‚ and then retrieves the information from storage. Processes of Memory: Encoding – converting sensory information into a form that is usable in the brain’s storage systems. Storage – holding onto information for some period of time. Retrieval – getting information that
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