reasons for these sources are wood fire smoke‚ diesel vehicle exhaust and coal fired station emission. Argue2-air pollution has an impact on human environment the main components of Sydney’s pollution is smoke‚ sea salt spray‚ soil and secondary sulphate. In winter the wood fire that had been burning was responsible for up to 80% of pollution in the western suburbs including Richmond and Liverpool. 20 years ago Sydney’s air was much cleaner during that time because leaded petrol had been phased out
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Name: Date of Experiment: November 20‚ 2012 Group mates: Date of Submission: November 28‚ 2012 Experiment No. 1 ISOLATION OF CAFFEINE FROM TEA I. Introduction Caffeine is a very common substance and is found in coffee‚ tea‚ soft drinks‚ chocolate‚ and "stay-awake" pills such as Vivarin. It can be synthesized or isolated from natural sources. Caffeine constitutes approximately 4% of tea and coffee leaves‚ and is also found in cola nuts and cacao beans. Caffeine is a member
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AIM: To outline what a precipitation reaction is‚ describe ways which one can predict whether a precipitation reaction would form or not‚ describe the uses of precipitation reactions in everyday activities and industries BACKGROUND INFORMATION: Precipitation is the formation of a solid in a solution during a chemical reaction‚ such as evaporation. A substance that causes precipitation when it is added to a solution is called a precipitant. This can occur when an insoluble substance is formed in
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MARKETING PLAN 2004 ON ACI PURE MINERAL WATER PREPARED FOR S. ALAMGIR EXECUTIVE DIRECTOR ACI CONSUMER BRANDS PREPARED BY A. K. M. ZABED BRAND MANAGER ACI CONSUIMER BRANDS ACI CONSUMER BRANDS ACI LIMITED January 2004 Executive Summary Human history proceeds through development. This development can be visualized in every sphere of human life/civilization. Actually‚ technological innovation
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copper (II) sulphate salt Apparatus Eye protection Each working group will require: Glass beaker (100 cm3) Conical flask (100 cm3) Spatula Glass stirring rod Filter funnel (Note 1) Filter paper (Note 2) Bunsen burner‚ tripod and gauze Heat resistant mat PROCEDURE Stage 1 a Add 20 cm3 of the 0.5 M sulfuric acid to the 100 cm3 beaker. Heat carefully on the tripod with a gentle blue flame until nearly boiling. SAFETY: Be very careful not to knock the tripod while the beaker is on
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slightly soluble in water‚ and is a basic oxide forming an alkaline solution of magnesium hydroxide Mg2+(OH-)2‚ of about pH12. MgO(s) + H2O(l) ==> Mg(OH)2(aq) Reaction of oxide with acids: Behaves as a basic oxide dissolving to form the chloride‚ sulphate and nitrate salt in the relevant dilute acid. MgO(s) + 2HCl(aq) ==> MgCl2(aq) + H2O(l) MgO(s) + H2SO4(aq) ==> MgSO4(aq) + H2O(l) MgO(s) + 2HNO3(aq) ==> Mg(NO3)2(aq) + H2O(l) In all cases the ionic equation is: MgO(s) + 2H+(aq) ==> Mg2+(aq) +
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Achondrogenesis Description Achondrogenesis is a group of complex disorders that occurs as the most severe form of congenital chondrodysplasia (malformation of cartilage and bones). These conditions are characterized by a small body‚ short limbs‚ and other skeletal abnormalities. As a result of serious health problems‚ infants with achondrogenesis are born prematurely‚ stillborn or die before birth‚ are stillborn‚ or die soon after birth from respiratory failure. It at all they survive‚ it is for
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TABLE OF CONTENT CHAPTER | CONTENT | PAGE | | TABLE OF CONTENT | | | LIST OF TABLES | | | PREFACE | | | ACKNOWLEDGEMENT | | | INTRODUCTION | | ONE | ASSESSMENT OF PATIENT AND FAMILY | | | PATIENTS PARTICULARS | | | FAMILY MEDICAL AND SOCIO-ECONOMIC HISTORY | | | PATIENT`S DEVELOPMENTAL HISTORY | | | PATIENT`S LIFE STYLE AND HOBBIES | | | PATIENT`S PAST MEDICAL HISTORY | | | PRESENT`S MEDICAL HISTORY | | | ADMISSION OF PATIENT | | | PATIENT`S CONCEPT OF ILLNESS
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Factors Affecting Rates of Chemical Reactions Prepared By: Kelly Gunter For: Ms. Brohman Course: SCH-4U Introduction The main purpose of this lab was to investigate how temperature‚ concentration‚ the addition of catalysts‚ and the substitution of a more reactive reactant‚ can affect the reaction. The collision theory explains that in order for a reaction to occur‚ reacting particles must collide with one another. An effective collision makes reactants result in a reaction and
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English Proficiency This test is designed to assess the test takers’ general proficiency in the use of English language as a means of self-expression in real life situations and specifically to test the test takers’ knowledge of basic grammar‚ their vocabulary‚ their ability to read fast and comprehend‚ and also their ability to apply the elements of effective writing. 1. Grammar 1. Agreement‚ Time and Tense‚ Parallel construction‚ Relative pronouns 2. Determiners‚ Prepositions‚ Modals
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