CHEM 301 LECTURE Unit 1 0 . COORDINATION CHEMISTRY Factors t hat affect solubility: Common ion: decrease in solubility Complex ion: increase in solubility How does complex ion formation increase solubility? Consider the complex ion formation between silver and ammonia: + Ag + 2NH3 A g(NH3 )2 + Kf = 1 .5 x 10 7 where Kf i s the formation constant (always >1 ‚ formation of the complex is highly favorable) Complex ion formation increases the solubility of sol ids in water
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Sangil Kim Professor Murray English1A 16 October 2007 Response Journal: Love: The Right Chemistry In the article‚ “Love: The Right Chemistry‚” Toufexis mainly talks about love related to chemistry. The fact that human species‚ considered as sexual organs‚ possess own characteristics contributes to each individual with a unique attraction. The term “love” has created the new way of making it – a sexual relationship. Also‚ the concept of love nowadays seemingly depends on an individual’s appearance
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Chromatography (TLC) and Melting point. Introduction: There are only several compounds and molecules that are essential to the human body. Such molecule like D-glucose which is considers the second central substance in the maintenance and metabolite of human life after water. D-glucose is an important monosaccharide and has being subjected to many years of NMR analyses due to its anomeric properties of αand βusing deuterium1. Both anomers of D-glucose have a similar structure with a molecular formula of C6H12O6
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Guide Student Name: Mzevinar Gabaidze Subject: Chemistry Grade: MYP 10 Tbilisi 2013 Project Title: Acidic rain and air pollution Options: * Use your knowledge in chemistry of hydrogen and provide suggestion how world’s energy crisis can be solved. * Use your knowledge in chemistry of sulfur and nitrogen and provide suggestion how air pollution in your city can be reduce. * Use your knowledge in chemistry of oxygen and provide suggestion how ozone layer depletion
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In the 18th and 19th centuries scientists wrestled with identifying and describing the nature of the “stuff” that produced change. One concept that became popular for a while was that of “caloric” (what we now call heat). “Caloric was originally conceived of as a quantity that would flow from a hotter object to a cooler one that would warm up as a result. It answered the need for a way for the cause of warming to get from here to there. Not only did caloric serve as a cause for warming‚ it
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What was West Africa like in the 1500’s? Benin was a city that dated back to the eleventh century – and no relation to the West African nation of Benin of the twentieth and twenty-first centuries. Benin was a large city for its time – a walled city several kilometres wide in a forested region inland from where the Niger River emptied into the Atlantic. In the mid-1400s the ruler of Benin‚ Ewuare‚ built up his military and began expanding. Captives taken in battle he traded to the Portuguese. Benin’s
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Petroleum‚ in one form or another‚ has been used since ancient times‚ and is now important across society‚ including in economy‚ politics and technology. The rise in importance was mostly due to the invention of the internal combustion engine‚ the rise in commercial aviation and the increasing use of plastic. More than 4000 years ago‚ according to Herodotus and Diodorus Siculus‚ asphalt was used in the construction of the walls and towers of Babylon; there were oil pits near Ardericca (near Babylon)
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The increase in unpredictable natural disasters events for a decade has led to put the disaster preparedness as a central issue in disaster management. Disaster preparedness greatly reduces the risk of loss lives and injuries and increases a capacity for coping when hazard occurs. Considering the value of the preparatory behavior‚ governments‚ local‚ national and international institutions and non-government organizations made some efforts in promoting disaster preparedness. However‚ although a number
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1 in vapour state sulphur partly exists as S2 molecule which has 2 unpaired electrons in the antibondind pi orbitals jus lyk oxygen and thus exhibits paramagnetism. 2 An interhalogen compound is a molecule whose atom contains two or more different halogen atoms (fluorine‚ chlorine‚ bromine‚ iodine or astatine). Most interhalogen compounds known are binary (composed of only two distinct elements). Their formulas are generally XYn‚ where n = 1‚ 3‚ 5 or 7‚ and X is the less electronegative
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Candidate name…………………………………………………………………….. MINISTRY OF EDUCATION MASALA SECONDARY SCHOOL BOARD MOCK EXAMINATION 2014 SCIENCE 5124/3 PAPER 3 (CHEMISTRY) 1hour 15minutes Additional materials: Monday 30th July 2014. Answer paper INSTRUCTIONS TO CANDIDATES Write your name‚ centre number and candidate number at the top of this page all separate Attempt all questions in SECTION A and only TWO questions in SECTION B SECTION A (45 marks)
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