freshwaters • Define where freshwaters lie on a spectrum of increasing concentrations of dissolved constituents in water. • On average‚ which ions are most prevalent in freshwaters (in comparison with sea water): sodium‚ chloride‚ calcium‚ bicarbonate? • What are hypersaline lakes? Describe their variable compositions. • In what units are constituents in freshwater measured as compared with seawater: grams per litre or milligrams per litre? • Geological influences
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A Comparative Analysis on Climatic and Edaphic Factors in various environmental conditions within PUP‚ Sta. Mesa Premises Bjon Lendle T. Bergantin ‚Eurika Innah Alyz a O. Murano‚ Eunizer A. Rono‚ April A. Vizcarra Biology Students‚ Department of Biology‚ College of Science‚ Polytechnic University of the Philippines ABSTRACT Climatic and edaphic factors fall under the abiotic components of an ecosystem; these are the non-living chemical and physical factors in the environment‚ which affect
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any other cation = low solubility (insoluble) silver hydroxide‚ AgOH‚ is insoluble (forms a precipitate) Phosphate (PO43-)‚ Carbonate (CO32-)‚ Sulfite (SO32-) + alkali ions (Li+‚ Na+‚ K+‚ Rb+‚ Cs+‚ Fr+)‚ and H+(aq)‚ and NH4 = soluble ammonium phosphate‚ (NH4)3PO4‚ is soluble + any other cation = low solubility (insoluble) magnesium carbonate‚ MgCO3‚ is insoluble Chromate CrO42- + alkali ions (Li+‚ Na+‚ K+‚ Rb+‚ Cs+‚ Fr+)‚ Ca2+‚ Sr2+‚ and NH4+‚ = soluble sodium chromate
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“Acid Rain” Environmental science What is Acid Rain? Acid rain is a rain or any other form of precipitation like rain‚ fog‚ snow‚ or hail that contains harmful substances higher than normal amounts of such as nitrogen and sulfur oxides‚ that is unusually acidic‚ meaning that it possesses elevated levels of hydrogen ions (low pH). Acid rain is also called acid deposition because this term includes other forms of acidic precipitation such as snow. The acid deposition is occurs
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BACK TITRATION AIM - To estimate volumetrically the amount of calcium carbonate present in the eggshell and analyzing the sources of errors to evaluate the result. Part A: Standardization of 2M NaOH(aq) Data Collection : Weight of substances Uncertainty Weight of watch glass + salt (potassium hydrogen phthalate) w1= 23.4380g ± 0.001g Weight of watch glass ( after emptying the salt)w2 = 21.5430g ± 0.001g Weight of salt (potassium hydrogen phthalate) w1 –w2= (23.4380± 0.001g) – (21
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Chapter 1 Background of the Study This chapter gives an overview of the research study‚ which includes the short introduction‚ the statement of the problem‚ the statement of the hypothesis‚ the significance and the importance of the study‚ the scope and delimitations and the definition of terms. INTRODUCTION Men and women in the present day‚ as essential to their living necessitate clothes. Clothes‚ of different designs‚ and of different functions serve the human race by giving them protection
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that had been used to make the structures. Marble and limestone used to be very common materials for art that was meant to be exposed outdoors. To a surprise‚ the acid rain could turn the calcium carbonate molecules that were found on these stone materials into calcium sulphate molecules. This is the result of calcium sulphate being dissolved by water; acid rain would eventually wash away the outside layer of buildings and statues. There are many examples all across the world of the corrosive effects
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Experiment 6: Synthesis of an Alkyl Halide Maria Alexandria Buraga Ammuyutan Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City 1101 Philippines ------------------------------------------------- Department of Food and Science Nutrition‚ College of Home Economics‚ Univeristy of the Philippines‚ Diliman‚ Quezon City 1101 Philippines ------------------------------------------------- ABSTRACT ------------------------------------------------- Alcohols react with hydrogen
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Chemistry Lab: Hydrolysis of Salts Name_____________________________________________________Date__________________ New Concept: Hydrolysis Reactions Review Concepts/Application: Writing chemical formulas‚ writing ionic equations‚ determining solubility‚ measuring acidity and basicity. Pre-Lab Discussion A salt is an ionic compound containing positive ions other than H+ and negative ions other than OH-. Most salts will dissociate to some degree when placed in water. In many
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CHE 151-50 Fall 2013 Lab report Isolating the Components of a Three Component Mixture The purpose of this experiment was to separate the component of three mixtures sand‚ sodium chloride and calcium carbonate then calculate the percentage by mass of each component recovered from the mixture. The other purpose of this experiment was to show us the students the concepts associated with physical and chemical properties of substances. Me and my lab partner‚ obtained a mixture of a un known
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