Water Technology Hardness of Water: Natural waters containing large quantities of dissolved salts of Calcium (Ca) & Magnesium (Mg) is called hard water. It is a characteristic of preventing lather formation of water with soap. Ca2+ & Mg2+ ions react with soaps which are salts of fatty acids (stearic or palmitic acid) to give insoluble scums or precipitates of calcium or magnesium stearate or palmitate. 2C17H35COO- + Ca2+ → (C17H35COO)2 Ca (scum) 2C17H35COO- + Mg2+ → (C17H35COO)2
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to tell about WATER water is the most imp thing on earth.without water no life.We take it for granted‚ we waste it‚ and we even pay too much to drink it from little plastic bottles. And still‚ today‚ nearly 1 billion people in the developing world don’t have access to it. Clean‚ safe drinking water is scarce. It is the foundation of life‚ a basic human need. Yet today‚ all around the world‚ far too many people spend their entire day searching for it. Simply put‚ water scarcity is either
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North Greenville University‚ I was a member and a student of the Spartanburg County School District 2. Specifically‚ I was part of the Boiling Springs community. A remote place that didn’t have much to offer at first glance; although‚ this was probably due to my birth in a crowed and industrialized city. Yet‚ during the almost decade that I have lived in Boiling Spring it has been becoming increasingly similar to the hustle and bustle that I left behind. New businesses and roads lead to families
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desalination of water water‚ desalination of‚ process of removing soluble salts from water to render it suitable for drinking‚ irrigation‚ or industrial uses. The principal methods used for desalination include distillation (or evaporation)‚ electrodialysis‚ freezing‚ ion exchange‚ and reverse osmosis. In distillation saltwater is heated in one container to make the water evaporate‚ leaving the salt behind. The desalinated vapor is then condensed to form water in a separate container. Although long
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How does the temperature of 75mls of water affect how quickly one teaspoon of sugar dissolves? Aims and Objectives The aim of this scientific enquiry is to determine if and how the temperature of 75mls of water affects the speed in which sugar can dissolve in. The objective is to use three different independent variable temperatures of water. Then record three dependent variables of time in which the sugar dissolves in the different temperatures of water being used. One being cold‚ which in this
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Water purification is the process of removing undesirable chemicals‚ biological contaminants‚ suspended solids and gases from contaminated water. The goal is to produce water fit for a specific purpose. Most water is purified for human consumption (drinking water)‚ but water purification may also be designed for a variety of other purposes‚ including meeting the requirements of medical‚ pharmacological‚ chemical and industrial applications. In general the methods used include physical processes such
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Heat‚ Temperature‚ and Phase Changes Assessment Practice Answer This graph shows what happens to the temperature of the water‚ while it was boiling in a kettle‚ as heat energy was being added to it and what the water was doing will it began to warm and change states. During a phase change‚ the temperature remains mainly constant. This occurs because the heat energy is used to break the bonds between the ice molecules as they turn into a liquid phase. It is possible to constantly
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Although many people go through extreme hardship during war‚ they can find things to love that gives them the endurance to pull through. The novel Salt to the Sea by Ruta Sepetys‚ details the story of a group of refugees that are desperately trying to escape the encroaching Russian army who are brutally pillaging‚ raping‚ and massacring everything in their path‚ by getting to the ship the Wilhelm Gustloff. The Wilhelm Gustloff is attacked by a Russian submarine and sinks and only four out of the
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The Physical properties of water: 1. Knowledge of the physical properties of water: Water is the most abundant compound on Earth ’s surface‚ covering about 70 percent of the planet. In nature‚ water exists in liquid‚ solid‚ and gaseous states. It is a dynamic equilibrium between solid and gas states at standard temperature and pressure. At room temperature it is tasteless and odourless‚ nearly colourless with a hint of blue. Many substances dissolve in water and is commonly called a universal
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8.4 Water 8.4.1 Water is distributed on Earth as a solid‚ liquid and gas y y y Define the terms solute‚ solvent and solution Solution a homogeneous mixture of two or more substances Solute a substance that is dissolved in another substance or the component of a solution present in a lower amount. Solvent a substance which can dissolve another substance or the component of a solution present in a greater amount. Identify the importance of water as a solvent Water is essential as a reactant
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