The Fluidity of Water Desalination Period 2 Desalination‚ desalinization‚ or desalting refers to any processes that remove some amount of salt or other minerals from salt water. More specific‚ desalination is also the removal of salts and minerals‚ as in soil desalination. Desalination is used on many ongoing ships and submarines. Most of the modern interest in desalination is focused on developing cost-effective ways of providing fresh water for human use. Along with recycled wastewater
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Solubility as a Property of Matter A Lab of Chemicals‚ Chromatography‚ and Crime! Chemistry is a natural science that deals with the composition of matter and the changes it undergoes. At crime scenes‚ investigators often find unknown materials that need to be identified. If an unknown material is a mixture‚ an investigator may want to know one or two things about it: What are the ingredients of the mixture? Is the mixture found at the scene the same as a known mixture? A mixture is a collection
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SETTING UP AND MAINTAINING A SALTWATER AQUARIUM IN THE HOME By Sarah M. Burgett BIOG 159 Fall‚ 2011 When one makes the choice to install a saltwater aquarium in their home‚ all the prospects can be overwhelming. Much thought must go into the setup and upkeep of an aquarium in one’s home. It is important to make wise choices in regards to the tank itself‚ as well as all the other components that will become a part of the marine environment. By making wise decisions‚ the aquarium owner can take
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under mangroves act as sinks for a variety of heavy (trace) metals which colloidal particles in the sediments scavenged from the water. Mangrove removal disturbs these underlying sediments‚ often creating problems of trace metal contamination of seawater and biota. Mangroves protect coastal areas from erosion‚ storm surge (especially during hurricanes)‚ and tsunamis. The mangrove’s massive root system is efficient at dissipating wave energy. Likewise‚ they slow down tidal water enough that its sediment
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Water is no doubt very important. Our ancestors survived and thrived without oil. Water was vital‚ for drinking‚ agriculture and sanitation amongst many other uses. However‚ with the advent of oil in the 1960s‚ the importance of water has been diminished to a point where oil is more important than water. In this modern era‚ energy use has skyrocketed‚ human population augmented greatly and the world‚ globalised. It is in this era‚ oil is more important because it is the crux of development of a nation
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Beverage Density Lab Sugar Content Analysis Introduction Have you ever been to the ocean? Does it seem that you can float or swim much easier in the ocean than in a swimming pool? Seawater is more dense than freshwater due to the presence of dissolved salt in the ocean. As a result‚ our buoyancy – ability to float – is greater in salt water than in plain water. What factors determine the density of a solution? Can the density of a solution be used to determine how much of a particular
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Solubility refers to the maximum amount of solute that dissolves in a given amount of solvent at a particular temperature Factors Affecting Solubility 1. Effect of Temperature For some substances to dissolve in a given solvent‚ heat is absorbed. The reaction is endothermic. In this case‚ an increase in temperature increases solubility. For some substances‚ heat is released when they dissolve in a given solvent. The reaction is called exothermic. In this case‚ an increase in temperature
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it is true that the Earth is mostly water; 97% of it is salt water and 2% is frozen‚ but 1% is only fresh water available to drink. It would not be very pleasant to consume sea water nor is it good for you. Desalination‚ the process of converting seawater or wastewater so that it is consumable‚ is very costly and the most expensive water supply alternatives in California. Even if that water resource is their right next to us at our disposal‚ it is expensive to process the water and many taxpayers
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education MARK SCHEME for the October/November 2011 question paper for the guidance of teachers 0620 CHEMISTRY 0620/61 Paper 6 (Alternative to Practical)‚ maximum raw mark 60 This mark scheme is published as an aid to teachers and candidates‚ to indicate the requirements of the examination. It shows the basis on which Examiners were instructed to award marks. It does not indicate the details of the
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STABILITY OF FLOATING BODIES (White pp 92 – 95) A floating body is STABLE if‚ when it is displaced‚ it returns to equilibrium. A floating body is UNSTABLE if‚ when it is displaced‚ it moves to a new equilibrium. Consider a floating body tilted by an angle ‚ as shown below. For the untilted body the point G is the centre of gravity of the body where the body weight‚ W‚ acts. The point B is the centre of buoyancy (the centroid of the displaced volume of fluid) where the upward buoyancy force
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