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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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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thought in the back of my head and tried to enjoy myself. A few good waves came and went‚ yet my board only cruised down a solitary breaker – the customary emptiness never came. My head was normally clear when I surfed‚ thoughts replaced by rushing seawater‚ doubts erased by coarse sand. But it wasn’t like that. Something was troubling me‚ but I couldn’t put my finger on what it was. The wave had finally run out‚ I floated off the back and completed the long‚ strenuous paddle back out behind the breakers
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years ago during the Eocene period. • The upper layers are Yellow mounds weathered by yellow soil and black ocean mud that have contained fossil sand‚ or paleosol. • The Pierre Shale is black in color and deposited by sediment filtered through seawater and black mud on the sea floor that hardened into Shale. This formation took place 69-75 million years ago during the Cretaceous Period. Some of the
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fight. Pi was left Richard Parker as his sole companion‚ and Pi fled the lifeboat to a small raft he cobbled together from available materials. The lifeboat had a number of cans of water and food rations‚ some floating water stills for distilling seawater‚ some orange whistles‚ a few hooks and fishing line‚ and a book on survival in a lifeboat. Pi
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EARTH’S HISTORY Academic Standard 8-2 Study Guide 8-2.1 Explain how biological adaptations of populations enhance their survival in a particular environment There are variations among species of similar populations. Organisms of a species differ from one another in many of their traits. A trait that helps an organism survive and reproduce is an adaptation. Species in a particular environment that are better adapted to living conditions there and are therefore able to meet their survival
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