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    reaction. Urea in solid mixed with water melts when heated. Then through filtration and drying‚ the liquid mixture yields the pure Urea. This is the same main reaction for Cinnamic Acid‚ mixtures‚ and the unknown compound. Mechanism: Recrystallization Side Reactions: The impurities are being dissolved wither at room temperature with the addition of water and/or with heating. They remain in liquid form during the recrystallization process. Chart Compound Known Melting Point Range of Pure Compounds

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    Why Boat Floats

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    force applies not just to water but to any fluid...A fluid is a substance that is able to take the shape of a container in which it is placed.” The source of this information is http://blackbirdlibrary.pbworks.com/w/file/fetch/70171466/dFlaoting. Liquids are way more dense than water like cooking oil and salt water. All gases are less dense than water‚ for instance their buoyant force is less. Buoyancy is measured in Newtons. Buoyant force was made by a guy named King Hiero the

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    Centrifuge Developed by Gustaf de Laval 1879 Centrifuge is a device in which solid or liquid particles of different densities are separated by rotating them in a tube in a horizontal circle. The dense particles tend to move along the length of the tube to a greater radius of rotation‚ displacing the lighter particles to the other end. English military engineer Benjamin Robins (1707-1751) invented a whirling arm apparatus to determine drag. In 1864‚ Antonin Prandl invented the first dairy centrifuge

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    Malunggay Leaves

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    CHAPTER I: INTRODUCTION There are many dangerous chemical in our surroundings; most o them can be located inside our own homes‚ almost every household would contain cleaning liquids like liquid detergent‚ mildew removers‚ insecticides and many other harmful chemicals; that is the reason why we decided to focus this investigatory project on creating an eco- friendly cleaning solution. The problem of the modern world is that we have created far too much hazardous chemical since it does the daily

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    sublimation

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    is the process of vaporizing a solid substance and condensing the vapors to again form the solid directly‚ without passing through an intermediate liquid state. There are very few substances which vaporize without melting‚ but in all cases of sublimation‚ the change from the vapor to the solid state‚ is direct‚ and without any formation of liquid. The sublimed body is recovered unchanged chemically‚ but its physical properties are often more or less altered. Sublimation is influenced by the pressure

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    Shahamat

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    mercury includes mercury vapor‚ inorganic compounds (chlorides and oxides)‚ and alkyl mercury (primarily methylmercury). Mercury pathway on site may be during flushing of mercury to the glass shell‚ Mercury is in liquid phase‚ under certain well-defined conditions‚ can cause liquid metal embrittlement (LME) of susceptible metallurgy or amalgam corrosion (AMC) The risk analysis procedures involves laboratory analysis of metallic equipment for timely prediction of mercury deposition. Pure mercury

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    explanation and it is now believed ice is always slippery because the molecules in its top-most layer behave like liquid water. Ice skating is that it has to do with the pressure of the skate‚ melting the ice and you skate on the melted water. The phase diagram of the water shows that at 1 atm‚ the water is solid‚ but at higher pressures (keeping the temp. the same) the water changes to a liquid. As mentioned before‚ ice is very slippery because it has little fraction. The solid surfaces have little bumps

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    Description The patient presents with dementia‚ poor posture (her chin close to her chest) and dislikes solids‚ there for has to be assisted to feed and chooses only to consume liquids. Her communication skills are also poor and doesn’t have the capacity to engage in a flowing conversation but has the ability to answer a question using the words ‘yes’ or ‘no’ or by saying individual words. I was given the task of feeding the patient at lunch time as she requires one to one support at meal times

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    Funtion of Eggs

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    structure provider and gives the cake firmness‚ lightness and stability. When eggs are beaten and heated they turn mixtures from a liquid into a semi-solid or solid state. Coagulation also binds ingredients together preventing crumbing and forms the structure for the cake. Two other functions of eggs are emulsification and moisture. Emulsifier in eggs brings fats and liquids together into a smooth batter‚ allowing for a moist cake that does not seem greasy. This action contributes to the volume and

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    to freeze‚ the kinetic energy of the particles must be low enough for the attractions to arrange the molecules in one position in a crystal structure. The freezing point of a solution is the temperature at 1 atm of pressure when both the solid and liquid phases are in equilibrium (Brown‚ 545). Solute particles cause the

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