The answer to this is viscosity. Viscosity is the resistance of a liquid to flow. Every liquid exhibits this resistance to some degree. Therefore the more resistance shown‚ the higher the viscosity. It can be thought of as fluid friction‚ just as solids show friction between other solids. This friction is caused by the molecules within the substance. Viscosity is dependent on many variables of which include: temperature‚ density‚ concentration‚ friction‚ and gravity. The biggest factor of viscosity
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on the Winkelmann’s method. In this method‚ the volatile liquid is allowed to evaporate in a vertical glass tube over the top of which a stream of vapour-free gas is passed. A water bath is provided for maintaining a steady temperature so that there is no eddy current in the vertical tube and mass transfer takes place from the surface by molecular diffusion alone. By monitoring the evaporation rate‚ which is the rate of fall of liquid surface‚ and with the knowledge of concentration gradient‚
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an object is determined by properties of the object as well as properties of the fluid surrounding it. density=mass/volume More dense at bottom The result of pressure exerted equally in all horizontal directions by water. Pressure at bottom greater than at top A substance that is able to take the shape of any container that holds it. If a density is less than that of water (or the liquid it is floating in) acts against buoyant force A buoyant force on an object is equal to the weight of the
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mayonnaise similar to manufactured mayonnaise. Introduction The purpose of this experiment is to determine the methods and techniques required to produce mayonnaise. Mayonnaise is an emulsion‚ which means that it is a stable combination of two liquids that are immiscible. They key to this concept is that the combination must be stable. Water and oil‚ for example‚ do not combine to form an emulsion because of hydrogen bonds that form between each other in water molecules. These bonds prevent oil
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our cooking? 2.2. An Old Scottish Recipe or how to convert units. 2.3. Does one kilo of sugar weight the same as one of rice? or an introduction to the density. 2.4. Fresh or old eggs or the relation between density and floatability. 15 Unit 3. Let’s go to investigate about solids‚ liquids and gases. 3.1. Cheese is a solid‚ milk a liquid an steam a gas or states of matter in the kitchen. 3.2. Why gases have this behaviour? Or introduction to the particle theory. 3.3. Boiling water for
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given to English engineer Craven Walker who‚ in the late 1940s‚ saw a prototype of the lamp in a pub in Hampshire‚ England. This early version‚ according to the Walker legend‚ was made of "a cocktail shaker‚ old tins and things." He purchased the liquid-filled fixture and set out to make his own. Walker formed the Crestworth Company in Dorset‚ England‚ and over the next 15 years tried to build a better lava lamp. When first marketed under the name Astro Lite in British stores in the early 1960s‚
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Chemistry Final Exam Version 10/7/14 Name: Student number: Directions: It is important that you provide answers in your own words. Please focus only on information from the text/eBook to create your own solutions. Please do not use direct information from an outside source (especially copying and pasting from an “answer” website). Use of direct information from an outside source is against school policy. All answers will be checked for plagiarism. Instances of plagiarism can result in
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_2___mL Step 6: Density Measurements Part A Mass of empty graduated cylinder _16.9_g Mass of graduated cylinder and water 21.1_g Net mass of the water __4.2_g Density of the water _0.84_ g/mL Part B Mass of graduated cylinder and alcohol _20.4_g Net mass of the alcohol __3.5_g Density of the alcohol __0.7__ g/mL Part C Mass of graduated cylinder and salt solution ____g Net mass of the salt solution ____g Density of the salt solution
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The solute is the substance that dissolves. The solvent is the substance that does the dissolving. Solutions are homogeneous and do not show the tynall effect. E.g. salt and water. Suspensions They are heterogeneous mixtures of a solid and a liquid in which the solid does not dissolve. Suspensions will settle when left undisturbed. Suspensions will show the tynall effect. E.g. sand and water Colloids They are mixtures with characteristics part way between solution and suspension. Colloids
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Graphene based Supercapacitors with Improved Specific Capacitance and Fast Charging Time at High Current Density Santhakumar Kannappana‚ Karthikeyan Kaliyappanb‚c‚ Rajesh Kumar Maniand‚ Amaresh Samuthira Pandianb‚ Hao Yange ‚ Yun Sung Leeb‚ Jae-Hyung Janga‚f and Wu Lua‚e* a) Department of Nanobio Materials and Electronics‚ Gwangju Institute of Science and Technology‚ Gwangju 500-712‚ Republic of Korea. b) Faculty of Applied Chemical Engineering‚ Chonnam National University‚ Gwangju‚ 500757
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