"Liquid modernity" Essays and Research Papers

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    Absorber

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    counter-currently reacting with Na2SO3 rich feed. Introduction Absorbers are vertical towers used in distillation‚ gas absorption and liquid-liquid extraction processes. Absorbers can be operated co-currently or counter currently. In the former‚ both fluids involved are fed into the unit from the same point causing them to flow along each other. In counter current operation‚ the liquid is fed at the top of the absorber‚ flows downwards and contacts with rising gas fed from beneath. Absorbers can be classified

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    Evaporation

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    product and the vapor is condensed and discarded. Agitated thin film evaporators‚ wiped film evaporators‚ are designed to spread a thin layer or film of liquid on one side of a metallic surface‚ with heat supplied to the other side. The unique feature of this equipment is not the thin film itself‚ falling and rising-film evaporators use thin liquid layers‚ but rather the mechanical agitator device for producing and agitating the film (APV‚ 2000). Conventional heat transfer equipment may not be well

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    PRE LAB

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    covalent bonds have lower melting and boiling points. 1. Do ionic compounds conduct electricity as: (3 points ) A. Solids? No B. Liquids? No C. Aqueous solutions (when the ionic compounds are dissolved in water)? Yes 2. Do covalent compounds conduct electricity as: (3 points ) A. Solids? B. Liquids? C. Aqueous solutions (when the covalent compounds are dissolved in water)? 03.06 Covalent Bonding and Lewis Structures: Lab and Rubric Part

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    Thermal Expansion

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    high temperature region to the low temperature end. THERMAL EXPANSION (See chp. 16 in Physics Text). Three states of matter are solids liquids and gasses. http://www.chem.purdue.edu/gchelp/liquids/character.html Draw diagrams to show how the molecules are arranged in all three states below. Experiments to illustrate expansion of solids‚ liquids and gasses. (page 103) 1. Expansion of Solids (fig. 16.7) • Bimetallic strip – consists of two different metals‚ usually brass

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    cola explosion

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    Cola Explosion When the Mentos come into contact with the Diet Coke‚ a reaction causes the rapid formation of foam. it is concluded that the potassium benzoate‚ aspartame‚ and CO2 gas contained in the Diet Coke‚ in combination with the gelatin and gum arabic ingredients of the Mentos‚ all contribute to the formation of the foam. The structure of the Mentos is the most significant cause of the eruption due to nucleation.MythBusters reported that when fruit-flavored Mentos with a smooth waxy coating

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    Viscosity Lab Report

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    Average Density (kg/m^3) 2 9551 6046.24 3 5305.16 4 3282.57 Castrol oil results: Density of the liquid Castrol was found by dividing its mass over its volume at temperature of 26℃ as follows: Density= (mass of the liquid)/(Volume of the liquid used) Density of liquid= mass/volume= (24.5g )/(25 ml)= 0.98 g⁄ml =980 kg/m^3 The three balls were dropped into the liquid containing Castrol oil at a known distance of 0.252 m and the following data were recorded: Castor oil Travelling

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    DIY Lava Lamps

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    teaching chemical density‚ people often allude to a substance’s tendency to sink or float. This is technically incorrect. A much better analogy is whether a substance mixes with another substance or not. In the case of the lava lamps three different liquids are used – water‚ vegetable oil and food coloring. Oil is less dense than water so it does not mix with the water. Food coloring is denser than water‚ so it drops through the oil and settles in the water mixing with it. The chemical reaction is a

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    Lab Report Surfactant

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    (milk) and gas (food coloring) in the respiratory system. Because I know milk is non-polar and food coloring is polar‚ my hypothesis predicts the two will not mix voluntarily at first‚ but the soap acting as a surfactant‚ when added‚ will help the two liquids mix together. Materials (Part on: water surface tension) 1- A penny 2- A dropper 3- Water 4- Paper towels (Part two: surfactant) 1- Milk 2- 2 different color food coloring 3- Dishwashing soap 4- Cotton swab 5- A mall clear dish 6- Timer 7-

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    Japan

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    many peritectics? ______ How many peritectoids? ______ How many pure metal phase transitions? ______ How many congruent melting points??______ Q.2 a) A 90 wt% Ag-10 wt% Cu alloy is heated to a temperature within the b + liquid phase region. If the Composition of the liquid phase is 85 wt% Ag‚ determine: (a) The temperature of the alloy (b) The composition of the b phase (c) The mass fractions of both phases b) For a copper-silver alloy of composition 25 wt% Ag-75 wt% Cu and at 775°C (1425°F)

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    Latent Heat of Fusion

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    was calculated to be 45.76g. The error of the carried out experiment was calculated to be 20.06%. Introduction: A substance requires energy to change from one phase state to another‚ or in other words‚ when it goes from either a solid to liquid or liquid to gas. The potential energy that is stored between molecules of the substance needs to be overcome by the kinetic energy of the motion of the particles before the substance can undergo the phase change. The temperature of a substance as heat

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