Surfactants are also known as ‘surface active agents’. They are usually organic compounds that contain hydrophobic tails and hydrophilic heads. They have wetting‚ emulsifying and dispersing properties‚ which can be used to improve the wetting ability of water‚ break up stains and keep the dirt in the water solution to prevent re-deposition of the dirt onto the surface from which it has just been removed. Surfactant can act as wetting agent as it lowers the surface tension of water. As a result‚
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experiment I am investigating the relationship between surface area and the volume of a model cactus and to determine whether this relationship affects the loss of water. We used oasis blocks‚ an absorbant material used by florists as a substitute for a cactus‚ that would soak up the water‚ and thus ideally show the percentage water loss by weighing the before and after evaporation weights. Independent Variable The independent variable is the total surface area for each size of the blocks and I think
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Evaporation? Aim * To find out if changes in temperature‚ draught and surface area of water open to air affects the rate of evaporation through the water. * To safely check if these variables change the rate of evaporation * To complete all the experiments in the short period given Prediction * I believe that a raise in temperature will speed up the rate of evaporation in the water * I believe that a larger surface area will speed up the rate of evaporation in the water * I believe
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Under armour is sports performance apparel make athletes stronger‚ faster and better * Soft‚ lightweight‚ stretch-blended spun poly in a generous‚ fashionable cut. Cotton just can’t compare. * UA Tech® HeatGear® fabric wicks sweat away from your skin to help you stay cool‚ light‚ and comfortable * Armour®Stretch accelerates dry time and improves mobility with built in 4-way stretch. * Anti-Odor technology—anti-microbial treatment prevents the growth of odor-causing bacteria.
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all serve the same basic purpose. They are made to absorb liquids. It doesn’t matter if the sponge is from the sea‚ or from a factory‚ they both use wicking and surface tension in order to absorb sponges. This use is what allowed the sponge to soak its way into history. Sponge absorption is the key power that utilizes wicking and surface tension to soak up liquids. Wicking‚ or capillary action‚ allows water to be stored in sponges when they soak up liquids. According to World Book Student‚ capillary
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Prediction or forecasting is a common phenomenon for which all human beings are always eager to know. The pre-knowledge about unknown and uncertain future prepare them to cope up in an efficient way. Since the dawn of civilization‚ this desire has been satisfied by priests‚ astrologers‚ fortune tellers‚ etc. In the present scenario‚ the necessity of predicting future is fulfilled in ample ways. There are several forecasting methods available from simplest to some of the most complicated; from judgmental
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Author *Email: choiw@fiu.edu Author Contributions ‡These authors contributed equally. Abstract Carbon nanotubes‚ in different forms and architectures‚ have demonstrated good promise as electrode material for Li-ion batteries‚ owing to large surface area‚ shorter Li-conduction distance and high electrical conductivity. However‚ practical application of such Li-ion batteries demands higher volumetric capacity‚ which is otherwise low for most nanomaterials‚ used as electrodes. In order to address
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Applications of Differentiation 1. If a line y = x + 1 is a tangent to the curve y2= 4x ‚find the point the of contact ? 2. Find the point on the curve y = 2x2– 6x – 4 at which the tangent is parallel to the x – axis 3. Find the slope of tangent for y = tan x + sec x at x = π/4 4. Show that the function f(x) == x3– 6x2 +12x -99 is increasing for all x. 5. Find a‚ for which f(x) = a(x+sinx)+a is increasing 6. Find the intervals in which the function f ( x ) = x3 - 6x2 + 9x + 15 is
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from top of the burette and to the bottom‚ the average volume of each of the water droplet and the volume of NaOH needed to neutralise the benzoic acid in aqueous solution. From the volume collected for 50 droplets surface area and radius is calculated for a droplet. The uses of the surfaces area and volume help to determined the concentration of benzoic acid in kerosene‚ mole of benzoic acid transferred‚ molar flux and mass transfer coefficient. 2.0 Theoretical background The background
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Chemistry For You by Laurie Ryan‚ it states "As you increase the concentration of the acid‚ there are more acid particles in the same volume. Therefore there is a greater chance of acid particles colliding‚ and reacting with more particles on the surface of the marble." So‚ this means that the higher the concentration of my acid the faster the reaction. Method I will weigh out one gram of marble chips using a balance and put it in a conical flask and add to it a concentration of 50cm3
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