Experiment 1: Viscosity of Liquids Victoria Kulczak Lab Partners: Laina Maines & Heidi Osterman Date of Lab: 2/21/11 Due Date: 2/28/11 Abstract: The goal of this experiment was to determine the viscosity of given liquids. Two different methods were employed‚ the first measures time of flow of several methanol-water solutions‚ from point A to point B. The second method involves dropping a foreign object‚ in this case a sphere‚ into a cylinder of glycerol and measuring the time it takes for it to
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39. The Viscosity of Liquids After studying the present lecture‚ you will be able to Define viscosity and viscosity coefficient Outline the method to measure viscosity using Ostwald viscometer Determine the average molecular weight of a polymer Determine the surface concentration of 1-butanol in aqueous solution Measure the distribution coefficient of a solute betweenn two solvents 39.1 Introduction Viscosity‚ one of the transport properties‚ arises because of intermolecular attractive and
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Lab report: Viscosity of Liquids Introduction This experiment focuses on measurements of different trials of various concentrations. The collected data is used to compare and contrast to the ideal binary solutions and their components. The Ostwald viscometer is a useful laboratory equipment to measure the viscosities of many binary solutions. Background Molecules have the ability to slide around each other‚ result in a flow. Such a flow has a resistance called viscosity. Microscopically
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examine the viscosities of ideal and non-ideal solutions. The ideal being the toluene/p-xylene and the non-ideal being the methanol/water. The second objective of this lab was to investigate the temperature dependence of viscosity (Halpern‚ 17-1). Introduction: Viscosity is the resistance to flow of a certain fluid. In this experiment two solutions are used. According to the definition of viscosity mobile liquids have a relatively low viscosity. Fluidity is the reciprocal of viscosity‚ given
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bar and the temperature is 22°C. When inflated prior to launch‚ the balloon is spherical (radius 1.3 m) and the inflation pressure equals the local atmospheric pressure. 2.29 The viscosity of SAE 10W-30 motor oil at 38°C is 0.067 N · s/m2 and at 99°C is 0.011 N · s/m2. Using Eq. 2.8 for interpolation‚ find the viscosity at 60°C. Compare this value with that obtained by linear interpolation. 2.34 The velocity distribution for water (20°C) near a wall is given by u = a(y/b)1/6‚ where a = 10 m/s‚ b
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Prof. Kimberly Rutledge BIO 150 - Unknown Bacterium Identification March 26‚ 2014 Lap Report Unknown Number : #12 Name of Unknown : Pseudomona aerugninosa The identification of unknown bacteria is a time-honored part of microbiology courses. It will challenge my knowledge and skill in performing laboratory techniques and my ability to critically evaluate the information obtained from these techniques. The unknown bacterium tube number 12 was picked. According to the procedures that we have
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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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Michigan: Medical Gross Anatomy link and my textbook for reference. 4. Completed Activity 2‚ using the textbook and reference website. 5. Completed Activity 3‚ using the textbook and reference website. 6. Reviewed all completed work and prepared Lab Report. Results This section includes any data collected or observations made. The best way to do this is in the form of a table‚ graph‚ or chart‚ unless you are asked specifically to do otherwise. For example: Parental generation10th generation20th
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This pull results from the tendency of water molecules being evaporated on the surface of the plant to stay connected to water molecules below them‚ and so they are pulled along. Evaporation is the physical process that can change the water from the liquid state into a gas. This evaporation can occur in a river or in a soil within plant. ”Transpiration is just a subset of the evaporation process‚ and it’s the water that is inside plants‚ and then when that evaporates and moves into the atmosphere” (Science
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Viscosity of Liquids Part I: Low Viscosities Mona Kanj Harakeh 1 Objectives • To measure and analyze the viscosities of ideal (Toluene/p-Xylene) and nonideal (Methanol/Water) binary solutions and their components. • To determine the Activation Energy to viscous flow. • The effect of temperature change on the viscosity will be studied. Method: The viscosities of liquids are determined by measuring the flow time for various liquids in an Ostwald viscometer. 2 Ostwald viscometer 3
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