6.1 ABSTRACT The densities (ρ) and viscosity (η) were reported for binary mixtures of N-methylformamide with O-substituted aniline (2-chloroaniline‚ 2-methylaniline and 2-methoxyaniline) over the entire composition range from 303.15 K to 318.15 K and at atmospheric pressure 0.1 MPa. These experimental data have been used to calculate excess volume (VE)‚ deviation in viscosity (∆η) and excess Gibbs energy of activation of viscous flow (G*E). The variations in these properties with composition for
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Effect of Temperature on Polymers: Solids on heating eventually melt to form a liquid. With polymers it is not so simple rubber on cooling (in liquid nitrogen) becomes brittle or glassy. Many polymers have a mixture of ordered (crystalline) regions and random (amorphous) regions. In the glassy state‚ the tangled chains in the amorphous region are frozen so movement of chains is not possible the polymer is brittle. If the glassy material is heated‚ the chains reach a temperature at which they
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Daniel H. Perry Procedures of Measurement and Density of Sugar in Soda Introduction The main focus of this lab was to acquire a basic understanding of how to properly use measuring devices in order to determine properties of a liquid. These properties are volume‚ mass‚ and density. The following measurements were obtained in the lab: density of water‚ both density and concentration of aqueous sugar solutions‚ and density of various soft drinks with respect to sugar. Additional experience was
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field of water treatment‚ such as solid-liquid separation effect is remarkable. It is Widely used in water source heat pump‚ water treatment‚ food‚ medicine and other industrial sectors. And it also used river water‚ well water‚ sand‚ coal washing water‚ industrial concentration‚ solid-liquid separation‚ liquid degassing and the miscibility of separation. Operating Principle: Cyclone desander is based on the principles of centrifugal sedimentation and density difference‚ when the water under a certain
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(given by client) / (by process cal.) Molecular weight of comp. = 36.5 Liquid / Scrubbing media Properties Scrubbing media = 20% NaOH Liquid flow rate‚ L = 77 kg/h = 0.0214 kg/s Liquid Density‚ L = 1100 kg/m3 Conversion : Liquid Viscosity‚ µL = 0.0035000 Ns/m2 3.5 Cp = 0.00350000 Ns/m2 Packing factor
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objects to float in liquid‚ is buoyant force‚ more commonly known as buoyancy. A solid object’s density determines whether or not the buoyant force of a liquid can lift it. The density of an object depends upon its weight and its size. Given two solid objects that are different sizes‚ but weigh the same‚ the smaller‚ more compact object is the denser of the two. Fluids also have density. When an object is placed in the fluid‚ it pushes aside some of the liquid and‚ if its density is greater than that
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considerations: Briefly describe the safety measures you had to take to perform the experiments. Before entering the lab‚ I put on my lab coat and practiced using my goggles in case of any spills or splashes. I also used proper methods for dispensing my mix liquids. /2p /2p Procedures: Briefly describe the experimental procedures you followed to answer the guiding questions. Outline the specific problems you were trying to solve and how you did it. 1. /2 p /2 p Find the volume of the
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DENSITY DETERMINATION An old riddle asks “Which is heavier‚ a pound of feathers or a pound of lead?” The answer is obvious‚ of course‚ since a pound of feathers and a pound of lead both weigh the same‚ one pound. However‚ there is clearly something different about a small piece of lead and a large bag of feathers‚ even though they weigh the same. What is this difference? The relationship between the lead and feathers is expressed by the physical property called density. Density is defined
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Lab Jessica Cimaroli Lab 1 Purpose To learn about the International System of Units (SI) system and how it relates to measurements in mass‚ length‚ temperature‚ volume‚ and time. To learn about the common techniques and laboratory equipment used to make SI measurents. Procedure Length Measurements 1. Gather the metric ruler‚ CD or
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and then becomes negative below this temperature‚ this means that water has a maximum density at this temperature‚ and this leads to bodies of water maintaining this temperature at their lower depths during extended periods of sub-zero weather. Also‚ fairly pure silicon has a negative coefficient of thermal expansion for temperatures between about 18 kelvin and 120 kelvin.[2] [edit]Factors Unlike gases or liquids‚ solid materials tend to keep their shape when undergoing thermal expansion. Thermal
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