= mole fraction liquid and y = mole fraction vapor on the horizontal axis. At a temperature of 114 oC what is the composition of the liquid according to this plot? 8. Examine Figure 5.38. Assume the boiling point for pure B is 120oC‚ for the azeotrope is 135oC‚ and for pure A is 80oC. Assume the azeotropic composition is 0.50 mole fraction A. (a) Draw a rough graph of temperature versus volume of liquid collected for a distillation starting with 100 mL of liquid having composition
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Part I: Lab Insert completed data tables for each part of the lab. Be sure that the data tables are organized and include units when necessary. Conductivity (4 points Solid Liquid Aqueous Solution Substance A Conductive No Yes Yes Substance B Conductive Yes No No Substance C Conductive No Yes Yes Substance D Conductive Yes No No Part II: Conclusion Answer the following questions in your own words‚ using complete sentences. Based on your observations in the lab
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Name: Ramlee Rudebaugh IPS 8- Chapter 3 Questions‚ 43-52 Score March 3‚ 2014 38 Use complete sentences and show your work with units on each problem. 43. How can you distinguish between unlabeled pint cartons of milk and of cream without breaking the seals? 2 By calculating the mass and dividing it by the volume to get the density‚ then compare densities. 44. A student has several different-size samples of substances I and II. She measures the masses and volumes of these
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of a substance to dissolve in another substance. Solutions are mixtures containing a solute (substance being dissolved) and a solvent (material that dissolves another substance). Solutes and solvents can be solids‚ liquids‚ or gases. The most common solutions‚ however‚ have liquid solvents‚ particularly water. There are many solutions that students encounter regularly‚ such as apple juice‚ soda‚ carbonated water‚ or salt water‚ in which the main solvent is good ol’
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force in surface tension is cohesion and gravity. Surface Tension is the condition existing at the free surface of a liquid‚ resembling the properties of an elastic skin under tension. The tension is the result of intermolecular forces exerting an unbalanced inward pull on the individual surface molecules; this is reflected in the considerable curvature at those edges where the liquid is in contact with the wall of a vessel. Because of this property‚ certain insects can stand on the surface of water
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Page 3 Diagram of Kinetic Molecular Theory Page 4 Solids Title Page Page 5 Diagram of Particles Page 6 Characteristics of a Solid Page 7 Pictures of Solids Page 8 Q & A Page 9 Liquids Title Page Page 10 Diagram of Particles Page 11 Characteristics of a Liquid Page 12 Pictures of Liquids Page 13 Q & A Page 14 Gases Title Page Page 15 Diagram of Particles Page 16 Characteristics of a Gas Page 17 Pictures of Gases Page 18 Q & A Page 19 Bibliography Page 20
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The investigation was designed to determine the effect of the addition of increasing concentrations of a miscible liquid (ethanol) on the solubility of KNO3 in water. The results of the investigation support the hypothesis that water‚ which exhibits greater polarity‚ is able to dissolve a greater mass of KNO3 at lower temperatures compared to tested concentrations of Ethanol ranging from 12.5% to 30%. Furthermore‚ the results of the graph 1 show correspondence to the dielectric constant of each solvent
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18 kelvin and 120 kelvin.[2] [edit]Factors Unlike gases or liquids‚ solid materials tend to keep their shape when undergoing thermal expansion. Thermal expansion generally decreases with increasing bond energy‚ which also has an effect on the hardness of solids‚ so‚ harder materials are more likely to have lower thermal expansion. In general‚ liquids expand slightly more than solids. The thermal expansion of glasses is higher compared to that of crystals [3]. At the glass transition temperature‚
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compound is the temperature at which the solid is in equilibrium with its liquid. A solid compound changes to a liquid when the molecules acquire enough energy to overcome intermolecular forces holding them together in an crystalline lattice structure. The melting point range is defined as the span of temperature from the point at which the crystals first begin to liquefy to the point at which the entire sample is liquid. This data can be tabulated experimentally through multiple trials for an
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Management Information System for the Information Age November 17‚ 2011 Dropbox Assignment 4: Crystal Ball‚ Clairvoyant‚ Fortune Telling . . . Can Predictive Analytics Deliver the Future? 1. Many predictive analytic models are based on neural network technologies. What is the role of neural networks in predictive analytics? How can neural networks help predict the likelihood of future events. In answering these questions‚ specifically reference Blue Cross Blue Shield of Tennessee? Predictive
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