DETERMINATION OF BOILING POINTS Introduction: The boiling point of a compound is the temperature at which it changes from a liquid to a gas. This is a physical property often used to identify substances or to check the purity of the compound. It is difficult‚ though‚ to find a boiling point. Usually‚ chemists can only obtain a boiling range of a 2 - 3oC accuracy. This is usually sufficient for most uses of the boiling point. Purpose: The purpose of this experiment is to determine the boiling points
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Shawn Girouard 2/5/15 Chapter 1 Dessler HW 1. Determine the latitude and longitude of the White House‚ the Kremlin‚ the Pyramids of Giza‚ and the point on the opposite side of the Earth to where you were born. Use an online tool (e.g.‚ Google Earth) or an atlas (which you can find in any library). White House: 38.8977° N‚ 77.0366° W Kremlin: 55.7517° N‚ 37.6178° E Pyramids of Giza: 29.9792° N‚ 31.1344° E Opposite of where I was born: 36.385913° S‚ 59.677734° E 2. a) Convert the following temperatures
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GROUP B MODEL ANSWER Howard et al.‚ Temperature-induced structural changes in CaCl2‚ CaBr2 and CrCl2: A synchrotron X-ray powder diffraction Phys. Rev. B 72‚ 214114 (2005). DO NOT PLAGIARISE THIS MODEL ANSWER Paragraph 1 The polymorphs involved are the halides in tetragonal rutile (TiO2) structure and the halides in so-called calcium chloride structure. As the name implies‚ the unit cell of halides in tetragonal rutile structure is tetragonal‚ with the lattice parameters a=b≠c and α=β=γ=90o
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Unit 6 Problem Set 1: Applying Thermal Expansion Learning Objectives and Outcomes Calculate the thermal expansions of solids and liquids. Assignment Requirements Complete the following problem. Show all of you work. The formula for the linear expansion of a solid is given by: An iron rod (α = 11.8 x 10-6 C-1) has a length of 1000 meters (or 1 km) at 0 degrees Celsius. If the rod must expand 10 cm to bridge a gap‚ to what temperature must the rod be heated? Increase in L = a*(T-To)L
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dksd dksmdfklda dksmdfmsd dfdsa sdfds sdfas d gfgdsf sd fsd d s d sd d gsdf gs d fgsd f g sd d g d g df d dfgf d g dff d sf s f sf d s f s f s f sdgfsdf sdf s d g sdf d d f f d sdddddddddd f gf d f ff f f s d gs df sdfgwsgsd gfsdfljkljgs sjgfskjflskjgsl sjflskjsjg skgsjjljdf s jskjljlsjlkjs sjfkjsdflgsenters the boiler at a pressure of 18 MPa‚ and saturated vapor enters the turbine. The condenser pressure is 6 kPa. Determine (a) the thermal efficiency. (b) the back work
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Department of Information Science‚ College for Women‚ Kuwait University ICS 240 – Fall 2008-09 Home Works #1 1. Write a program that prompts the user to input the length and width of a rectangle and then prints the rectangle’s area and perimeter. 2. Write a program that does the following: a) Prompts the user to input five decimal numbers b) Prints the five decimal numbers c) Converts each decimal number to the nearest integer d) Adds the five integers e) Prints the sum and average
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Biodegradable Styrofoam Made from Milk and Clay Objectives - The researchers will intend to develop the Styrofoam-plastic out of mostly milk proteins and clay. The material is lightweight‚ sturdy and largely biodegradable. The researchers will make sure that the end result doesn’t smell like spoiled milk. - Casein—milk proteins—is already used in making paper coatings and has an excellent barrier properties. But it has its limited mechanical strength and is water resistant. To make it more resilient
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Conclusion My hypothesis was if the temperature increases the Vitamin C content will decrease. The results indicate that my hypothesis was wrong; temperature does not affect the content of Vitamin C left in the orange juice. Future Considerations If I were to conduct this project again I would measure the temperature more accurately‚ conduct more trials‚ keep the juice at a high temperatures for a longer time and use another juice with a lot of Vitamin C content. The purpose of this experiment
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Beauty‚ Form and Function: An Exploration of Symmetry Writing Exercise – Hydrogen Bond Phase Transition (TRACK 2 ONLY) Writing & Marking Rubric Instructions: 1.Go to Core Study Resources → III Symmetry in Crystals → Downloads and Links. 2.Download the following: a. Yoshida et al.‚ Flexibility of Hydrogen Bond and Lowering of Symmetry in Proton Conductor. Symmetry 4‚ 507 – 516 (2012). b. Writing and Marking Rubric Scaled to 22 Marks Beauty‚ Form and Function: An Exploration of Symmetry
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3. As the temperature rises‚ the solubility of KNO3 also rises 4. Temperature C | Your data KNO3 in grams per 100 ml of H2O | CCZ data KNO3 in grams per 100ml of H2O | 35 C | 49 | 49 | 35 C | 49 | 49 | 70 C | 135 | 180 | 5. Data pointGrams of KNO3 in grams per 100ml of H2O at C | Your data saturated‚ unsaturated or supersaturated | CCZ data saturated‚ unsaturated or supersaturated | 75g of KNO3/100g H2O at 40 C | Saturated | Not saturated | 60g of KNO3 /100g H2O at 50 C | Not
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