Maricela Sandoval Period 2 10/27/12 Title of Lab: The Melting Temperature of a Pure Substance Purpose: The goal of this experiment was to find the melting point of Paradichlorobenzene and to observe the freezing/melting of a substance. The purpose was to also observe an endothermic and exothermic process. Introduction: The uses of Paradichlorobenzene are mainly as a fumigant for the control of moths‚ molds‚ and mildews‚ and as a space deodorant for toilets and refuse containers. It is also
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The simulation and analysis of liquid droplets with respect to heat capacity and droplet size Abstract Define Using Molecular dynamic simulation a cluster of particles was modelled and their behaviour analysed with respect to temperature change. As proof of a specific state i.e. solid‚ the Mean squared displacement was calculated and illustrated with respect to time. This occurred for varying temperatures. From the internal energy of the system per time step‚ the heat capacity was determined
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Evaporation and Transpiration Evaporation and transpiration (evapotranspiration) are components of hydrologic cycle‚ which at principle‚ can be calculated from meteorological observations such as temperature‚ humidity‚ radiation‚ wind speed‚ etc. The process‚ however‚ is quite complex and a substantial literature has been produced on it. In this chapter our focus is mainly on the concept and simple estimations of evaporation and transpiration. Mechanism of evaporation from water surfaces Here
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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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Introduction The purpose of this experiment is to determine the effect that temperature has on the growth and respiration of yeast fermentation. The growth and respiration of the yeast can be determined by using a glucose/ yeast solution mixed with water in flasks set at different temperatures. Yeast in order to produce‚ has to make energy‚ to carry out all cellular functions (Spicer‚ & Holbrook‚ 2007). The concept that aerobic metabolism of all yeasts‚ is determined by the relative sizes of the
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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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6.05 Logan Hotaling Materials Needed: 1. Alka-Seltzer 2. Glass 3. Water 4. Timer Procedure: 1. First you need to fill a glass up with 8oz of water and have it be 25 degrees Celsius. 2. Then you drop the Alka-Seltzer in the water and time how long it takes it to dissolve in the water. 3. Then we need to make the temperature go up then we need to drop the Alka-Seltzer in the water again and see how long it takes it to dissolve with the new temperature. 4. Now
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Lab: Caloric Content of Food Purpose: How many calories are in a peanut? How does it compare to other nuts? Materials: 250 ml beaker‚ ring stand‚ paper clip‚ balance‚ graduated cylinder‚ thermometer‚ aluminum foil‚ peanut‚ 2 other types of nuts‚ lighter. Background information: We measure the energy that foods give us in terms of Calories. A Calorie is the amount of energy required to raise 1000 grams (1 kg) of water one degree Celsius. Our bodies burn up calories through growth and
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