Heat of Mixing: Ethanol and Water Abstract The temperature change when known amounts of water and ethanol were mixed was determined to see the enthalpy change in an isothermal and isobaric environment. Agreeable data was found compared to similar experiments. As the mole fraction increased of the solution so did the enthalpy until a certain limit of about 0.32. Since water’s structure and unique properties affect many aspects of a solution‚ the solutions enthalpy’s decreased at a certain time
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Objectives: (1) Determine the integral heat of solution for finite amounts of KNO3 dissolved in water. Extrapolate the measurement to infinite dilution to obtain the differential heat of dilution. (2) Incorporate the concepts learned in your Electronics laboratory to amplify and accurately measure temperature changes associated with solution formation. (3) Use the A/D capabilities of a computer to record voltage as a function of time (e.g. a strip chart recorder). Pre-lab assignment and questions: (1) Thoroughly
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three chiefs. Under this unit of 10‚000 warriors were 1‚000-man brigades‚ 100-man companies‚ and 10-man squads. (Doc C) They were expected to carry clothing‚ cooking pots‚ dried meat‚ a water bottle‚ files for sharpening arrows‚ a needle and thread and other useful items. The Mongols wore silk which made it easier for the soldier or physician to remove it without ripping further flesh.(Doc B) This clearly shows that the Mongols were well prepared for war and had distinct knowledge of it. Their strategy
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All the teachers and students knew each other‚ so it was easy to make friends.Even though I loved the school very much‚ I had a couple of ecscapades. My two best friends and I thought ourselves to be rebels back then. One time‚ we were forced to stand outside the headmistress’ office for the whole day because we rebelled against the killing of moles that was happening in our school field. We sang a song of our creation‚ called “Were You There When They Crucified the Moles”‚ which was based off a
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probably they too) have grown tired of the same food items on the menu: burgers‚ brats‚ and the occasional delivery pizza. You want to do something different and why not? If you are stumped on ideas‚ shake it up and try cooking authentic Mexican food. Mole is one of the most traditional dishes from our neighbors to the south and is a delicious place to start when deciding between Mexican recipes. It is a sauce that is widely considered to be difficult to prepare if you are not native to Mexico. But don’t
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The Golden Ratio By : Kaavya.K In mathematics and the arts‚ two quantities are in the golden ratio if the ratio of the sum of the quantities to the larger quantity is equal to the ratio of the larger quantity to the smaller one. The golden ratio is an irrational mathematical constant‚ approximately 1.6180339887. Other names frequently used for the golden ratio are the golden section and golden mean. Other terms encountered include extreme and mean ratio‚ medial section‚ divine
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eye is to be one of the fastest hunters of prey on Earth. The twenty two fleshy tentacles attached to the nose of the Star-nosed Mole are incredibly sensitive to touch and aid the mole in capturing prey. Just how beneficial is the snout of a Star-nosed Mole exactly? They could touch a pin head with their nose six hundred times at once. Crazy enough in a single day‚ this mole can consume up to its own body weight in worms and insects. They as well dig tunnels underground and are a valuable aspect to
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Financial Reporting Problem: The Procter & Gamble Company “On my honor‚ as a student‚ I have neither given nor received unauthorized aid on this academic work.” _____________ _____________ _____________ _____________ Financial Reporting Financial Reporting Problem Fall 2011 [pic] In order to evaluate your understanding of the use of accounting information‚ you are asked to analyze the 2007
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Marybeth Brooks Physics Lab III Specific Heat Capacity Lab May 25‚ 2011 Abstract The specific heat capacity of various metals can be calculated and compared to accepted literature values. Dropping heated metal samples into a calorimeter filled with water and then measuring the change in the temperature of the system accomplished this. The metal samples were heated in a boiling water bath and were assumed to be at 100 C when they were removed. It was added to a calorimeter and stirrer
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Heat and Energy Transfer Lab Materials needed: Part 1: bowls (not included in the lab kit; use cooking pots or plastic containers- something large enough to fit your hand) ice (not included in the lab kit) thermometers Part 2 test tubes – use three similar glasses or cups water various household materials for insulation stove or microwave to heat up water Part 1: Heat transfer and human sensation 1. Pour warm water in the bowl on the left‚ cold water in the bowl on the right‚
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