Every winter road salt is used on sidewalks‚ roads‚ and highways to melt snow and ice. These are to prevent human activates from turning into accidents. When the snow melts the road salt gets dissolved into the melted ice and snow and becomes a formula. This formula sinks into the land (soil mostly) and kills vegetation. The purpose for this exit project experiment is to find out what are the affects of road salt on plants. The reason for doing this lab is to find out what a
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Department of Chemistry [Colligative Properties & Osmotic Pressure] Purpose : The experiment this week had two different purposes. The first is to teach us about freezing points. This lab was designed to show us the freezing point of a pure solvent‚ in comparison to a solvent in a solution with a non-volatile solute. The second goal of the experiment is to teach students about osmosis. In the experiment‚ we got to observe osmosis as well as understand dialysis
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America‚ Defined by Diversity Robert Kennedy believes‚ “Ultimately‚ America’s answer to the intolerant man is diversity‚ which our heritage of religious freedom has inspired.” Today‚ America honors its diversity more than its unity. Diversity is a building block in a country as alluring as America. While it may be true that the unity is vigorous in a country‚ the real point to consider is that diversity brings our heritages together and allows for freedom. Diversity is the main factor in bringing
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The ethnically diverse of British colonies in North America during the 18th “We are a nation of communities... a brilliant diversity spread like stars‚ like a thousand points of light in a broad and peaceful sky.” --------- George H. W. Bush The United States of America has reputation as a country of freedom and diversity ever since the early time of its history- the colonial period. However‚ it is not until around 17th- 18th century that the British colonies in North America became the most ethnically
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Tossed Salad Vs. Melting Pot In discussions of tossed salad and melting pot‚ a controversial issue is whether or not tossed salad is better than melting pot. Tossed salad represents multiculturalism. The tossed salad is colorful and it has unique and different ingredients it has the tomatoes‚ the lettuce‚ the cucumbers‚ the red and green and orange bell peppers and other ingredients. Each ingredient has its own unique color‚ texture and taste. What unites all these ingredients though is the
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6. Results and Discussion 6.1. Mix Design of Cold Recycled Bituminous Mixture Compaction characteristics of untreated bitumen mixes according to Modified Proctor Test is shown in Figure 6. When the RAP content increased‚ it resulted in reduction of MDD and the corresponding increase in OMC. The decreased MDD is obtained due to the weak bond between RAP and the virgin material and also due to less fine material that plugs the voids to produce denser mix. The corresponding increase in OMC is
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Never Change the Identity “The Americanization of Shadrach Cohen” was written by Bruno Lessing takes place in United States in 1903. The story is about Shadrach Cohen and his two sons Abel and Gottlieb. His sons migrate to United States from Russia and open a store. He has been invited by his children’s to move to United States because his sons need financial support for expanding their store. The theme of this story is to be yourself and keep your identity similar even while in different environments
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Purpose: The purpose of this lab was to determine the freezing point of pure water‚ the experimental van’t Hoff factor for a substance and the molar mass of an unknown solution. Reagents: 25mL deionized Water ¼ to ½ inches of rock salt 25mL Sodium Nitrate (NaNO3 ) 25mL unknown solution – handle unknown solution carefully Procedure: For part 1‚ the freezing point of deionized water was determined. An ice bath was prepared by filling a 600mL beaker ¾ full of ice and covered with ¼ to
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09/17/13 Che 102L Lab # 4 Molar Mass by Freezing Point in Anti-Freeze. Objective: to determine the freezing point of pure naphthalene‚ determine the molar mass of an unknown by measuring the freezing point depression of a solution of the unknown in naphthalene. Materials: Beakers 600 mL‚ 2-250 mL‚Crystal Ice‚20 g of NaCl‚Stirring Rod‚Thermometer‚Foil‚ Water‚ 10 mL‚ Cylinder‚ 25 mL 100 mL Dropper‚ 2 Test Tubes. Procedure: Filled 600 mL beaker with ice‚ took temperature until it got
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The goal of this experiment is to find the molar mass of an unknown substance by measuring the freezing point depression of a known amount in an aqueous solution. Freezing point depression is a colligative property of solutions. There are three other properties‚ which are boiling point elevation‚ vapor pressure depression‚ and osmotic pressure. Colligative properties of a solution depend on the amount of solute and solvent molecules and not the specific properties of the molecules. The temperature
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