one day but the victims of those who were trapped under the Chilean copper mine had to consider not one day but even two months. According to The New York Times Company(2014)‚ “On Aug. 5‚ 2010‚ a gold and copper mine near the northern city of Copiapó‚ Chile caved in‚ trapping 33 miners in a chamber about 2‚300 feet below the surface”. At this time no one knew the well being or the nature of the situation that happened at the copper mine. During this time communication between employers‚ families’ members’
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My name is Sadie Silvers I was born at Hamilton Medical Center in Dalton‚ Ga. On April 9‚ 2003 to Michele and Ricky Silvers. My parents earned a living by my dad working at Yellow Freight Lines in Ringgold‚ Ga and my mom was a stay at home mom. The very first out of many houses I ever lived in was off of Highpoint Drive. One of my most talked about memory in my first year was when my sister dropped me on my head when I was nine months old (she was stunting with me because apparently I was a good
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Amari is a 15 year-old girl who had a peaceful life with her villagers and her love‚ Besa; until pale strangers came in her village. They welcomed those pale strangers; stand on her village’s tradition‚ they always celebrate a party for the visitors. But the visitors don’t come for that‚ they come to take away the strongest‚ healthiest people in the village to sale them for money and murder the rest because they are the slave traders. Amari saw her love ones died but couldn’t do anything‚ she felt
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After being provided with a set of experimental data‚ a graph is then created. The graph contains useful information such as the slope‚ which could give the density value. The calculation of significant figures was one of the key objectives in this lab as well. Significant figures are essential to interpreting data because they allow for increased precision and accuracy. Also‚ using Excel‚ the density calculations could be performed quickly and accurately. In this experiment‚ the density of water
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LAB REPORT Introduction: In a chemical change‚ the identities of substances change and new substances form. In an equation the substances on the left are the reactants. The substances on the right are the products. In this experiment the objectives are to observe evidence that a chemical change has taken place. Infer from observations that a new substance has been formed. Identify and record observations that show energy is involved in chemical change observe the color‚ solubility of some substances
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of the three metal cylinders and the copper wire‚ the mass of the metal cylinders and calculate the densities of the cylinders and comparison with the acceptable values. MATERIALS 1. Triple- beam balance 2. Micrometer 3. A ruler (inches and centimeters) 4. A roll of copper wire 5. Wire Cutter 6. Vernier Caliper 7. Electronic balance (to measure mass of copper wire) 8. Graduated Cylinder 9. Three cylindrical metals (brass‚ aluminum‚ copper‚ zinc‚ etc) 10. Irregular object (lead
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Maria Quin Solubility Lab Purpose: The main purpose of doing this lab is to learn how to interpret solubility graphs and how the temperature does affects the solubility of different substances. There are other objectives of the lab which are learning what are concentrated‚ diluted‚ supersaturated‚ and saturated substances and how can they be identified. The hypothesis of this lab would be that when temperature increases‚ the amount of salt and copper sulfate that can be added in the
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Mass of crucible Mass with cuSO4 Mass after heating Difference in mass 29.50 34.50 32.66 1.84 30.40 35.40 33.56 1.84 26.37 31.37 29.54 1.83 29.50 34.50 32.66 1.84 Moles of water = mass/mr = 1.84/18 =0.102 CuSo4 moles = mass/mr = (5 - 1.84)
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Bunsen Burner B. Show to handle liquids and solids in lab. C. Basic safety and Electric balance. D. To show knowledge of being able to find volume of a liquid. II. Equipment. A. Bunsen Burner B. Rubber Hose C. Striker D. Electric Balance E. Crucible Tongs F. Piece of paper G. Gas and Knob H. Copper Wire I. 2.75g of Sugar J. Test Tube K. Graduated Cylinder L. Water III. Procedure • Put on Safety Goggles. • Bunsen Burner Lab o Attach Rubber hose to gas line o Turn Gold knob counter
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PREPARING CYCLOHEXENE FROM CYCLOHEXANOL INTRODUCTION Alkenes can be prepared in the lab by dehydrating the corresponding alcohol. Concentrated sulphuric and phosphoric acids both act as dehydrating agents. Phosphoric acid is preferred because it gives a higher yield of the alkene. Concentrated H2SO4 reacts with alkenes. SAFETY Eye protection must be worn. Concentrated phosphoric acid is corrosive. Mop up spillages immediately with plenty of water. Cyclohexene and cyclohexanol are
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