Experiment 1: Calorimetry Nadya Patrica E. Sauza‚ Jelica D. Estacio Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City 1101 Philippines Results and Discussion Eight Styrofoam ball calorimeters were calibrated. Five milliliters of 1M hydrochloric acid (HCl) was reacted with 10 ml of 1M sodium hydroxide (NaOH) in each calorimeter. The temperature before and after the reaction were recorded; the change in temperature (∆T) was calculated by subtracting the initial temperature
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and extremely devastating weapons such as the machine gun‚ and the atom bomb. "The Death of the Ball Turret Gunner" gives a small insight to such chaos. It is a poem written by Randall Jarrel while he served in the Army Air Force during World War II. It is a poem about the thoughts the gunner might have felt as he carried out his mission‚ and is probably based on firsthand experience with a ball turret or a gunner.
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The Rocky Shore Experiment Research Question: How does type of substrate affect the variation of species and vegetation as you move away from the seashore at a Rocky Shore? Hypothesis: As we get further away from the seashore‚ there would be a decrease in the number of species and vegetation found. Also‚ the type of substrate will have a major affect on the biodiversity. Background Information: A rocky shore is an intertidal area of seacoasts where solid rock predominates. Rocky shores are
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improve is getting involved with the children. A way to get involved with the community’s children is if there is a free sports program for the children to participate in after school‚ on the weekend‚ or during the summer. The program will be named “The Ball is in your Court” which means “it’s your responsibility now‚” referring to the children’s life‚ which the students decide which direction to head in on the life journey. The program will be free to students and will accept any donations or voluntary
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A hard rubber ball is dropped from rest. It falls to the concrete floor and bounces back up ALMOST to its initial height. A motion detector is mounted on the ceiling directly above the ball‚ facing down. So‚ the positive direction -- the away-from-the-detector direction -- is downward. Draw the position‚ velocity‚ and acceleration graphs. Since moving downward is a positive direction‚ is the velocity positive when the ball falls‚ 0 when it hits the ground‚ and then negative when it moves up?
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Investigating the effectivness of PVA and PVAc as base polymers In the production of a polymer ball. Introduction A monomer refers to a specific group of atoms that from a molecular unit. When monomers are strung together like a long chain they form polymers. A good analogy of polymers‚ would be long connections of chains which become tangled like a bunch of spaghetti in a pot. The reason for experimenting with‚ and understanding polymers is because they play such a major roll and are found
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Question : Her First Ball Themes “Her First Ball” is a short story written by Katherine Mansfield’s‚ Mansfield’s mainly focuses with the shortness of happiness and joyful moments in human life. In this story‚ the protagonist is a young girl called Leila who with her cousins attends her first ball‚ a large formal ball with dancing. The main themes of this story are very dramatically described throughout the short story. The story tells us the idea of a girl’s first experience of a ball dance. Leila was
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Ball mill is advanced technologies and energy-saving‚which is not only high grinding capacity but also low energy consumption.what is the main advantage of ball mill?How to use ball mill ?Ball mill is suitable for grinding all kinds of ores and other materials‚ which is widely used in mineral dressing‚ building materials‚chemical and other industries‚ Ball mill can be divided into dry type ball mill and wet type ball mill. Ball mill is widely used in refractory plant‚ cement plant‚ glass plant
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The ball mill is a key equipment for grinding materials‚ widely used in powder-making production line such as cement‚ silicate sand‚ new-type building material‚ refractory material‚ fertilizer‚ ore dressing of ferrous metal and non-ferrous metal‚ glass ceramics‚ etc. Ball mill can grind various ores and materials with dry type or wet type. There are two kinds of ball mills‚ grate type and overfall type due to different ways of discharging material. Ball grinder mill Maintenance and Repair Cycle
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seriously affects the production efficiency of ball mill. Uneven ball mill’s discharging may be caused by the following two aspects: Firstly‚ the feeding grinding materials cause the uneven discharging. When water into the grinding material is high‚ it may cause the ball mill grinding "full" phenomenon. If the water into the grinding material is too much‚ you can reduce the feed rate of ball mill‚ dry grinding materials‚ strengthening ventilation in ball mill‚ and join the way such as grinding material
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