...Solution and Advantages Derrick L. Catley Strayer University Professor Dimetri Richardson ENG 215 February 21, 2013 Is Hydraulic Fracking the Answer For the Future Some may say that hydraulic fracturing is the key to our future. Various people say that it will give America a secure energy future. A number of people say it is a step to energy independence. Others say that it is a threat to our society, environment, and our water supply. Others also say that it can cause major damage to home and areas in and around the fracturing sites. Corporations and many in the legislative branch want to see hydraulic fracturing as a major part of America moving forward towards energy independence. For the majority of individuals, the good outweighs the bad. The people in and around these fracturing sites tend to disagree. Logically, this would be the thing to do if safety measures were to be tightened. Ethically, they have to think of the dangers that it can pose to humans, wildlife, and the water supply. This is a very emotional subject to the people that live within the boundaries of the danger zone involved with hydraulic fracturing. Hydraulic fracturing regulations should be changed because blowout, gas leaks, and home explosions can occur during hydraulic fracturing undertakings (Ehrenberg, 2012). With hydraulic fracturing being a major contributor to earthquakes, gas leaks, contaminated drinking water, and various other catastrophes, it is easy...
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...Solutions to Grooming Teens for Adulthood Reasoning and Problem Solving CST 1 November 30, 2009 To solve a problem one must often dive beneath the surface of the reflected obvious to reveal the rest of the issue hidden in the depths below. In Task one for this course the question of what is the best way to prepare teen’s for a successful adulthood has been addressed through several viewpoints and approaches. Just as there are multiple approaches in rearing children, there does not appear to be a single solution to the problem. Upon investigation it quickly becomes apparent that various groups can look at the same issue and will ultimately form different solutions that reflect their own skew on the problem. A closer look at example solution’s utilizing life skills through school settings, community resources, and Socratic home environments will demonstrate this concept. As an educator I believe that preparation is gleaned through understanding and understanding is gleaned from education. My solution would involve taking an active approach in educating the future educator by preparing the young to facilitate life skills for themselves and their own children one day. Equipping children with life applications of what they potentially will face as an adult is much like training a soldier for battle. Our county does not expect our military personnel to enlist and not receive training for what they will expect to encounter. Our children should not...
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...just enough hot solvent to it to completely dissolve it. The flask then contains a hot solution, in which solute molecules - both the desired compound and impurities - move freely among the hot solvent molecules. As the solution cools, the solvent can no longer hold all of the solute molecules, and they begin to leave the solution and form solid crystals. During this cooling, each solute molecule in turn approaches a growing crystal and rests on the crystal surface. If the geometry of the molecule fits that of the crystal, it will be more likely to remain on the crystal than it is to go back into the solution. Therefore, each growing crystal consists of only one type of molecule, the solute. After the solution has come to room temperature, it is carefully set in an ice bath to complete the crystallization process. The chilled solution is then filtered to isolate the pure crystals and the crystals are rinsed with chilled solvent. How To Do a Crystallization : Heat some solvent to boiling (remember to use a boiling chip). Place the solid to be recrystallized in an Erlenmeyer flask. Pour a small amount of the hot solvent into the flask containing the solid. Swirl the flask to dissolve the solid. Place the flask on the steam bath to keep the solution warm. If the solid is still not dissolved, add a tiny amount more solvent and swirl again. When the solid is all in solution, set it on the bench top. Do not disturb it! After a while, crystals should appear in...
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...Recrystallization Par, B., Ramos, S., Reynaldo, H., Roque, P., Servidad, Y., and Soriente, P. 2D-Pharmacy, Group No. 7, Department of Pharmacy, Faculty of Pharmacy, University of Santo Tomas, España Boulevard, 1015 Manila, Philippines Abstract Recrystallization is the primary method of purification used to isolate organic compounds in a supersaturated solution by the difference of solubility at different temperature that results to the separation of the compound from the solution. The purpose of this experiment is to synthesize acetanilide by the acetylation of aniline and to obtain pure acetanilide by purification of the collected crude acetanilide by crystallization. The recrystallizing solvent was chosen among ethanol, water and hexane. The acetanilide was synthesized and formed by acetylation of aniline and acetic anhydride, and it was then cooled to hasten the formation of crystals. After cooling, the mixture was filtered and dried to obtain the crude acetanilide. The crude acetanilide and the chosen recrystallizing solvent was mixed and heated in the water bath until the solid dissolved. The solution was filtered while hot and its filtrate was cooled in an ice bath. The filtrate was then filtered to collect the crystal residue formed. The crystals were washed with distilled water and allowed to dry to obtain the pure acetanilide. The weight of pure acetanilide was measured and the melting point of the pure acetanilide was determined. Based on the results obtained...
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...Leading companies and agencies rely on our products and services. So why not follow their example. By working with E-circle you gain access to comprehensive know-how in newsletter management and mail outs as well as the right to use one of the most powerful technological solutions in the world. We say ‘powerful’ because eC-messenger is capable of sending out three million emails an hour. It is therefore suitable for all companies, regardless of size. Our solution stands out not only in terms of quantity, but also quality. Also, to ensure that you are always on the right side of the law, we have incorporated extensive anti-spam functions into our ASP solution. E-circle Adds to these advantages by offering extensive support and consulting services: Your personal project support manager will gladly answer any questions you have about eC-messenger. If you wish, our expert consultants can also provide you with a customized email marketing strategy suitable for your company. Benefits of E Circle You have access to our comprehensive knowledge in newsletter management and mail outs. You can use one of the most powerful mailing solutions in the world, as shown by independent international studies. The entire solution is flexible, can be adapted to your requirements and implemented within a matter of days. You will be assigned a personal support agent for any inquiries or feedback. If you want, we can also handle your entire newsletter management including mail outs and reporting. You...
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...Detailed Lesson Plan (Grade 7) 1. Objectives After providing the necessary materials, each student; 1.1 investigates the different types of solutions: -unsaturated -saturated -supersaturated 1.2 performs an actual activity about solubility. 1.3 values the common solutions that can be found at home and can be used in daily living. 1. Learning Tasks 2.1 Topic: Solutions 2.2 Concept: The unsaturated solution has a less amount of solute to be dissolved. The saturated solution can hold no more solute to be dissolved. The supersaturated solution cannot hold more solute. 2.3 Materials 2.3.1 Textbook/Other Reference -Science Grade 7: Matter (K-12 Curriculum), pages 1-16 - http://www.infoplease.com/encyclopedia/science/solution-heat-solution.html 2.3.2 Instructional Materials - video clips, materials enumerated for the experiment and activity sheet. 2. Methodology 3.1 Daily Activities 3.1.1 Prayer/ Greetings Christ Jesus Whom we open our eyes, may you be there; When we open our ears, may you be there; When we open our mouths, may you be there; When we open our diaries, may you be there. Help us to see with your eyes; Help us to hear with your ears; Help us to speak your truth in love; Help us to make time for you… for others… for ourselves. Amen. 3.1.2 Checking of Attendance 3.1.3 Checking of Assignment 3.2 Preparatory Activities 3.2.1 Review Teacher: Class...
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...Osmosis Introduction: Tissues are made up of cells that have the same structure and function. In this experiment osmosis will be measured in a piece of tissue. Water potential can be determined by the changes in dimensions of the tissues when it is placed in solutions of different concentrations. Research Question: What is the effect of sucrose solution on potato cells Hypothesis: Osmosis will increase when the solutions are less concentrated with sucrose Variables: Dependant: Osmosis Independent: Length Materials: 12 large test tubes or specimen tubes with bungs, marker pen, potato chip cutter, scalpel, fine forceps, 3 watch glasses or petri dishes, ruler, 6 labeled beakers one containing 50cm^3 of distilled water and other four containing 50cm^3 of 0.2 mol dm^-3, 0.4 mol dm^-3, 0.6 mol dm^-3 and 0.8 mol dm^-3. Method: 1- Using the potato chip cutter, cut 24 chips from the potato. Cut the chips into 5cm lengths using the scalpel. Be as accurate as possible. Place 4 chips into each of six, labeled test tubes, one test tube for each of the different sucrose solutions. Pour in enough of each respective solution to cover the potato tissue. Put a bung in each one of the test tubes and label this series “potato”. 2- Repeat the method using the apple fruit or turnip root, putting four chips of tissue 5cm long into each of the second series of test tubes. Label these tubes “apple” or “turnip”. 3- Leave the tubes for at least an hour 4- After at least...
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...FUNDAMENTALS OF SURFACE MODES: ¥ COLLOIDS ¥ means ÒglueÓ in Greek ¥ was coined in 1861 by Thomas Graham. ¥ ¥ ¥ ¥ ¥ WHAT IS A COLLOID? usually consists of two phases; one continuous phase in which the other phase is dispersed. Size of particles: larger than the size of molecules and small enough for the dispersed phase to stay suspended for a longer period of time. ¥ No strict boundaries for the size limits. OFFICIAL DEFINITION ¥ In 1903 Wolfgang Ostwald formulated the official definition of a colloid: ¥ a system containing entities having at least one length scale in between 1nm and 1µm. ¥ For smaller particles there is no distinct boundaries between the phases and the system is considered a solution; ¥ for larger entities the particles will fall to the bottom due to the gravitational force, and the phases are separated. 1 2 3 MESOSCOPIC PHYSICS ¥ The particle size is in the so-called mesoscopic range in between the macroscopic and microscopic limits. LARGE INTERFACIAL AREA ¥ One very important quality of the colloids is the large interfacial area between the dispersed and the continuous phases. WHAT EFFECTS HAS THIS? ¥ This means that interface effects and hence the electromagnetic surface modes, are very important for the properties of the colloids. ¥ It costs energy to create this much surface and the particles would clump together if this isnÕt prevented. ¥ Usually the particles are charged and hence repel each other. 5 6 4 Four states...
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...encouraged to ask question/s that is related to this module and that you don’t know the answer to and want it to be answered. The question/s can be answered by anyone in class. The instructor will allow sometime for other students to answer the question/s before contributing. You can post your questions in MODULE 2 forum under the Discussion Forums. Complete Assignment #2. The assignments are posted in the ASSIGNMENTS area of the website. Even though the homework assignments are not to be turned in and graded, you are strongly encouraged to do them to understand the material and to prepare for quizzes and tests. A complete solution to this assignment will be posted on the course website under ASSIGNMENTS on Thursday (Sept 4th). You are encouraged to review the solutions and compare your work to the solution, ensuring that you understand the reasons the solutions appear as they do. You are also encouraged...
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... * Has no secretary The most important problem would be catching the flight for the meeting in Chicago since it’s an emergency and work related. Solutions: Getting work done for the day on the air plane on the way to the meeting. Call the secretary to find out at least some of the info for the meeting. Item#2 Problems: * Internal politicking in the company * Finding someone to replace F.T. Dickenson * Dealing with eliminating his overtime hours The two most important problems would the politicking, because someone else may feel the same way and decide to leave the company too. Also, finding someone to replace him and do his unfinished work in such a short period of time. Solution: Search for a new employee ASAP. Item#3 Problems: * Workers threatening to walk out over a co-worker * 10 votes to dismiss Foreman Edward George The workers are the most important asset to the company, so their interest should be first. Second, you have to figure out what to do about the votes to dismiss Ed George. Solutions: Talk to Ed George about his problems with his co-workers. Hold a meeting and get even more workers involved in the voting process, the take another vote. Item#4 Problems: * Overloading which can result in interruption of electrical power. * Not being reachable for Southern Power Solution: Contact Southern Power ASAP. See if they could come out and help with the problem. Item#5 Problem: * Balancing your work and his until Wednesday ...
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...Name Date Class COLLIGATIVE PROPERTIES OF SOLUTIONS Section Review Objectives • Identify the three colligative properties of solutions • Describe why the vapor pressure, freezing point, and boiling point of a solution differ from those properties of the pure solvent. Vocabulary • colligative properties • freezing-point depression • boiling-point elevation Part A Completion Use this completion exercise to check your understanding of the concepts and terms that are introduced in this section. Each blank can be completed with a term, short phrase, or number. In a solution, the effects of a nonvolatile _______ on the properties of the solvent are called _______. They include _______ point and vapor pressure _______, and boiling point _______. In each case, the magnitude of the effect is _______ proportional to the number of solute molecules or ions present in the _______. Colligative properties are a function of the number of solute _______ in solution. For example, one mole of sodium chloride produces _______ as many particles in solution as one mole of sucrose and, thus, will depress the freezing point of water _______ as much. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Part B True-False Classify each of these statements as always true, AT; sometimes true, ST; or never true, NT. 11. When added to 1000 g of water, 2 moles of a solute will increase the boiling point by...
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... it increases the water movement out of the plant by a process called transpiration. When there is a shortage of water, the guard cells well get smaller and close the stomata, and the transpiration process will move slower. The osmolarity would be tested with solute concentrations ranging from 0.0 M to 0.6 M. The concentrations increased 0.1 M each time and the solute used was sucrose. The goal of this experiment was to determine which concentration had the least effect on the potato after being incubated. This information helped us estimate the osmolarity of the potato tuber tissue. Our group hypothesis is that the osmolarity of the potato will have the concentration with the 0.1 M solution. This hypothesis is based off the predicted outcome that smaller molarity concentrations will have the least effect on the potato. The more solute added to a solution decreases the concentration of water in most cases (Kosinski). The decrease in water concentration would then lead to a lower weight of the potato tuber once it has finished incubating. Methods & Materials: For experiment A you will need the following items: 1 large potato tuber Forceps petri dish razor blade DI water metric ruler 7 250 mL beakers/ or disposable cups balance that weighs to the nearest 0.01g sucrose...
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...The data solute concentration of the egg was found by taking the average percent change in mass for each percent solute concentration used in the lab and putting the data into the graph(Mass vs. Solute Concentration Over 3 Days). According to the data from the class, the solute concentration inside an egg is 25.1%. The egg would be in an isotonic solution at 25.1% solute concentration. This is when the concentration outside the egg is equal with the concentration of water inside the egg. The point of equilibrium is the point at which the trendline crosses the x-axis. At this point, the egg would no longer gain or lose mass. If the concentrations are the same inside and outside the egg, diffusion will not be able to take place. All averages...
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...Analysis of Carcinus maenas ingestion rates Materials and methods Part 1 - Control experiment Two mussels (mytilus edulis) were opened and the mussels inside cut into 4 pieces, producing 8 pieces of roughly equal size in total. A balance was then tared with a weighing boat placed on it. Each piece of mussel flesh was placed individually and in turn into the weighing boat to be weighed. The pieces were then placed into a plastic bucket half filled with filtered seawater. The weight, time of weighing and time of immersion into the bucket were all noted down for each piece of mussel. The position of each piece of flesh inside the bucket was also taken down so as not to mix them up. One of the eight pieces was left in the bucket for the duration of the experiment until being removed and weighed at the end and was written down as “the last”. Another piece was removed frequently throughout the experiment and was given the name “the one”. The last 6 pieces were each removed once and weighed at regular intervals to provide a range of submersion times. The experiment was run for roughly 20 minutes. The method for removing and weighing the pieces of mussel was kept consistent throughout the experiment. Each piece was removed, blotted clear of any excess water and weighed. If the piece of mussel was “the one”, it was returned to the bucket of seawater, if not, it was kept aside and moist for the crab feeding (Part 2). Once all of the pieces were removed and weighed (multiple times for “the...
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... The purpose of the experiment was to see how abrasion works and how it affects rocks and minerals with the use of sugar cubes. I measured the mass of all 5 sugar cubes together then placed it in a jar with a lid on and shook it 20 times, as I was shaking the jar my lab partner recorded the mass that was taking with the number of times I shake the jar. After which we drew the shape of the sugar cubes when it was poured out on a paper, then we calculated the percent change. This procedure was repeated 5 times and with each trial the shaking time was increased by 20. After all the calculations was done, we graphed the data. After each trial the size and mass of the sugar cubes reduced, this was due to the pressure put on the jar as we were shaking it. Supposing little pressure was put on the jar, the outcome would have been different and would have shown little abrasion effects on minerals and rock so therefore this made me conclude that, for abrasion to have a greater impact on minerals and rocks the pressure of the water or wind must be strong to push the minerals against each other. Another factor that contributes to how abrasion works could be the amount of space the minerals and rocks have because during the experiment, the sugar cubes pumped into each other and the walls of the jar and since there wasn’t enough space for movement the sugar cubes weathered and reduce in size with the mass decreasing which I believe wouldn’t occur if there were to be enough space for the sugar...
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