... ions. Hypothesis If we filter the Manchester drinking water, the water will have less ions like calcium, chloride, and iron because it has gone through the process of filtration with the Brita filter to remove chlorine , odor, zinc, and harmful contaminants like copper, mercury and cadmium. Materials: Sterilized beakers Brita Pacifica ... filtered Na2co3:Sodium Carbonate + Calcium ion: Unfiltered (A): cloudy white Filtered (A): cloudy white Unfiltered (B): cloudy white Filtered (B): cloudy white Unfiltered (C): cloudy white Filtered (C): cloudy white This data picture for the filtered an...

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• Has Bibliography
• Grade Level: High School

... activated alumina. These desiccants are used to eliminate moisture or other impurities from gas streams. Once the desiccant is saturated with moisture, it can be recycled through a process of regeneration. The regeneration process is a form of drying, in which water or some other liquid is evaporated from a solid material to reduce the content of liquid to some acceptable value. During ... on the surface: dw/dt = htAt = kgλAp This equation will be used to analyze the data that will be collected and aid in the final industrial scale-up design. FIGURE 1: Process Flow Diagram INSERT ...

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• Grade Level: High School

... to the water was the difficult part of the experiment. In order to determine the effects of the type and amount of soil used, the process was simple enough. I placed the particular soil sample in a coffee filter, then strained one hundred milliliters of water through the filter. In order ... to keep the exposure time as constant as possible, I would squeeze the water, in essence "ringing" the coffee filter to speed the process. To explore the variable of time, a new method was required, though. For this portion of the experiment, the soil was poured directly into the ... more opportuni...

• Word Count: 2074
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• Grade Level: High School

... statistics are complete, the volume of oil spilled in U.S. waters declined by two-thirds compared to the year before, representing the lowest amount recorded since the Coast Guard began publishing data in 1973. And more than three-fourths of those spills were under 10 gallons -- less than a car's fuel tank holds. Even as the industry strives to reduce the number and ... the U.S. Coast Guard and U.S. Environmental Protection Agency and is an important yardstick in measuring the industry's progress in protecting the environment. Based on data from the U.S. Coast Guard, most spills that oc...

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Purpose The purpose of this experiment was to determine the percent of sulfate ion in an unknown sample through the process of digestion. Each person in the lab section did the experiment and gained a percent of the sulfate ion. Then statistics was used to compare ... and multiplied by 100 percent the random error can be calculated. The calculations of percent sulfate were determined for the whole class and then statistical treatment of the data was done to determine how close the experiment actually yielded correct answers. Procedure A clean dry watch glass was weighed to the nearest .001g a...

• Word Count: 1417
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... liter of water. Table A Concentration mg/L CaCO3 Description 0 - 75 soft 75 - 150 moderately hard 150 - 300 hard 300 and up very hard This data is used as a guideline for people to determine how hard/soft the water is. An experimental procedure in Penn State's version of Chemtrek August 2000-July 2001 on ... The EDTA testing is not as accurate as the AA testing because the EDTA testing is completely done by human calculation and observation. During the titration process, there could have been contamination in the wells and/or the pipets, which we were using in the experiment. Also, the o...

• Word Count: 2264
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• Grade Level: High School

... electrical signals to each other cells. Diffusion tells embryonic cells where to move and when to stop (Angeli, 2010). Additionally, the diffusion of water through a membrane is such an important process, that it has earned it's own term. The spontaneous net movement of water across a semipermeable membrane from a region of low solute concentration to a solution with a high solute concentration, down a ... Five: Beakers A and B were left to stand overnight and any observed changes in appearance were recorded after a twenty four hour period. Results Lab 3A: Osmosis and Diffusion Observat...

• Word Count: 1659
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• Grade Level: High School

... off as it carries on photosynthesis will be released into the water. Temperature affects the rate of chemical reactions and is important in the light - dependent stage of the photosynthetic process because the reactions are enzyme controlled. In temperate climates, the optimum temperature for photosynthesis is about 25°C. As the temperature is increased, molecules in the cells will be moving ... as this will cause a short circuit leading to casualties. The Elodea plant is put back into its pond water after it has been experimented with each temperature. Tabulation of Raw Data: Effect o...

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• Grade Level: High School

... on a whim, but that is honestly how I came to it. I really do not have an excessively scientific background, so I am not overly aware of all the factors that go into a process like this. So my hypothesis was based on a general conjecture. Also I had heard that some of these worms have a tendency to lacerate under low salinity conditions, so I figured that would ... happens until equilibrium is reached, and in this experiment, it appeared for a moment as if that occurred, but the worms either died or continued decreasing in volume. Looking at the data, Goliath met his demise in a very ba...

• Word Count: 1969
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• Grade Level: High School

... annual divertible resource of 7700 m per capita. This represents about 25% of the combined mean annual surface runoff and groundwater recharge. Falkenmark and Lindh (1993) through studies found this data and attempted comparisons with other countries failing due to lacking research. Water use within Australia: Australia overall is a dry continent experiencing marked variability or rainfall and runoff, both within and ... use efficiencies listed are all attainable with present technology. Benefits to the consumers and the water companies vastly outweigh costs involved in the installation...

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... distilled water has increased, decreased or stayed the same. Date was then collaborated with the rest of class. Results Quantitative observation The experimental results displayed in the table below provide data which allow for the determination of the rate of osmosis. Average distance travelled (mm) Time (mins) 10% glucose 20% glucose 30% glucose Trial 1 Trial 2 Trial 1 Trail 2 Trial 1 Trial 2 0 0 0 0 0 ... 0 Noting happened Noting happened Noting happened Noting happened Noting happened Noting happened 10 The concentrated glucose diminutively started increasing 20 Concentrated glucose ...

• Word Count: 1575
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... or "distilled drinking water-). Reverse osmosis Since Reverse Osmosis is the primary technology used to purify water for Dasani, it is necessary to understand what it means. Reverse Osmosis is a process of forcing tap water through a semi-permeable membrane, leaving dissolved solids, chemicals, low levels of bacteria and many other impurities behind. These impurities are rinsed away, resulting in clean ... and protective of public health as U.S. Environmental Protection Agency standards for public water systems. • Good Manufacturing Practices (GMPs), that cover everything from the plan...

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• Grade Level: High School

... those five peoples together and requires that they find a common solution of sharing resources and joint development (Shuval H. 1994). Integrated Water Resources Management (IWRM) is "a process which promotes the coordinated development and management of water, land and related resources, in order to maximize the resultant economic and social welfare in an equitable manner without compromising the ... of them failed or were hardly established because of the multifarious geographical, territorial, hydrological and political scheme of that region. IWM of an international river preamble sha...

• Word Count: 1957
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• Has Bibliography
• Grade Level: Graduate

... introducing modern contaminants. The potential is monumental for gained knowledge on microbial evolution, the discovery of new organisms and enzymes with potential value to society, and the ability to correlate data with that of other plants under similar conditions" (Columbia University, 2003). To solve the problem of contamination of the Lake scientists have hypothesized a near solution. A larger "cryobot" is made in ... lake will be emptied of its original water and be filled with new. Lake Vostok however takes roughly 13,300 years to remove the entire contents of the lake. This proc...

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... vary due to a combination of reasons, and health problems that develop may be specific to a particular region. This makes devising a conclusion about mercury levels across Canada difficult because data gathered is not always comparable (Environment Canada 2003). Canada wide standards have been in development since 1998 (CCME 2004). There purpose is to aid in the management of mercury in ... that emits pollutants into the atmosphere (Environment Canada 2003). In my opinion there needs to be a global standard on allowable levels of mercury emissions. Mercury is a chemical that exhibits a p...

• Word Count: 1798
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• Grade Level: Undergraduate

... of our economy? The answer to this question is slowly leaning towards hydraulic fracturing. Hydraulic fracturing or also known as "fracking" is a process in which high-pressure water with additives is used to increase fissures in a rock to extract oil or gas (Howarth). Even though fracking is ... of this potentially dangerous industry for mere economical reasons. On the subject of water pollution, what becomes of the water that is used in the process of pressurizing rocks? Each fracking site uses up to 1-8 million gallons of water (Fox). Water is a very valuable resource and is becoming...

• Word Count: 1859
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• Grade Level: Undergraduate

... water. This fact indicates the rapid recycling of water that occurs between the earth's surface and the atmosphere. Water is transferred from the surface to the atmosphere through evaporation, the process by which water changes from a liquid to a gas. Approximately 80% of all evaporation is from the oceans, with the remaining 20% coming from inland water and vegetation. Winds transport the ... less dense than the surrounding air and begins to rise. The bubble of relatively warm air that rises upward from the surface is called a "thermal". In hurricanes, condensation occurs through a pro...

• Word Count: 1332
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... are in a special shape which enables the hydrogen peroxide molecule to fit into it and cause it to become broken, speeding up the reaction. The catalase (or other enzymes) cause a process were big molecules are broken down into smaller ones, this is called Catabolic. If the temperature is too high the enzymes will be denatured because the special receptors will become ... from 20°C to 30°C. I have also found that at around the start each experiment most oxygen is produced and at the end least oxygen is produced. Recording of data Minutes 20°C 30°C 40°C 5 13.2 21.6 23.9 This table s...

• Word Count: 2395
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... of the Northeast. It now covers half the continent. This can be correlated to the increase in cancer cases, birth defects, or genetic imbalances. Statistics Although there is very little data, evidence indicates that in the last twenty to thirty years the acidity of rain has increased in many parts of the United States. Presently, the United States annually discharges more ... and concrete structures, and corroding the pipes that channel the water away to the lakes. Paint jobs are frequent due to the acid in the rain, speeding up the corrosion process. In some communities the drinking w...

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... and land" (Gannon p- 425). In 1847, the Secretary of Treasury appointed Buckingham Smith to study the geography of the Everglades region and the feasibility of draining them. He collected his data from military engineers and determined that the land could be used for agricultural reasons. Prior to moving forward with the project the money needed would not be provided by the ... of the south- east into farmland. Mew levees and pumping stations permitted massive profits, while the federal government provided generous subsidies to sugar growers. By the 1980's the accelerated aging process ...

• Word Count: 1737
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• Grade Level: High School