762 words - 4 pages
This world needs the good environment. People should protect our homestead. Society is focus on pollution in river all over the world. As we know water is spring of life. We can't live without it, and water in river is more important for human's daily life. It is a big problem. It is the major factories and industries that are causing the problem. We should find some good ways to prevention and mitigation. Let us to join protect action, in order to ourselves.Water pollution is a serious problem threatening the survival of human beings, plants and animals. It is urgent that some strong measures be adopted to deal with the problem. Most of them produce by the cities and towns. With the
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2378 words - 10 pages
Poland Spring Nature
Poland Spring Nature
Creative Work Plan
Natalie Dumanian (Advertising)
Key Facts about the brand:
Poland Spring is a very successful brand. It has been around since 1845. The company has become so well known from word of mouth and its large availability in many stores, restaurants, and vending machines to name a few. Since 1845 they have enlarged their line with larger and smaller sized bottles and have also created a sparkling flavored water line. Poland Spring has a very large target market. Globally they are targeted to the urban northeast. It is targeted to men, women, and children. Some of their products are even targeted to specific people. For
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493 words - 2 pages
Picture this… it's been a long day and you just got home from soccer practice. After continuous running, difficult drills, and conditioning, you're totally exhausted and you're so hot you could practically fill a bathtub with your sweat. Right now all you want to do is grab something to drink and take a cold shower. So you open the refrigerator to refresh yourself with an ice cold drink when you reach a problem - should you grab a water bottle or a can of soda? Your problem's solved my friend! Take the water bottle, I guarantee you'll be glad you did.Water is by far the best drink not only after sports, but also on any occasion. Comparing it with soda is like comparing gold to an old
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2894 words - 12 pages
Recommendation For Recycling Water in FloridaPrepared for: Tom Petty, Chairman Of The BoardDepartment Of Environmental Regulation Boardby:Environmental Specialist, Pasco County FloridaNovember 29, 1996ContentsAbstract..............................................................................................2Executive Summary...............................................................................3Introduction.........................................................................................4Methods..............................................................................................4Results
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460 words - 2 pages
Aim: Observing pond water.Materials: Microscope, slide of pond water, protests/monera handouts.Procedure:1. Collect microscope from trolley.2. Set up microscope and switch on the microscope light.3. Collect specimen and handouts.4. Sketch 4-6 different species on medium power setting.5. Try to estimate size of cells.Observations: I noticed that there was a lot of activity on the slide. There were many little circle-shaped things that were moving quickly all over the slide. I saw a limnocalanus on the slide, but it was dead. I also saw a tokophrya moving quickly across the field of view, as well as an oscillatoria, which was not moving at all. I saw a cocconeis that was moving steadily along
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2187 words - 9 pages
The Current State of Water Pollution
One of the most differentiating factors of the planet Earth is the abundant presence of water. The Earth is almost 75% water. The substantial amount of water on the planet allows the vast and diverse biotic population to thrive. Without water, none of the life on the planet would be living, Earth would look less green and blue, and more dry like Venus or Mars. However, one of the most prominent environmental epidemics is the pollution of the Earth’s water bodies. According to the WWF, water pollution is characterized by “toxic substances” entering water bodies, and then “getting dissolved in them, lying suspended in the water or depositing on the bed
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1138 words - 5 pages
Water Ethics
Imagine living without basic necessities such as the water you drink. This is the story of
many people who live in countries that are denied access to water because they can’t pay for it.
Water has been viewed as a commodity in countries such as the US and it is an industry that has
been capitalized therefore the prices have increased. Corporations often increase water rates for
capital gain, making it more inaccessible to destitute populations. Contrarily, it is a scarce
resource in most of the developing countries. Worldwide more than 1 billion people still do not
have access to safe drinking water. This imbalance has posed for an objective to create a solution
where
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1296 words - 6 pages
SRP- Lamina Shawkat
Effects of salt on the surface tension of water
Introduction
What is surface tension? Surface tension is a phenomenon in which the surface of a liquid acts like a thin elastic sheet when it comes in contact with an external force, such as a gas like the air. This physical property allows the surface of a liquid to “resist” the pressure of the external force by reducing its interaction with the force.
What causes this layer to form upon water? atoms that make up water molecules are always at an unequal charge distribution causing a push and pull effect on their shared electrons. Oxygen has a stronger attraction to the shared electrons when compared to hydrogen. Thus, the
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1753 words - 8 pages
Water Crisis in Flint, Michigan.
Water Crisis in Flint, Michigan.
A federal state of emergency was declared by former president Barack Obama after a public health crisis emerged in Flint, Michigan in April 2014. The massive health crisis initially arose when the city switched their water supply from Lake Huron to Flint River and disastrous levels of lead were found in the city's drinking water. This was a caustic source of water supply that was immediately detected by the Flint residents who had become aware of this issue due to the taste and scent of the water. The importance of this endemic is indescribable as water is essential to human life, therefore, fixing the water system and
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1329 words - 6 pages
Running head: Contaminated Water Source Case Study
1
Contaminated Water Source Case Study
2
Contaminated Water Source Case Study
Bo Zhang
2019/04/29
Fisher College
Background
Due to a 4-Methylcyclohexane Methanol spill on the Elk river, it left about 300,000 people out of domestic water supply. The contaminates influenced 9 counties and cause schools and businesses shut down. According to a Reuters report, contaminate chemical product is leaked from tank running by Freedom Industries. On their website, they describe themselves as a producer of specialty chemicals for the mining, steel, and cement industries. The leaked chemical penetrated through the soil and migrated into the river, one
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2741 words - 11 pages
Abstract
This experiment investigates how changing the temperature of water will affect the rate of osmosis of water into the potato cubes. This relates to a specific biological process in the body such as osmosis of water between the extracellular fluid of blood and the red blood cells. By investigating, the effect of temperature on this process of osmosis will allow better understanding and ultimately answering the question of- how does changing human body temperature (eg. fever, hypothermia, hyperthermia) effect hydration levels of red blood cells in the body? It is hypothesised that increasing the temperature will cause the rate of osmosis to increase at a faster rate due to the
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766 words - 4 pages
Tradition is said to denote "to hand down" or "to hand over". These are the beliefs and customs passed down by parents to their children and what these children pass down to their children, stretching on to many generations until is it forgotten or lost. It is usually a way or custom the family has upheld proudly through many years, in the film Like Water for Chocolate though we see the main character of Tita being ultimately restricted by her Mama Elena's "traditions". It is her mother's reasoning that as tradition dictates Tita as the youngest in the family she shall have to remain unmarried and to care for her mother, this ultimately bars Tita from being with the man she loves and thus
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8971 words - 36 pages
1. IntroductionThe following report illustrates the development of Black Water Rafting which is an adventure cave tubing trip company in the district of Waitamo, New Zealand. BWR was created in October on 1987 by John Ash who was 52 and Peter Chandler who was 37 as the New Zealand's first cave tubing/rafting tour.The report will initially analyse the organisation's non-existent mission statement. Following this it appreciate the internal and external context of the business demonstrating the analysis of the resources and environment that the organisation has. Following this, future potential strategies will be identified.Concluding the report…2. Internal environment2.1. Mission
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518 words - 3 pages
Description: Water scarcity is one of the key environmental issues of our time. Identify some major causes of water scarcity and describe two solutions.
Water scarcity is now one of the most key environmental issues that we need to solve. The water supply from nature is not exhaustible and water is always in great demand. Therefore, this report will point out some causes and show two solutions to deal with the lack of water: seawater desalination; government rules and regulations.
The first reason leading to the shortage of water is climate change. A precipitation is not enough water for people to irrigate or even being enough, it still does not satisfy water after long-time drought
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1780 words - 8 pages
Water Pollution
When the water in our rivers, lakes, and oceans becomes polluted it can endanger
wildlife, make our drinking water unsafe, and threaten the waters where we swim and
fish. Some people believe that the pollution of our lakes and rivers is not a problem right
now and is a problem for the future that modern technology will be able to fix, wrong.
According to P. K. Goel author of the book Water Pollution: Causes, Effects and Control,
“Most of the wastewater, statistics indicate around 60% of it, is discharged into rivers
without being treated” (Goel). This is a high pollution of the environment and also a big
health risk to the people who rely on the water downstream. Water
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673 words - 3 pages
Title:
Paper on Water Cup Inversion Experiment
Submitted By: Theodore Xavier Pueda
Submitted to: Mr. Roach
Title: Paper on Water Cup Inversion Experiment
Testable Question: Does the volume of water affect the time for paper to drop from cup?
Hypothesis: As the volume of water increases, the time for the paper to fall off the cup stays the same.
Experimental Design: Different volumes of room temperature water will be poured 9 similar cups, starting with 10 mL and increasing by 10 mL each time. A piece of paper will be placed on top of the cup and the cup will be inverted.
Independent Variable: Volume of Water (mL)
Dependent Variable: Volume of cup (mL)
Rim diameter of cup (cm)
Temperature
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5934 words - 24 pages
Running head: WATER SUPPLY AND IRRIGATION INDUSTRY REPORT 1
WATER SUPPLY AND IRRIGATION INDUSTRY REPORT 5
Water Supply and Irrigation Industry Report
Perry Francois
Environmental Regulation
Abstract
The report focuses on the Water Supply and Irrigation industry in the US. It highlights the roles that the industry has played as far as environmental issues are concerned. The report delves on the environmental impact of the activities of the industry and the steps the industry players have taken over a period of time to alleviate the negative impact associated to emissions, hazardous pollutant dischargers in water and agrochemicals control
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784 words - 4 pages
Sophie W.
CIS English 6th Hour
Mr. Jacobs
November 16, 2016
Water, Control, and Homosexuality in Giovanni’s Room
In Giovanni’s Room, David’s association of water with Giovanni, as well as his ideas
surrounding water and the ocean, reveal his fears about his homosexuality. Water imagery plays
a significant role in the novel. It is usually tied to Giovanni or another non-heterosexual character
and almost always carries a negative connotation. This negative attitude toward water and
homosexuality is contrasted with David’s desire for a woman to be like land for him. Overall, the
contexts in which Baldwin places water imagery and the aspects of water that he emphasizes are
significant
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906 words - 4 pages
Page of
1
Diorico
Khristian Diorico
Ms. Woods
ENG 4U1
July 5th, 2019
America’s Crisis?
The United States of America, the greatest nation in the world, or so we say. In Fahrenheit 11/9, written and produced by Michael Moore, Moore speaks on the state of American politics, and how it has fallen. By the end of the movie, Moore explicitly deduces his thesis to be that the whole system of America, right down to the constitution is what is wrong with the nation. Moore does this in a very serious yet humorous tone. He talks about many serious topics like the Flint water crisis or how Trump is a misogynistic and racist narcissist. However, Moore adds character to the story through the use of humor
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714 words - 3 pages
Water for Elephants
The memories that dwell in Jacob Jankowski’s ninety or ninety three year old mind have remained hidden for decades. Only in his dreams do these memories resurface. The book, Water For Elephants, by Sara Gruen, is a very well written book. The story is full of unique characters, and revolves around the complex love between two men, a woman, and an elephant. I would recommend this novel to people who are not only interested in the circus, but those who love a good book.
Themes such as love are evident when reading Water for Elephants, and are an important part of the book. This is shown when Jacob falls in love with Marlena, and then the troubles Jacob has to go through
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2224 words - 9 pages
T. T. Hwara 1 10 17 9 2 8 5
Assessment 3:
Research Essay
(COMM 2060)
Hwara Takudzwa, Talent
3. Discuss the role of Indigenous people and traditional ecological knowledge in land, water and/or biodiversity conservation now and in the past – use particular examples.
During the course of this study, we as students were acquainted with the substantial knowledge essential to the
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699 words - 3 pages
isolate me by the doctors, so they took me to my room and locked it so I would not be able to leave. When I was going to my room I saw my Father. The doctors were draining my Father of blood to balance his health and some doctors were also cutting the infected area to remove the bad blood. I’m worried I’m going to become an orphan.
Love, Ivy x
28th November 1348
I have been locked in my room for over a week and I’m scared. They have only been unlocking the doors to give me food and water. Today, the strangest thing happen my Father was on the other side of the door and he started to talk to me. He was confessing everything to that had been happening. I felt awkward when Father was talking to me
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1236 words - 5 pages
Literary Analysis
The memoir The Color of Water: A Black Man's Tribute to His White Mother, written by
James McBride, is filled with deep meanings as well as thought provoking concepts and themes.
These include self-motivation, self-reliance, and repressing one’s feelings, emotions, and secrets;
all of which are demonstrated in the story of a black child named James and his white mother,
Ruth. Although the memoir is full of layers and leaves room for differences in perception and
interpretation of its ideas, one theme in particular stands out above the others: adversities as a
result of differences in race and religion. While both Ruth and James had to cope with the
struggles of racism
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1126 words - 5 pages
Year 9 Humanities Assessment #1
Create Your Own Business Part 1
This is the first part of a 3-part assessment task which will equal your entire mark for the term. You may work independently or in a pair. No groups of 3+ will be permitted.
For this assessment you will be required to develop and construct a business plan for a new business of your own. In your submission, you must include the following:
· An original idea.
· A detailed discussion of what your product is and why it is unique in the market.
· Why people would buy your product over other similar products.
· How you intend to sell your idea – online, small store, etc.
· What forms of advertising you intend to use
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506 words - 3 pages
A nutrient is any food substance that is necessary for contributing to an organism's growth and metabolism. There are 6 nutrient groups, classified as those that provide energy and others that support metabolic processes in our body. Some of these are very important because they cannot be produced in the body and have to be taken from a food source. Nutrition is the taking in and use of nourishing materials by the body. Different organisms have different ways to take in nutrients, like plants taking nutrients through photosynthesis and the use of their roots. Nutrition is also a science that focuses and studies the relationship between diet, health and disease. For example, deficiencies and
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498 words - 2 pages
Bio Seminar Script
Emma Kerr
Serotonin:
Both serotonin and melatonin shape our personalities, and how we react to the situations around us. Along with dopamine and norepinephrine, serotonin is also a chemical manifestation of our personality. Serotonin is more complicated than dopamine and norepinephrine in that it is significantly harder to determine its characteristics. If you have extremely high levels, you are more inclined to be a compulsive person; obsessed with tidiness and caution almost to a neurotic point. Individuals with OCD, or Obsessive-Compulsive Disorder are said to have very high levels. On the other side of the spectrum individuals with extremely low levels are said to be
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463 words - 2 pages
Let’s start of with the fact that I was talking to my parents about this and they had said that slowly niceala and Marie will leave. I told them no that is not true that is bot niceals person and that she wouldn’t really do that. Generally, I am always right when come to my parents but sadly you are were this cycle ends. This is what hurts the most my parents talked to me and they warned me about this exact situation. But I was being naive and stupid.
1) I really don’t know what to say so many things are on my mind because like what is this was I just there to be used as your friend only when you needed me like what am I you. I’ve already been broken down by Marie I really don’t want or need
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704 words - 3 pages
By Casey Sloane
The Tempest Speech
Individuals understanding of discovery through the process of responding to texts, shapes their knowledge to determine the authenticity of the discovery. Can a discovery still be authentic if it’s not an epiphany. “The Tempest”, a tragicomedy play by William Shakespeare, Explores the significance of Prospero’s re-evaluation of his humanity leading to his own self-discovery. Similarly, Gwen Harwood’s poem “Barn Owl” investigates the lost innocence of the child and the reconsidering of human nature. Through characterisation, both Shakespeare and Harwood give the audience insight into how discoveries can be formulated progressively and however can still be as
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522 words - 3 pages
Branden Bourgeois
Ms. Valentine
English III - 7
28 January 2019
Winning Isn’t Everything
There is a lot of ways a person can interpret the word winning, for example this football coach
stated “Winning isn’t everything, it’s the only thing.” However, I would have to disagree with
this statement because winning to me isn’t everything. I would even go as far as to say winning
is not just for the sake of who’s better or not, sure it does have its benefits like bragging rights
and such. But that’s not the main point in my opinion as this quote stated it was. I feel like the
most important thing that results from winning is not even winning, what matters the most is
how hard the coach’s team tries
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410 words - 2 pages
3HRC - Understanding Organisations and the Role of Human Resources
Activity 1.1
The main purpose of Thames Water is to provide its 6 million customers with wholesome water and waste water services 365 days of the year. With millions of customers relying on safe clean drinking water every day, their goal is to be the most respected utility by 2022. To achieve their goal they are investing millions of pounds every year into their network infrastructure, upgrading old risk mains trunks and installing advanced technological devices into the network which will enable them to provide the best customer service 24/7.
Activity 1.2
Thames water are the UK’s largest Water and Waste Water services
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1309 words - 6 pages
Transpiration is the process that allows plants to release H20 in the form of water vapor into the atmosphere. This process mostly occurs during the time the stomata, the microscopic pores on the surface of a leaf, are open for the passage of CO2 and O2. Transpiration plays a huge role for plants, as 90% of the water that enters the plant is through transpiration. It also allows the plant to receive key nutrients and minerals in order to survive. By transpiring, or evaporating, it causes the plant to suck up more water from its roots, causing a constant flow of water through the plant, which is optimal for survival. If transpiring were to terminate, then the plant would continue to
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1563 words - 7 pages
Water is an essential commodity for human existence. It is used for consumption, maintaining public health, agriculture, industry, and for transportation. Serious water scarcities will affect virtually every aspect of human life. Water resources are enormously skewed geographically, and many countries with lower water availability also have high rates of population growth. This will exacerbate their water shortage in the future.Many countries are also highly dependent on water that originates outside their borders. For a country, the threat of having its water supply severely constrained by another state may seem threatening, and may even lead to war. It is amongst the commodities that
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426 words - 2 pages
Richard KazmiMr.HickeyChemistry3/19/13Calorimetry Lab ReportPurpose: Calorimetry is the measurement of the heat flow into or out of a system for chemical and physical purposes. The purpose of this lab was to use calorimetry to find how much heat is absorbed or released when NaCl is dissolved in water. In this case, we will find the heat coming out of the system, in a chemical process.Hypothesis: Once the sodium chloride is put into the water, the temperature of the water will rise.Procedure:1. Fill up a beaker with 25ml water2. Pour water into Calorimeter (we had 35 ml)3. Put in 2 grams of NaCl4. Close the top5. Put in Thermometer6. Record starting temperature7. Use the stirrer to help stir
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954 words - 4 pages
Water Polo
Harry Peterson
10 Benefits Of Playing Water Polo:
● Burns calories – When you play water polo, you are guaranteed a non-stop, fat-burning workout. While in the water,
you are not allowed to touch the bottom of the pool, as it is one of the main rules of the game. This means your legs
must be kicking constantly, treading water, in order to keep your upper body above water so that you may continue to
play the game. This constant movement burns calories and helps lead to weight loss.
● Cardio workout – All of this movement gets your heart pumping! To ensure proper heart health, one must partake in
cardio workouts for at least 30 minutes each day. Getting your heart pumping higher
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460 words - 2 pages
greatly reduced. The only solution is to plant trees with strong roots in an effort to hold the soil togeth. . .It occurs when large amounts of chemicals such as phosphates are put into the water from either industrial waste, fertilisers being washed by the rain into the water, or any other method the nutrients will either be used up, or heavy rain will wash them downstream, and the algae will die, and any surviving fish will return. However, when these trees are removed, rainfall causes the water table to rise, bringing with it dissolved salts from rocks deep under the earth. Eventually,Eutrophication is another form of land degradation. Underneath the soil is a layer of water called the water
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714 words - 3 pages
Bunsen Burner Efficiency
Journal of Chemical Education, Vol. 74 No. 2 February 1997
In this experiment, you will determine the efficiency of a Bunsen burner used to heat water.
Introduction
The burner most commonly used in laboratories today was developed in 1854 by Robert Bunsen, a German chemist, and his laboratory assistant, Peter Desaga. The Bunsen/Desaga design generates a hot, sootless, non-luminous flame by mixing the gas with air in a controlled fashion before combustion. The gas used in this laboratory is methane, CH4.
CH4(g) + 2 O2(g) ( CO2(g) + 2 H2O(l)
ΔHr = -802.3 kJ/mol
Not all of the heat given off by the burning methane is absorbed by the water. The efficiency of a
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996 words - 4 pages
XylemStructureXylem's structure serves a duel purpose; support and transport. Cells that will become xylem add more material to the primary cell walls that most plant cells lay down. The thicker walls can be either disconnected rings or extensive secondary cell walls that cover the cell almost completely. Secondary thickenings are made up of cellulose and lignin. Lignin is a tough organic compound that makes wood strong and dense. When the cell walls of xylem conducting cells are complete they die. The contents within the cell disintegrate and leave a strong hollow cylinder filled with water. Water can travel in kind of a straight line due to the fact that these cells are stacked on top of
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644 words - 3 pages
much smaller than freshwater diatoms; their increased surface area to volume ratio keeps them afloat. Additionally, marine diatoms have ornate spines that increase surface area. Many freshwater diatoms live in habitats where light penetrates to the bottom so sinking is not problematic. Freshwater diatoms lack the ornate spines frequently observed in marine diatoms because light penetrates to the bottom of the pond, stream, or puddle where they live.
· Body tissues in a saltwater fish contain less salt than the water in which it lives. The saltier environment draws water from its body tissues, resulting in constant water loss through its skin and gills. To compensate and prevent dehydration
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895 words - 4 pages
metal sample will be heated to a high temperature and then placed into a calorimeter containing a known quantity of water at a lower temperature. Having measured the mass of the water in the calorimeter and the temperature change of the water (ΔT), and knowing the specific heat of water (4.184 J/g °C), the heat gained by the water (lost by the metal) can be calculated as follows:
qwater = mwater * Cp-water * ΔTwater (eqn 1)
heat gained by the water = mass of water * specific heat of water * change in temperature
(J) (g) (4 .184 J/g °C) (°C)
As described in the abstract, the amount of heat gained by the water = the amount of heat lost by the metal:
qwater = qmetal (eqn 2
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660 words - 3 pages
Lab Report: Diffusion and OsmosisIntroduction:Atoms and molecules are constantly in motion. This kinetic energy causes the molecules to bump into each other and move in different directions. This motion is diffusion. Diffusion is the random movement of molecules from an area of higher concentration to an area of lower concentration. This will occur until the two areas reach a dynamic equilibrium.Osmosis is a special kind of diffusion in which water moves through a selectively permeable membrane. A selectively permeable membrane allows diffusion for only certain solutes (the substance being dissolved) and water, the most common solvent (a dissolving substance). The most common selectively
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524 words - 3 pages
Aim: To investigate the Latent Heat of Vaporisation of water. Independent Variables: voltage / energy Dependent Variables: temperatureControlled Variables: amount of water, voltage and currentWe won't consider uncertainties here since it is a planning lab.Hypotheses:The water will heat up at a quicker rate if a lot of energy is added instead of a small amount of energy. Due to the fact that the more energy one applies to the immersion heater, the more heat it will release into the water, increasing its temperature.To find the Latent Heat of vaporisation we need to rearrange this equation:∆m depends on the time; this is proven by this formula:Apparatus &
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444 words - 2 pages
Why did the Khmer empire fall?
There are many theories as to why the Khmer Empire
fell, however, there are no known reasons that can be
entirely proven. Some of the the most popular theories
from scholars are based on drought, inadequate road or
trade systems, religious change, military defeat, famine
and economic failure. Archaeologists have estimated the
time when the empire began to fall, they assume it was in
the year 1431.
Khmer empire losing control of water
The Khmer Empire had an excellent water management
system which consisted of reservoirs and canals which
were used for trade and travel, with traders traveling by
boats up and down the canal. They were also used for
drinking water
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523 words - 3 pages
Why are environmental impacts like that described in the Aral Sea becoming more common in the world? (10 Marks)
The shrinking of the Aral Sea is considered one of the most dramatic examples of a natural area destroyed by human activities.
For many years the use of water for irrigation and heavy use of insecticides and pesticides has brought not only the ecological, economic and social insecurity to the resident population, but also majorly affected human health. The biggest problem is in the impacts on health and wellbeing of the local population and the ecological balance in the region.
Around the world the water level in our water bodies in constantly rising or decreasing, in most areas
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349 words - 2 pages
) in the phloem vessels.The phloem transports substances using the pressure flow mechanism. This process requires cellular energy *(ATP). Sucrose is loaded into the phloem vessels against a concentration gradient by active transport using ATP. This increases the solute concentration in the phloem and as a result water moves into the phloem from the cells by osmosis. At the sugar sinks sucrose is removed from the phloem into the plant cells that require it. Water follows the sucrose from the phloem into the cells by osmosis.At one point of the phloem (sugar source) there is a large amount of solute concentration and a high water content. This exerts a high water (turgor) pressure or hydrostatic pressure. There is a low amount of solute, lower water content and a lower turgor pressure. Water flows along the phloem from the area of high hydrostatic pressure to the area of low hydrostatic pressure that is from source to sink.*The movement of sugars in plants*Adenosine triphosphate
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415 words - 2 pages
Every cell is surrounded by a plasma membrane. The cell membrane is selectively permeable- only certain substances can cross it freely. The structure of the membrane allows materials to move across it by 2 main means: active and passive transport. Password transport involves two processes: Diffusion and Osmosis. Passive transport allows some substances such gases and water to move into and out of the cell without using energy. Active transport includes processes such as "ion pumps", "exocytosis" and "phagocytosis". Molecules such as sucrose's are moved against their concentration gradient using active transport - this requires the use of energy. A concentration gradient exists whenever two
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510 words - 3 pages
General Chemistry II
Thermochemistry
Name:_________________________________________
Section: _____________ Score:______________
Date: _____________ (Wag mo ako lokohin! Wala ka nun. HAHAHAHAH)
Problem Set #1
1. A piece of an unknown metal weighs 550. g and requires 9.315 kJ of energy to increase its temperature from 22.0 °C to 65.2 °C. What is the specific heat capacity of the metal?
2. What is the final temperature of a 275 kg sample of water, initially at 19.5 °C, if 36.5 kJ of heat were added to it? The specific heat capacity of water is 4.18 J/g°C.
3. A 45.0 g piece of aluminum, which is initially at 19.5 °C, is placed in
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547 words - 3 pages
. Water pollution-. Soil detrigation-.
As earth’s temperatures continue to become more extreme due to global warming (extremely hot summers and cold winters), our agricultural practices are endangered. Many plants and animals rely on certain weather conditions to thrive, and global warming has resulted in the loss of many crops and animals. Most crops, such as wheat, corn, and soy have what's known as an “optimal growth temperature”, meaning that they thrive under a certain temperature range. When the temperatures exceeds or fails to meet these temperatures for extended period of time, mass crop death can result. This is harmful because it not only leads to more expensive food prices, but can
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reasonable; during our two trials, data that varied little led to calculations showing similar data.Method of Operation.First we will weigh the unknown metal. We will then take the unknown metal and heat it to approximately 100 degrees Celsius. We will then measure out a mass of water into a calorimeter, and place the heated metal inside. We will record both the initial and final (equilibrium) temperatures of the water and metal. From these pieces of data, we will be able to calculate the specific heat of the metal, as well as the molar mass. Theory: It takes exactly 4.18 joules to heat one gram of water by one degree Celsius. This fact, the specific heat of water, is an extremely important part of
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936 words - 4 pages
CHE Team Challenge 1
Conclusion and Recommendations
The purpose of the double pipe heat exchanger is to regulate running hot and cold water to attain a range of temperature by opening and closing valves. This is achieved by figuring out the LEGO NXT program for the NXT Brick. Team members worked together to examine the program and all of its properties. Each team was given a basic structure of the program; however the program had to have minor adjustments for the team to solve. Once adjustments were fixed, the team tested the software to assure the program was conclusive. The motor managed to spin to be able to open and close the valves to manage the set temperature range. The team was
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1039 words - 5 pages
Molar Mass of a Volatile Liquid
Introduction: Given the mass of vapor at conditions of known pressure volume, and temperature, one should be able to determine the molar mass of the vapor. Mathematically, The Ideal Gas Law relates the quantities of pressure (P in atm), volume (V in liters), temperature (T in Kelvin), and quantity of gas (n in moles). Using the expression PV = nRT, where R is the ideal gas constant (0.0821 L atm/mole K), one can determine the quantity of gas under given conditions of pressure, volume, and temperature.
In this experiment, an unknown volatile liquid is heated in a boiling water bath and is vaporized. The vapor forces air from the flask through a tiny pin-hole
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