Chemistry Of Natural Water :: essays research papers

The purpose of this experiment is to explore the hardness of the water on campus. Hard water has been a problem for hundreds of years. One of the earliest references to the hardness or softness of water is in Hippocrates discourse on water quality in Fifth century B.C. Hard water causes many problems in both in the household and in the industrial world. One of the largest problems with hard water is that it tends to leave a residue when it evaporates. Aside from being aesthetically unpleasing to look at, the build up of hard water residue can result in the clogging of valves, drains and piping. This build up is merely the accumulation of the minerals dissolved in natural water and is commonly called scale. Other than clogging plumbing, the build up of scale poses a large problem in the industrial world. Many things that are heated are often cooled by water running thru piping. The build up of scale in these pipes can greatly reduce the amount of heat the cooling unit can draw away from the source it is trying to heat. This poses a potentially dangerous situation. The build up of excess heat can do a lot of damage; boilers can explode, containers can melt etc. On the flip side of the coin, a build up of scale on an object being heated, a kettle for example, can greatly reduce the heat efficiency of the kettle. Because of this, it takes much more energy to heat the kettle to the necessary temperature. In the industrial world, this could amount to large sums of money being thrown into wasted heat. In addition to clogging plumbing and reducing heating efficiency, the build up of hard water also adversely affects the efficiency of many soaps and cleansers. The reason for this is because hard water contains many divalent or sometimes even polyvalent ions. These ions react with the soap and although they do not form precipitates, they prevent the soap from doing it's job. When the polyvalent ions react with the soap, they form an insoluble soap scum. This is once again quite unpleasing to look at and stains many surfaces. The sole reason for all these problems arising from hard water is because hard water tends to have higher than normal concentrations of these minerals, and hence it leaves a considerable amount more residue than normal water. The concentration of these minerals is what is known as the water's Total Dissolved Solids or TDS for short. This is merely a way of expressing how many particles are dissolved in water. The TDS vary from waters of different sources, however they are present in at least some quantity in all

How Diversity Relates to Education Essay

In the general education system, it is very important that there is a wide array of diverse groups in the classroom. â€Å"It is important to have a diverse student body, not only to create a realistic setting but also to encourage people to grow outside their boundaries and learn something new about a culture they may not be familiar with. (Pendulum 1) I believe diversity is an important part of the educational system. It is something positive, and not something one should fear. I also believe that diversity I crucial to a growing child. In this essay, I will address how diversity relates to education in general and how it relates to me as a future teacher. Diversity and education in America is an important topic in today’s education system. Inclusion is a key factor in the classroom; it helps bring diversity in to the lives of many children all over the world. By having diversity in the classroom students can learn about peoples differences that make them special and unique. Through my time in taking this diversity class I have come to realize how important it is to teach children that everyone is different and special in their own way. As the student population in American schools becomes increasingly diverse, educators must respond with school reform efforts that meet the needs of all students. In order to do so, teachers need to be prepared to take on the diverse student population. Going through the school of education and this diversity class, I am able to understand now that teachers must develop a culturally sensitive curriculum that integrates multicultural viewpoints and histories, to apply instructional strategies that encourage all students to achieve, and review school and district policies related to educational equity. From my educational background so far I know that teachers must become adept at choosing printed, electronic, and audiovisual materials, and in selecting topics and assignments that value the wide variety of perspectives and interests that exist among the students in any given classroom. The concept of diversity encompasses acceptance and respect, it means understanding each student in the classroom is unique and recognizing their individual differences. â€Å"Children exposed to diverse cultures in the classroom learn to understand different points of view, which is an important part of education† (Canadian Teachers 1). Children learn to celebrate differences and learn how to work together to be successful. If teachers are accepting of students differences they will be able to look at students for their potential instead of with a bias in mind, and this will help them teach more successfully. As a future teacher, I think it is important to create a tolerant, accepting and caring classroom atmosphere and here are a couple things one can do as a teacher to incorporate diversity in the classroom. By discussing diversity, and why it is a positive thing, creating lesson plans that discuss the cultures of my students and cultures of the community I teach in, by discussing religious beliefs of the community, and by speaking to students about disabilities and at risk students will help children in my class realize that these differences do not make someone less than them. I would also teach students about socioeconomic issues and how they affect students, and will teach the differences in gender and about gender stereotypes. I will teach these stereotypes but allow both boys and girls in my classroom the same equal opportunities. I believe discussing these issues to today’s youth will help show students that all people have needs, and I would emphasize that it is important for students to accept and help each other in order to benefit themselves and the world around them. I think that by teaching lessons that incorporate diversity students can identify and overcome biases, and as a teacher I will also learn about my biases from the students in my care. As a teacher it is important to make sure the classroom atmosphere is comfortable in order to ensure productivity. Teaching students that differences are a good thing and those differences can be learned from and valued is a way to help ensure a positive classroom environment. As a teacher I will help my students understand biases, and I will help them be able to accept differences and treat people fairly by educating them about the differences of the people around them. I believe there are many ways a teacher can incorporate diversity lessons into the classroom. Overall, I believe that teaching students to respect each other despite their differences will benefit the students, the teachers, and the rest of the world. Diversity is an important topic today because everyone is different and unique; as a teacher I understand that I will never be in a school that is not a diverse teaching environment. I think that by taking this diversity class, it has helped me to realize and understand the importance diversity in the classroom and the community has to offer.

The War Of The Iraq War - 958 Words

On September 11, 2001, two planes crashed into the World Trade Center in New York City, New York. This was the very first contact that the United States of America had with the terrorism that went on in Iraq. March 20, 2003 marked the day that President George W. Bush announced the start of the war against Iraq (1). This was the beginning of a very costly war on both America and Iraq. The cost of the Iraq War was not just the amount of money spent, but the impact of war on the soldiers and the toll that it took on the families of those who were involved, as well as the amount of time and dedication of resources put into the war by the Government. The amount of money spent during the Iraq War is a number that is not easily understood. The initial cost of the Iraq War has totaled up to be somewhere around 1.7 trillion dollars as of 2013 (2). While this is a staggering number, it has only become worse. A study has shown that the expenses over the next four decades could total u p to be around 6 trillion dollars not to mention the interest rate which could add another 4 trillion (2). These numbers do not even make a dent in what the U.S. is paying. In addition to the initial cost, there is also a price to be paid to the veterans that served our country. A 2011 study found U.S. medical and disability claims for veterans after a decade of war totaled $33 billion. In 2013, that number had risen to $134.7 billion (2). The War in Iraq brought devastation to theirShow MoreRelatedThe War Of Iraq War Essay1198 Words   |  5 Pagescontroversy, and terror. The capital of Iraq was shaking not only by their new government that reflected dealmaking not meritocracy but, also with an internal religious struggle that was peaking with seventy or more deaths a day. Death was far too easy in Iraq, the United States was in the search for the for the best approach in a hostile environment where the identity of the enemy is masked by the surrounding civilians. The pending question that comes from the war in Iraq war, What is the right approach toRead MoreThe War And The Iraq War862 Words   |  4 PagesThe Gulf War and the Iraq war can reflect the tension between a phenomenon is that the United States and the Middle East. The American media reported on the two Gulf War had many similarities. In the recent ten years, with the development of social economy and media technology has increased democratization, media reports and presents new features about the media. The topic of what the role of wars in the society has been discussed for many people. Some people argue that during the war, everythingRead More war in iraq1122 Words   |  5 Pagesfor the failed Iraq war. 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In purely academic terms, power is the ability of Actor A to get Actor B to do something that B would otherwise not do; the ability to get the other side to make concessions and to avoid having to make concessions oneself (Frieden PRead MoreThe Iraq War1926 Words   |  8 PagesThe Iraq War began in 2003 and lasted until 2011, and stands to be among the most controversial conflicts of modern times. It was a war that proceeded without the approval of the United Nations (UN ) and was said to be a failure on all counts, for despite managing to end Saddam Hussein’s regime did not lead to an improvement in the situation in Iraq, and instead led Iraq to becoming a failed state and being on the brink of a civil war. According to then Secretary-General Kofi Annan, the Iraq WarRead MoreThe Just War : The Iraq War1132 Words   |  5 PagesBush, announce, â€Å"At this hour, American and coalition forces are in the early stages of military operations to disarm Iraq, to free its people and to defend the world from grave danger† (â€Å"War in Iraq Begins,† 2003). Bush and his advisor’s actions were based on the information that the Iraqi leader, Saddam Hussein, was building weapons of mass destruction. The Iraq War is a â€Å"just† war because it was a reasonable response with a moral purpose. The United States is known for helping other countries andRead MoreThe Vietnam War And Iraq Wars1214 Words   |  5 PagesFinal Exam Paper The Vietnam War and Iraq wars have many more similarities then the common American would think. Both were fighting gorillas in a foreign land in a way that the soldiers were never trained or prepared for, against a foe that despise America as a whole. 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