Essay March 28‚ 2014 ACID RAIN ENVIRONMENAL EFFECTS What is acid rain? It’s a rain or any other form of precipitation that is unusually acidic‚ meaning that it possesses elevated levels of hydrogen ions (low pH). It can have harmful effects on plants‚ aquatic animals and infrastructure. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide‚ which react with the water molecules in the atmosphere to produce acids. The most obvious environmental effect of acid rain has been the loss
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A buffer is an aqueous solution that allows resistance to significant change in pH when small amounts of strong acids or base are added to it. (Boundless‚ 2015) This is usually formed when a weak acid is added to a salt of its conjugate base. (Chemicool.com‚ 2014) When an Alka Seltzer tablet is dissolved in water‚ a buffer is formed when the weak acid citric acid is present with sodium citrate (citrate ion) the conjugate base (Buffer Balancing Acts Buffers‚ 2009) "Na3C3H5O7 (aq) + 3 HCl (aq)
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The acid-base titration curves help to find the pKa‚ Ka‚ and pH at equivalent point. At the beginning pH for HCl is 1.90 which is lower than the 3.28 for acetic acid; thus‚ strong acid (HCl) means lower pH and weak acid (acetic acid) means higher pH. Then at the equivalent point for the titration HCl-NaOH the pH is 7‚ which mans that is neutral‚ in other words there are enough NaOH mmol to neutralize the HCl mmol present; also‚ the solution contains only water and NaCl the salt derived from the titration
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dew‚ or dry particles. • more accurate term is "acid precipitation." • defined as any type of precipitation with a pH that is unusually low The Causes: • occurs when sulfur dioxide and nitrogen oxides are emitted into the atmosphere‚ undergo chemical transformations and are absorbed by water droplets in clouds • then fall to earth as rain‚ snow‚ mist‚ dry dust‚ hail‚ or sleet. • Dissolved carbon dioxide dissociates to form weak carbonic acid giving a pH of approximately 5.6 at typical atmospheric
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begin‚ unemployment is an issue that is growing at a steadily rate. The Trans Mountain Pipeline expansion proposal promises to resolve this problem‚ yet‚ there are also other factors that bring a great deal of concern. Kinder Morgan‚ the company that is responsible for the pipeline‚ suggests that expanding the Trans Mountain Pipeline can benefit employment heavily due to the fact that job will be created. Statistics from Trans Mountain stated‚ “According to Conference Board of Canada estimates‚ the
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Information Systems Paper Scott Clark CIS 205 June 20‚ 2011 Robert Meyers In society today it has become increasingly necessary to effectively use technologically advanced Information systems and software applications to run an organization. In our technologically advanced and dynamic society‚ organizations are being pushed to use and operate updated and advanced information systems and software applications to store information‚ process data and effectively manage day to day operations
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specialization‚ division of labour and the most important thing‚ comparative advantage. The next step of a FTA would be a customs union‚ which has a common external tariff. Members of FTA’s are free to set their own external tariff. The TAFTA‚ the Trans-Atlantic Free Trade Agreement‚ is herefore a proposal for a FTA between the US and Europe‚ as shown in Picture 1. Other possible members of this FTA could be the European Free Trade Agreement (EFTA) and the North-American Free Trade Agreement (NAFTA)
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to practice common organic laboratory techniques inside the lab to get one oriented to the basic methods of procedure that can be used for later experiments. This experiment involves the separation of benzoic acid from a more crude form‚ consisting of benzoic acid‚ methyl orange‚ a common acid/base indicator‚ and cellulose‚ a natural polymer of glucose (Huston‚ and Liu 17-24). The technique that is used to perform this separation is called extraction. Extraction is a systematic process of separating
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Tran Thi Quynh My quynhmy2202@gmail.com 0126 447 9977 Tk 21/47 Nguyen Canh Chan‚ Cau Kho Ward ‚ District 1‚ HCMC Personal information Full name: Tran Thi Quynh My Date of birth: 22 February 1989 Place of birth: Gialai province Marital status: single Personal profile: Enthusiastic‚ open minded‚ willing to learn‚ can- do spirit‚ responsible. I have just graduated from International University and I had a chance to open my mind and experience the life in America within 4 months. I’m enthusiastic
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The opposition of the Trans-Alaska pipeline did their best to keep the pipeline from becoming established but their efforts where in vain. With oil prices high‚ and so much support coming from Washington and the lower 48 states‚ it wasn’t long until the pipeline was constructed. However‚ the opposition would get another change to argue their points. In the spring of 1989‚ the Exxon Valdez oil tanker spilled its precious cargo in the Prince William Sound after it struck a reef‚ spilling between 11
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