Acid Rain Definition: The term acid rain refers to what scientists call acid deposition. It is caused by airborne acidic pollutants and has highly destructive results. Scientists first discovered acid rain in 1852‚ when the English chemist Robert Agnus invented the term. From then until now‚ acid rain has been an issue of intense debate among scientists and policy makers. Acid rain‚ one of the most important environmental problems of all‚ cannot be seen. The invisible gases that cause acid
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“The Great Depression (1929-39) was the deepest and longest-lasting economic downturn in the history of the Western industrialized world” (The Great Depression-History.com 2012). The great depression is said to have begun after the First World War‚ It was a time of hardship and uncertainty. Although the great depression began in the United States it spread throughout the globe and affected almost every country. It brought about drastic declines in output‚ severe unemployment‚ and serious deflation
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The Effects of Acid Rain Bio-105 Abstract The effects of acid rain is damaging no matter how you look at the picture. Acid rain effects open areas more than forests due to the trees blocking some of the rain from hitting the ground. Acid rain is monitored by using emissions monitors. This helps figure out how much acid is in rainwater. Acid rain is harmful to fish by killing off entire species. Acid rain is harmful to living creatures‚ but many do not realize how toxic it can be to
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Trimyrisitin to Sodium Myristate to Myrisitic Acid Mandy Boyle Chem 213‚ Section 002 Due Date: December 3‚ 2009 I. Introduction People encounter esters everyday in both natural and synthesized forms. Esters are present in a variety of common compounds‚ from fragrances to animal fat (McMurry‚ 2008). Although these esters can undergo many different important reactions‚ this lab is particularly interested in the hydrolysis of esters into carboxylic acids and alcohols. Companies such as Dove‚ Palmolive
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Abstract: Introduction: Materials: * Chemicals: Buffer solution‚ pH 7.0‚ 50 mL Phenolphthalein indicator solution‚ 1.0 %‚ 1 mL Potassium hydrogen phthalate‚ KHC8H4O4‚ 2 g sodium hydroxide solution‚ NaOH‚ 0.1 M‚ 150 mL Unknown weak acid‚ 1.5g Water‚ distilled or deionized * Equipment: Balance Stir bar Beaker‚ 250mL Oven Buret‚ 50 mL pH sensor Desiccator Rising stand and buret clamp Erlenmeyer flask‚ 125mL Wash bottle with distilled water Funnel Weighing dishes‚ 2
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Worksheet - Acids‚ Bases and Salts 1. I am pure water. When heated my pH (increases‚ decreases)‚ because more of my water molecules dissociate. 2. I am a 0.020 M solution of weak acid‚ HA. If I only dissociate to the extent of 1.50%‚ what is the value of my Ka? 3. I am a 0.20 M solution of hydrocyanic acid‚ HCN‚ with a Ka of 4.93 x 10¯ 10 . What is my pH? 4. I am a buffer made from 0.10 M acetic acid and 0.15 M sodium acetate. If the Ka for acetic acid is 1.77 x 10¯ 5 ‚ what is my pH? 5. I am
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The Great Depression: The Extensive Effects The 1920s was a time of roaring prosperity. Even mid-October of 1929‚ the average middle-class American saw an “illimitable vista of prosperity” (Dixon 1). The thought of poverty was close to an end; in 1928‚ President Herbert Hoover stated‚ “We have not yet reached the goal‚ but given a chance to go forward with the policies of the last eight years‚ and we shall soon with the help of God be within sight of the day when poverty will be banished from the
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Ellsie: Queen Acid Rain Zoe: Queen Acid Rain’s Servant Justin: First Guy Dead Lance: Second Guy Dead Shea: Mr. CleanUpOurWorldIt’sTheOnlyOneWe’veGot! E: Servant! Z: Yes Queen? E: Let’s go pollute! Z: Yes Queen. J: *Walking in* Acid Rain herself! Why‚ no one will believe I have found her here! I must take a picture! E: No puny human‚ you will not! *Puddles Of Acid Rain Appear Around Him* J: No! Not that! *Trips And Falls Into Puddle Of Acid Rain* *Hissing Sound* L: *Walking In* Acid Rain herself
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Teenage Depression Depression is an illness that affects many people all over the world. Although this illness afflicts people of all ages‚ teenagers are especially impacted by depression and experience thoughts of suicide. In the novel The Bell Jar‚ by Sylvia Plath‚ a 19 year old girl‚ Esther Greenwood‚ suffers from depression. The author‚ Sylvia Plath‚ who committed suicide after writing The Bell Jar‚ based her main characters depression off of her real life experiences. This book exemplifies
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Depression Outline the Clinical characteristics of depression (2 key characteristics plus 5 further symptoms) Depression is a low emotional mood‚ characterised a significant levels of sadness‚ lost of energy and self-worth‚ and feeling of guilt. The diagnosis of major depression requires the presence of at least 5 or more the following symptoms. Affective symptoms: sad‚ depressed mood‚ and feeling low Cognitive symptom: e.g. feeling of guilty about any mistakes‚ and thinking themselves as worthless
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