Acid Strength Grade 10- Science (chemistry) 11/23/2012 Mariana Boff Acids Strength Acids are substances that contain hydrogen atoms which detach to form hydrogen ions when the acid is dissolved. Acids are divided into two main categories: the strong and weak acids. The stronger ones are very corrosive and can cause severe skin burns‚ here are some examples: nitric acid (HNO3)‚ hydrochloric acid (HCl) and sulfuric acid (H2SO4). The weaker ones are less corrosive and when in touch with the
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Advantages: Sulfamic acid is the fastest de-scaler - It dissociates into hydroxonium ions more readily in aqueous solution than the others‚ therefore giving a greater concentration of atoms that are able to react with the calcium in lime scale. It is safe to use because it does not produce chlorine gas [5]‚ which can be toxic. Sulfamic acid also has a low volatility. Disadvantages: Sulfamic Acid can be an irritant to eyes or skin and is the most expensive of the de-scalers. Q2) How these de-scalers
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Acid Property #1: The word acid comes from the Latin word acere‚ which means "sour." All acids taste sour. Well known from ancient times were vinegar‚ sour milk and lemon juice. Aspirin (scientific name: acetylsalicylic acid) tastes sour if you don’t swallow it fast enough. Other languages derive their word for acid from the meaning of sour. So‚ in France‚ we have acide. In Germany‚ we have säure from saure and in Russia‚ kislota from kisly. Base Property #1: The word "base" has a more complex
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Jeremy Harper Witch FRQ Account for the decline and growth of Witch hunts in Europe between 1500 1650 During this period witchcraft was considered a serious crime throughout much of Europe‚ in both catholic and protestant areas. Starting in 1500 there was a dramatic increase in the number of accusations and convictions of witchcraft which persisted through much of the 16th and 17th century before declining towards the latter portion of this period. The rise of witch hunts was spurred on by misogynistic
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The fiction of “Doe Season” is about the story of Andy who would like to be a boy rather than a girl. In her mind‚ it was the world for men and her father agree with her by giving her a men’s name. She tried to be a real man and share responsibility as a man. I think the story is focus on the relationship between Andy and her father. At the beginning of the story‚ Charlie thought she was only a little girl that activities like hunting was not suit for her. But her father insisted Andy won’t bother
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The Season for Reason by Ari Armstrong‚ December 12‚ 2005 "Merry Christmas‚" one of my atheist friends warmly wished. Another of my atheist friends points out that December 25 also commemorates the birth of Isaac Newton‚ perhaps the greatest scientific genius of all time. Now‚ it seems‚ Newton was actually born on January 4‚ 1643‚ not December 25‚ 1642. But December 25 is not the actual birth date of Jesus‚ either; it is instead based on a season of pagan celebration. So I suppose "Merry Mithras
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The Witch DBQ The witch craze in Europe lasted from the fifteenth century through the seventeenth century. Women were targets to persecution. Witchcraft had already been considered evil but religious conflicts from the Reformation started another uprising. People‚ women in particular‚ were being persecuted as witches for suspicious behavior‚ fear of the unknown and religious beliefs along with ignorance. People being suspicious and accusing of others was a main source for persecution. Women
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Formic acid is known to be the simplest carboxylic acid‚ and it is an important factor in chemical synthesis and occurs naturally. The chemical formula for Formic Acid is CH202‚ and is mostly found in the venom of bee and ant stings. Formic acid is clear and colorless with a pungent odor. Formic acid is used in many ways; Formic acid is used to preserve livestock. It is also sprayed on animal food and fresh hay to reduce the decay rate. It can also be used as a pesticide to protect bee
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hope that‚ “ Something was exercised through making this.” Typically a person wouldn’t expect a film about witchcraft‚ black magic‚ and the “Horror” of religion to be considered personal but The Witch‚ only being Egger’s first film‚ seemingly more than justifies a need for a demon to be expelled. The Witch is a Horror/periodical film set in the 1600s of New England that follows a family who’s recently been banished from a Puritan Christian village. After setting up an isolated home at close quarters
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Rains are a boon and blessing. They are a rare gift of God to mankind. They bring prosperity‚ rich harvest‚ happiness and joy. However‚ excess of everything is bad. It is equally true of rains. If they are in excess‚ they may result in floods‚ widespread suffering and loss. But generally‚ rains are welcome after the hot and sultry weather of summer. They bring welcome relief and revival of agricultural activities. It is said that mercy droplet as the gentle rain from heavens. Scarcity of rain
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