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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Practical 3 Title: Effect of dissolved Carbon Dioxide on the pH of Water Aim: To investigate the effect of dissolved carbon dioxide on the pH of water. Hypothesis: The dissolved carbon dioxide will cause the water to turn acid‚ lowering the pH when carbon dioxide dissolves in water in which it forms carbonic acid (H2CO3). Materials: Straws‚ distilled water‚ safety glasses‚ pH probe‚ computer‚ universal indicator‚ gloves‚ lab coats‚ measuring cylinder‚ data logger‚ printer
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Effects of Hydration on the Human Body Rebecca St. Clair SCI/241 January 9‚ 2011 Ms. Katherine Jones‚ Ph D Water is an essential nutrient that provides health maintenance by regulating body temperature‚ providing lubrication and shock absorption‚ and is essential to maintain proper physiologic functioning. Over half of the human body weight is comprised of water. Water helps to regulate many human body functions such as: body temperature‚ and the amount of water lost through kidney functions
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Every winter road salt is used on sidewalks‚ roads‚ and highways to melt snow and ice. These are to prevent human activates from turning into accidents. When the snow melts the road salt gets dissolved into the melted ice and snow and becomes a formula. This formula sinks into the land (soil mostly) and kills vegetation. The purpose for this exit project experiment is to find out what are the affects of road salt on plants. The reason for doing this lab is to find out what a
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2 REVIEW OF RELATED LITERATURE The review of the literature for this study focuses on procedures used to identify teaching and learning styles and what effect a match between the two has on student learning outcomes and evaluation of instructors. The review focuses on a number of different instruments used to identify teaching and learning styles. The chapter begins with a definition
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habitat and may have negative effects on the environment. The creeping water primroses are yellow in all seasons except winter. The yellow flower is very distinctive of creeping water primrose. Flowers vary in size from 1 inch to 2 inches in diameter. It is a perennial aquatic plant whose long stems creeping over mud or shallow water. It came from South America to the U.K. It is introduces as ornamental and water garden plant. It is first recorded in 1999. The creeping water primroses can cause a lot
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The Salt Sector of Pakistan | API Final Report | BBA 4 | Date of Submission:June 11‚ 2012 | Submitted to: Ms. Tahira Jaffery | Submitted by:Fariha KhalidHafsa AlviSundus IftikharSyeda Hafsah HasanSyed Aqib Shah | Executive summary The purpose of this report was to examine the export related problems prevalent in the salt sector of Pakistan. Research for this report included interviews with the salt exporters and manufacturers in Pakistan. We interviewed‚ Mr. Ismail Suttar of Hub Salt
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The Salt of the Earth‚ a 1954 film by Michael Wilson‚ is truly a masterpiece. In a very unbiased and professional way‚ I can say that this film is thus far‚ my favorite film that we have seen in our Chicano Cinema class‚ and the reason is easily seen. This film by Wilson adequately and precisely depicted the struggles that many Mexican American citizens suffered through in their work. The movie takes place in Zinc Town‚ New Mexico‚ where the population consists of many miners that work for the
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The Effects Different Types of Water Have on Plant Growth Abstract This experiment examines the rate of plant growth when watered with different solutions. Throughout the course of a nine week period‚ five lima bean seeds were watered with five different solutions to see which will most enhance the growth of plants. The five solutions consisted of distilled‚ filtered
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a pure stone composed of just one of these substances". Bile is a greenish-brown liquid produced in the liver then stored in the gallbladder which is use to digest fat. Bile contains water‚ cholesterol‚ fat‚ bile salts‚ proteins and a waste product call bilirubin. If the bile has too much cholesterol ‚ bile salt‚ or bilirubin‚ they hardens into stones. There are two types of Gallstones. The first and more common type is known as the Cholesterol Stone‚ which accounts for 80 percent of all cases
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