The effects of rock salt‚ which is used for melting snow in the winter time‚ works in a variety of ways. The main reason is to aid in melting of the snow making it easier for individuals to drive their vehicles and also the sidewalk for pedestrians. Overall‚ the rock salt used for melting snow‚ works but it have some pros and cons about it‚ but using it wisely should be the key to its success. Might grass growth be inhibited by salt? Introduction The usage of salt‚ (rock salt) is
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SALTS EVERYDAY First some words about salts in chemistry. Salts are ionic compounds that can result from the neutralization reaction of an acid and a base. They are composed of related numbers of cations (positively charged ions) and anions (negative ions) so that the product is electrically neutral (without a net charge). Salts can appear to be clear and transparent (sodium chloride)‚ opaque‚ and even metallic and lustrous (iron disulfide). In many cases the apparent opacity or transparency are
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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 Effect of Varying Molecular Weights on the Rate of Diffusion of Substances August 22‚2012 ABSTRACT The effect of molecular weight on the rate of diffusion was verified by the 2 tests: the glass tube setup and the water agar-gel setup. In the glass tube setup‚ two cotton balls were soaked in the solutions of hydrochloric acid (HCl) and ammonium hydroxide (NH4OH) and were simultaneously placed on both ends of the tubing.NH4OH had a lighter molecular weight of 35 g/mole which diffused
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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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The Great Salt Lake The Great Salt Lake is a wonder of its own. Made by the remnants of Lake Bonneville‚ this lake is unique to Utah and has many different characteristics that make it this way. Have you ever wondered how big the Great Salt Lake really is? It is one of the largest lakes in America. The Great Salt Lake is about seventy-five miles long and twenty-five miles wide. Even though the deepest spot in the lake is thirty-four feet the average depth of the Great Salt Lake is around 13 feet
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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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ABSTRACT The effect of molecular weight on the rate of diffusion was measured using two tests namely: the glass tube test and the agar-water test. The set-up of the glass tube test used two cotton balls of the same size. One cotton ball is moistened with hydrochloric acid (HCl) and the other one is moistened with ammonium hydroxide (NH4OH). The two cotton balls were inserted in both ends of the glass tube. NH4OH which has a lighter molecular weight (35.0459 g/mole) diffused with a faster rate (dave=20
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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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