General Chemistry II Lab (CHEM 1106) Determination of the Solubility Product Constant of a Salt Date Performed: March 1‚ 2011 INTRODUCTION If solid KHC4H4O6 is added to a beaker of water‚ the salt will begin to dissolve. The amount of solid diminishes‚ and the concentrations of K+(aq) and HC4H4O6-(aq) in the solution increase. When no KHC4H4O6 dissolves‚ the concentrations of K+(aq) and HC4H4O6-(aq) will not increase further and any additional KHC4H4O6 added after this point will remain
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Part A - Research the Salt Lake City Olympics scandal and address specific issues that link to Bigtown’s situation. Upon reading the article‚ "The Big Business of the Olympics and Bribery‚ I can identify several items that are similar to the proposed arrangement for Bigtown’s mayor. First‚ it is unfair to offer contracts for city work to companies who can bring convention business. Not all companies may be able to bring convention business to the town at this time. Unfortunately‚ this would leave
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EFFECTS OF WATER SOLUTIONS IN PLANT GROWTH CHAPTER I Introduction Plants are affected by different substances that come into contact with them. These effects may be good or bad. There are certain substances such as fertilizers‚ which have a positive effect on the growth of certain plants‚ more specifically pechay (Brassica rapa variety chinensis). Pechay is commonly used in cooking in Filipino households. It requires little attention as it is a very hardy plant. It is rich in vitamins A‚
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Salt Saturation & How it Affects Salt Crystal Size 12/07/11 Research Question: How does the saturation of water affect the size of the salt crystals? This project was chosen because it was intriguing and to find out if more salt equals bigger crystals. Hypothesis: If the water is more saturated then the salt crystals will be bigger. The Independent Variable is the amount of salt in the water. The Dependent Variable is the size of the salt
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chemical reaction does different types of salt have on the ice. Salt melts ice mainly because adding salt lowers the freezing point of the water. Pure water freezes at 32°F (0°C). Water with salt (or any other substance in it) will freeze at some lower temperature. The normal freezing point of water is 0 degrees Celsius‚ so if the temperature is above that then ice will melt. When salt and water are mixed together‚ the salt dissolves‚ which means the salt breaks into small particles that thoroughly
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This experiment explores how salt and sugar affect the melting rate of ice in water. Research Questions: * Does adding salt to ice and water slow down‚ speed up‚ or not change the rate the ice melts in the water? * Is salt the only substance to have this effect? What about sugar? Knowing how to speed up the melting rate of ice is very important information for anyone who needs to de-ice roads or driveways after a winter storm. While it seems simple‚ adding salt to ice water actually activates
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Subject: Chemistry SL Title: Preparation of a salt (lead iodide) by using precipitation method. Aim: To produce 1.50 g of lead iodide‚ PbI2‚ assuming 100 % conversion‚ using 1.00 g solid potassium iodide‚ KI‚ and 0.1 M lead nitrate‚ Pb(NO3)2 solution of volume 30 cm3 and hence calculate percentage yield. Calculations: 2KI(s) + Pb(NO3)2( aq) —> PbI2 (s) + 2KNO3 (aq) Mass of PbI2 to be produced = 1.5 g Moles of PbI2 = = 0.003 Moles of KI = 0.003*2 = 0.006 Mass of KI = 0.006*166 = 1.00 g
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within the supply chain‚ to fast and free shipping‚ L.L.Bean is a standout amongst its peers (“#3 Google”‚ 2015). L.L.Bean’s recognition is no coincidence‚ as the company has worked tirelessly to build upon their purpose as defined by Lean Leonwood Bean a century before. Reputable software vendors fill the supply chain management software market‚ ready to sell COTS supply chain management solutions to retailers and manufacturers. Despite the availability of solutions‚ L.L.Bean decided to build a
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Salt Of The Earth When I saw the cover of this movie I thought that I would not like it at all because it looked like an old movie and I really don’t like the black and white style. Watching it surprised me a lot. I was very moved and touched by the actual characters and the moral of the story. Knowing that this was not a fictional movie made it that much harder to not get emotional. There where many issues addressed in this movie with the Mexican-American mine workers. In this movie they make
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hypothesis proposed that if a small amount of salt was added to the reaction‚ then it cause the rate of the reaction to speed up‚ but if too much salt was added‚ then it will instead decrease the rate of the reaction. The data revealed that no additional amount of salt was the reaction that had the highest rate. As shown previously in the data table‚ the first trial’s average reaction rate of 4.5 mL/min was higher than the other two reaction rates where salt was added for trial 2 and trial3‚ 2.125 mL/min
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