economically savvy for whoever is supplying the salt for these roads is essential when testing for deicing quality. There has been a lot of work done previously to find the most efficient deicer. We have been using salt to control snow and ice on roadways since 1930. However‚ we are now looking into the environmental effects of salts as deicers along with other potentially harmful effects. One current study is looking into the corrosive effects of salts on our vehicles. Experimental Our experiments
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the Salt: Mass of Paper Cup plus Sodium Chloride after complete evaporation of water: ___4.7_______g Mass of Sodium Chloride (use Mass of Paper Cup from #3 to calculate): ___2.2_______g Mass (g) Percent in Mixture* Iron filings 1.9 g 1.9/6.8*100= 28% Sand 1.9 g 1.9/6.8*100= 28% Table Salt 2.2 g 2.2/6.8*100= 32% Benzoic Acid 0.8 g 0.8/6.8*100= 12% *Follow rules of calculations with Significant Figures Calculate the Percent of each Substance (iron‚ sand‚ salt‚ benzoic
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therefore‚ materials have not been a limitation in my practice. My current execution involves re-creating the Chinese guardian lions out of casting plaster. And then the lions are individually submerged in a salt crystal mixture of alum salt (aluminum sulfate‚ Al2(SO4)3 ) and distilled water‚ where salt crystals will form on the surfaces of the lions over a period of time‚ depending on the level of saturation. The Chinese guardian lions are symbolic decorative that traditionally stood in front of palaces
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TABLE OF CONTENTS 1. IA (Alkaline Metals) 1.1. H………………………………………………………………………..2 1.2. Li………………………………………………………………………..2 1.3. Na………………………………………………………………………2 1.4. K………………………………………………………………………..3 1.5. Rb………………………………………………………………………3 1.6. Cs………………………………………………………………………3 1.7. Fr……………………………………………………………………….4 1. IIA (Alkaline Earth Metals) 2.8. Be………………………………………………………………………4 2.9. Mg………………………………………………………………………4 2.10. Ca………………………………………………………………………4
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reactions with the Finkelstein reaction. The conditions for this are NaI in acetone. NaI is soluble in acetone but the products of the reaction; NaCl and NaBr are not. We will watch the reaction by looking for the first appearance of the solid salts. Acetone is a good solvent for Sn2 reactions because it is a polar aprotic solvent. We will be examining Sn2 reactions with an ethanolic solution of silver nitrate. The silver ion coordinates with a lone pair on the halogen which begins to
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Unit 6 Lab Report 1. Objective: To find the percent composition of water in an unknown hydrate. 2. Materials: Goggles‚ apron‚ evaporating dish‚ hot plate‚ and stirring rod 3. Procedure: get the mass of a evaporating dish‚ put a sample of the hydrate onto the evaporating dish and mass the dish with hydrate. Put the dish with hydrate on the hot plate on high heat. Break up any clumps that form during the heating process. Observe any color
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2.3g Mass of filter paper: 0.9g Mass of filter paper and dry benzoic acid: 1.6g Net mass of the dry benzoic acid: 0.7g Step 4: Separating out the salt Mass of cup and sodium chloride: 3.3g Net mass of dry sodium chloride: 1.0g Data Table 1: Experiment Data |Grams|Percent of Mixture| Iron fillings|1.2g|30%| Sand|1.0g|25%| Table Salt|1.0g|25%| Benzoic acid|0.7g|18%| Total|3.9 g|72%| A. In the beginning of the lab‚ I thought that in order to separate all of the solids that the iron
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IB Chemistry Lab Report Design Example— Effect of Temperature on Solubility of Potassium Chloride in Water Research question How does temperature affect the solubility of potassium chloride in water? Hypothesis As the temperature of water increases‚ the particles of solid Potassium chloride‚ KCl‚ which are absorbing energy from its surrounding‚ start moving more easily between the solution and its solid state because. According to the second law of thermodynamics‚ the particles will
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RC II-1 Science/Sensory Age: 5-years-old Activity: St. Patrick’s Sensory Box Goal: To help the kids explore with their hands. Materials and processes: Green rice or green sand‚ spoons‚ green plastic/glass gems‚ foam shamrocks‚ gold coins‚ mini cauldrons‚ a rainbow‚ and a few magnifying glasses. Teaching Strategies: Use the rice or sand to hide the objects‚ with the spoons and magnifying glasses have the kids look for the leprechaun’s gold‚ or find four leaf clovers. Developmentally
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another out. Birds use a pond for rest and food as they are usually less busy than a lake or larger body of water and have more to offer in the way of food. (http://library.thinkquest.org/04oct/00228/facts.html) Sodium Chloride is better known as salt. Salt has different uses and is the number one ingredient in brine that is used on dirt roads in the summer time to keep the dust down. It is used on roads in the winter time to decrease the freezing temperature on the roads so ice doesn’t form‚ creating
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