Synopsis This project report explains about the surface tension and capillarity of liquid through a simple experiment of finding the capillarity of various detergents. Oil stains and grease on dirty clothes cannot be removed‚ using water alone‚ because water does not wet them. If detergents added ‚ surface tension is decreased‚ the area of contact is increased. Detergent molecules have the shape of a hairpin‚ one of which is attracted to water
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first discovered in England during the year 1808 by Sir Humphry Davy. He was able to separate calcium into a pure metal by doing an electrolysis process on a mixture of lime HgO‚ which is mercuric oxide. However‚ Sir Humphry Davy was not able to do this until after he found out Berzelius and Pontin electrolysed lime into mercury which constructed calcium amalgam. Although he discovered calcium in 1808‚ calcium metal was not available in large amounts until the beginning of the twentieth century. Before
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HUMAN CAPITAL MANAGEMENT AND AUDIT PROJECT REPORT ON HCL TECHNOLOGIES Submitted To- Submitted By- Dr.KRISHNA KISHORE RAHUL K PROV/MBA/1-13/053 Section-B (MBA Jan13-15) Alliance University TABLE OF
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Chemistry Assessment Practical and Report: Introduction: The experiment was conducted to find the unknown molarity of HCL. The unknown molarity of HCL was found by the use of the titration method and then comparing the results between the titrant and analyte HCL solutions. Molarity is a concentration unit‚ it is defined by the number of moles the total volume of the solution. This experiment included a process called titration‚ used to work out the unknown concentration of a known substance.
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The solubility of calcium hydroxide Aim: to find out the solubility of a substance that only partially dissolves in water. Method: place about 100cm3 of distilled water in a flask and add about one spatula of solid calcium hydroxide. Stopper the flask and shake well for one minute. Leave to stand for at least 24 hours. Titrate 10cm3 samples against 0.05 mol dm-3 hydrochloric acid solution using methyl orange as an indicator. Obtain enough results to calculate an accurate average‚ and then
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1 Class XII Chemistry Ch 5: Surface Chemistry Chapter Notes Top Concepts / Key learnings: 1. 2. 3. 4. 5. 6. Adsorption: The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is termed as adsorption. Adsorbate: The substance which is being adsorbed on the surface of another substance is called adsorbate. Adsorbent: The substance present in bulk‚ on the surface of which adsorption is taking place is called adsorbent. Desorption: The process of removing an
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A REPORT ON ANALYSIS OF HCL TECHNOLOGIES SUBMITTED TO SUBMITTED BY Mr. VIVEK BAJPAI PURNANSH GUPTA Mr. MAYANK DHAUNDIYAL COURSE: PGDM-M
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An Understanding of the Concept of a Three-Dimensional Cubes and Surface Area in the Classroom Written by Vanessa Kinsey There are several uses in our daily lives that involve calculating the area of objects or places. Many of these daily recurring calculations require using acquired skills to figure out the area of three-dimensional objects. When introducing the concept of surface area to 5th and 6th grade students‚ they need to first know what three-dimensional objects look like and understand
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then determined that there were four ways to increase the reaction rate: increase temperature‚ add a catalyst‚ increase surface area‚ and increase the concentration of reactants. The objective of this lab was to experimentally show how temperature and surface area impact the rate of reaction‚ so only two of these methods were tested. The evidence indicates that increasing surface area increases the reaction rate‚ and increasing temperature also increases the reaction rate. Temperature is the measure
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Gravimetric Determination of Calcium ABSTRACT Determining the mass of a pure compound is a method of a gravimetric analysis. One of the gravimetric analyses is the precipitation; it is a method of separating the analyte from the unknown sample as a precipitate where it will be filtered and converted into a known composition that can be weighed to determine its mass (Skoog et al‚ 2013). Determining the mass of calcium by using gravimetric analysis was the objective of the experiment. A 25 mL
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