Edward Dickson CHE101 DS-01 Experiment Date 7/21/2013 Report Submitted 7/21/2013 Title: Experiment #8: Ionic Reactions Purpose: In this lab we will work with aqueous solutions of ionic substances and determine if they are soluble. If the solution appears milky than it is known as a precipitate reaction‚ meaning it is soluble‚ and that the ions separated and became surrounded by water. Precipitates in this experiment are electrically uncharged. To identify which compounds are
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Part I Multiple choice or short answer questions 1) (2 points) Identify a solid a. Definite volume and no definite shape b. no definite volume and no definite shape c. definite volume and definite shape 2) (2 points) A substance composed of two or more elements in a fixed‚ definite proportion is a. A solution. b. A heterogeneous mixture. c. An alloy. d. A homogeneous mixture. e. A compound. 3) (2 points) Read the water
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appreciated about the content and the storytelling. It provides a story about love of Tom Hansen who was in love with a girl called Summer. One of main characters is Summer Finn. After a distressing shock of family‚ she no longer believes in love. Another main character is Tom Hansen. He fell in love with Summer at the first sight. He thought they could be an ideal couple by fate but it was just his dream. She said good bye to him without a reason. A deep message about love is brought to people
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Conclusion The purpose of our experiment was to determine if reading off words in various colors helped improve memory. Our hypothesis was that color helped memory and it was in fact proven by our experiments. According to data table 2‚ the average words remembered by the white control group was 6.4‚ while the other groups with the colors had averages of 6.8 and 8.2. Our hypothesis also proven in table 3‚ where the average words remembered by the control was 4.6 and the other two groups had averages
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Class X Question 1: Chapter 1 – Chemical Reactions and Equations Science Why should a magnesium ribbon be cleaned before burning in air? Answer Magnesium is very reactive metal. When stored it reacts with oxygen to form a layer magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. The magnesium ribbon is cleaned by sand paper to remove this layer so that the underlying metal can be exposed into air. Question
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poetry‚ and singing. The word (meaning originally "to hit") as used to describe quick speech or repartee predates the musical form. The word had been used in British English since the 16th century‚ and specifically meaning "to say" since the 18th. It was part of the African American dialect of English in the 1960s meaning "to converse"‚ and very soon after that in its present usage as a term denoting the musical style. Today‚ the terms "rap" and "rapping" are so closely associated with hip hop music that
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Water (H2O); Origin of Life By Mohammad Kamruzzamil Mojumder Contents Profile of water Physical properties of water Chemical aspects Chemical properties Reactions of water Importance in daily life Aspects as an energy resource Profile Water is a liquid at standard ambient temperature and pressure but it often coexists on earth with its solid state‚ Ice and gaseous state ‚steam (water vapor). It is a polar solvent but generally a weak electrical conductor and 65% of Human body weight is
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"You ought‚ O Catiline‚ long ago to have been led to execution by command of the consul. That destruction which you have been long plotting against us ought to have already fallen on your own head." (Safire 258) These enticing words‚ laced together by Marcus Tullius Cicero‚ were done so in an attempt to lead two audiences to two separate‚ although similar‚ conclusions. Cicero’s audiences included Catiline and his fellow conspirators‚ of whom Cicero wished to persuade to leave Rome‚ and that of the
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Rates of Chemical Reaction II Pre-Lab Summary: First we will set up the experiment as shown in Figure 2‚ and then we will fill the trough with room temperature water and record the temperature and we will also add the room temperature water to the buret until it is about 10ml from the top. If there are no leaks in the apparatus‚ we will add 10ml of KI to 15ml of distilled water in a 125ml flask. We will swirl the flask so that it achieves room temperature‚ then we will add 5ml of H2O2 and quickly
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EXPERIMENT NO. 4 Chemical Equilibrium Claver‚ L. Z. X. Y.1‚ Palad‚ C. C.2‚ Rocha‚ R. D. P3 1Anthropology Department‚ College of Social Sciences and Philosophy‚ 2National Institute of Geological Sciences‚ College of Science‚ 3Department of Food Science and Nutrition‚ College of Home Economics‚ University of the Philippines‚ Diliman‚ Quezon City 1101 Philippines ------------------------------------------------- Keywords: forward and reverse reactions‚ equilibrium constant‚ Le Chatelier’s Principle
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