Unit 2 Online Simulation-II (50 points) VLab: Precipitation Reactions: Data & Observations Navigate to: http://www.sascurriculumpathways.com/portal/#/search?searchString=&searchSubject=3&searchCategory=20 Enter the following username: job5circle (No password required) Enter 867 GO There are thirty-five combinations of aqueous solutions for you to investigate. (Note Table 1 on the Data Sheet.) Some of these combinations will produce precipitates; others will not. Step-by-step
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from the top of the tower of height 100 m. Determine the time it takes to reach the ground. Answer: t 2 1 6 sec. A particle is dropped from the top of the tower of height h. At the same instant another particle is projected vertically upwards from the bottom of the tower with such a velocity that it will be able to just reach the top of the tower. When and at what height from ground the two particles meet? 3h h Answer: t and x 2g 4 2. 3. 4. 5. A car covers first half of the total
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Two-way reactions continue until equalibrium (the state at which there is balance between reactants and products) is reached. Discovering the equilibrium constant for a reaction is very helpful for understanding that reaction. Knowing the equilibrium constant of a reaction is important because it allows you to calculate how much product will ultimately be formed during a reaction. Moreover‚ it also tells you how a particular mixture of chemicals will react. This is because chemical reactions
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LEARNING OBJECTIVES - To perform different types of chemical reactions including acid-base‚ precipitation‚ gas forming‚ complex compound forming and oxidation-reduction reactions. - To identify some of the products in these reactions and describe the chemical changes. - To write and balance the chemical equations for the reactions observed. III. EQUIPMENT AND REAGENTS 1. EQUIPMENTThirty test tubes One test tube rack Two test tube holders Two spatulas Three 250 mL beakers One stirring rodOne medicine
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The Rate of a Reaction The area of chemistry that deals with the rate or speed of chemical reactions is known a chemical kinetics. The word “kinetic” is derived from the Greek name kinitikos that means movement or motion. In the present context‚ the kinetic means the reaction rate or rate of a reaction that is defined as the change in concentration of a reactant or a product with time (M/s). Chemical reaction can be represented by the following general equation. Reactants Products It is very important
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Stoichiometry of a Precipitation Reaction Purpose: The purpose of this lab is to calculate the theoretical‚ actual‚ and percent yield of the product from a precipitation reaction. Also‚ to learn concepts of solubility and the formation of a precipitate. Procedure: Weigh out your 1.0g of CaCl2-2H20 and put it into the 100mL beaker‚ Add your 25mL of distilled water and stir to form the calcium chloride solution. Next‚ use stoichiometry to determine how much Na2CO3 and put it into a small
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REACTION PAPER The story of Sybil transcends the imaginable possibilities of reality and tragedy that may befall to any existent human being. Sybil was a pseudonym used to cover the identity of Shirley Mason‚ a bright commercial artist who sought professional help from Dr. Cornelia Wilbur after having occasional blackouts and distorted time lapses. Nearly half of her life was spent in psychotherapy with Dr. Wilbur and an author‚ Flora Schreiber‚ who documented the case. Raised by a mother suffering
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- Queueing Systems Homework #4 (Two pages) Answers are due before start of class on Thursday‚ April 17th‚ 2014 1. Fill out the IOE 416 teaching evaluation questionnaire on CTools (4 points out of 20). Note: Attach a copy of the e-mail receipt to your homework to be credited with the 4 points. 2. Items in a manufacturing facility form a queue to be processed at a single workstation. The items arrive at the queue in a Poisson process‚ and processing times at the workstation are independent
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Writing a Reaction Paper v A reaction paper is an analysis and an evaluation of the material presented. v In a reaction paper‚ make sure to give a detailed overview of the experience and tell what exactly was taken out of the experience. v A reaction paper should be more than a simple summary of the material that you are reacting upon. v It should include your opinion or reaction to the material. v This may take on a variety of forms: § You may compare the work to other related material;
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Name the four behavioral reactions to change. Describe the behavioral signs of each reaction‚ and identify an organizational strategy for dealing with each reaction. Change management is a set of processes employed to ensure that significant changes are implemented in a controlled and systematic manner. One of the goals of change management is the alignment of people and culture with strategic shifts in the organization‚ to overcome resistance to change in order to increase engagement and the achievement
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