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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In this story by Connie Jan Maraan‚ the protagonist of the story is a ghost who died when the Tayuman LRT Station suddenly collapsed and the train came falling down on his face. According to him‚ he has seen Christ because of that incident. -Summary provided by: images.1aot.multiply.multiplycontent.com/…/PHIL.LIT%20-… (first entry that appears in Google upon searching Ghost by Connie Jan Maraan) In Connie Jan Maraan’s story entitled “Ghost”‚ she applied various symbols to express what happened
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Kinetics Kinetics 6.1 Rates of reaction 6.2 Collision theory 6 16.1 Rate Expression (AHL) 16.2 Reaction mechanism (AHL) 16.3 Activation energy (AHL) 6.1 Rates of reaction 6.1.1 Define the term rate of reaction. 6.1.2 Describe suitable experimental procedures for measuring rates of reactions. 6.1.3 Analyse data from rate experiments. © IBO 2007 Figure 601 An explosion is a quick reaction D ifferent chemical reactions occur at different rates (i.e. speeds)
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Science Q. 1. What is chemical reaction? Q. 2. Which substance is used for white-washing the walls? Q. 3. What are exothermic reactions? Give one example also? Q. 4. Name four types of chemical reactions? Q. 5. What are combination reactions? Q. 6. Give two example of combination reaction? Q. 7. What are displacement reactions? Q. 8. What are double displacemwent reactions? Q. 9. What are oxidation reactions? Q. 10. What are reduction reactions? Q. 11. What is rancidity
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Title: Aim: The aim of this experiment is to test if the rougher surfaces produce more friction and affects the distance travelled of a toy car. The aim of this experiment is to determine if the surface areas affect the distance travelled of a toy car by creating friction between the surface and object. The aim of this experiment is to determine if the surface areas affect the distance of a toy car due to the force of friction between the two objects. Hypothesis: From the basic research shown
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Twenty Really Good Ice Breakers Strictly for Meetings and Special Functions Ice breakers are particularly well suited for beginning a speech or starting a meeting. As the name implies‚ they “break the ice‚” help participants relax‚ and generally set the tone for the presentation. They help to relax participants‚ and that makes them more receptive to listening and contributing. An ice breaker can also serve to create a “team atmosphere” and motivate participants to work with others
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The Mercantile Produce Brokers (Pvt.) Ltd has incorporated as a Private Limited Liability Company‚ under the Companies Act 1982‚ in September 1995. This is a tea brokering company. In 1992 MPBL had a market share of 1 percent with investment of Rs.14million. The Restructuring also involved the transfer of 60 percent of the share capital to Mercantile Produce Brokers (pvt) Ltd. The Company has a team of highly knowledgeable‚ skilled and experienced person in the Tea industry‚ which had been the main
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There is a Commons Select Committee for each government department‚ examining three aspects: spending‚ policies and administration (parliament.uk). These committees operate in both chambers of parliament and were not established until the late 20th century. Scrutiny in Westminster went up a level in 1979 with the establishment of Departmental Select Committees (George & Morgan). These committees have a minimum of 11 members and they
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Management Consultancy International Diploma of Management Session 7 BSBHRM402A Recruit‚ select and induct staff Welcome back to the program! This unit is important because as managers‚ we need to be aware of all the facets of recruiting and selecting staff as well as inducting them in to the team. Even if this is not something that you do right now‚ it could become part of your role in the future. Why do you think recruitment and selection are such vital skills for managers? Take some
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Department of Chemistry Chem 180 Lab 5: Ionic Reactions Submitted by Abstract: The purpose of this experiment is to work with aqueous solutions of ionic substances. Aqueous solutions are those solutions in which water is the solvent. When ionic substances are dissolved in water‚ the ions separate and become surrounded by water molecules. The focus of this experiment is on precipitates. The goal of this experiment is to study the nature of ionic reactions‚ write balanced equations‚ and to write
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