Erlenmeyer flask with a rubber tube and stopper and then must be checked for leaks by lowering the leveling bulb. This should now complete the set up for the lab experiment. Now that the experiment has been set up‚ to perform this lab‚ 10 ml of 0.10M KI and 15 ml of distilled water must be added to a 250 ml Erlenmeyer flask. The flask must then be swirled in the water bath to allow the solution to succumb to the same temperature. Once that has been done‚ 5 ml of 3% of H2O2 must be added to solution
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tired because of the tough training session today and the serious; so called boring classes by Capt. Rajveer. Suri ji‚ incharge of the kitchen department‚ is serving food to all the tired cadets. Suri ji: O ki hoya mere shero? Aj sab chup-chaap baithe ho. Koi gala-shala nahi kar rahe? O ki gal hai? Mainu das. Ali (an innocent small-town boy who has come here to make his father’s dream of him being a soldier come true.): Suri ji‚ aaj to bohat hard training hui. Saara din bas bhagta dodte rahe.
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CASE 1: ETCH-A-SKETCH ETHICS. QUESTION 1: Was it ethical of the Ohio Art Company to move production to China? What were the economic and social costs and benefits of this decision? What would have happened if production had not been moved? The decision to close and move a plant raises important issues about the social responsibilities of a corporation. To make an ethical judgment‚ one must look at the impact the decision has on various stakeholders. On a macroeconomic level‚ both the US and
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adding an excess amount of KBr or KI to an acidified solution of the sample according to the following reaction: BrO3- + 5 Br- + 6 H+ 3 Br2 + 3 H2O IO3- + 5 I- + 6 H+ 3 I2 + 3 H2O Sodium thiosulfate solutions can be standardized by direct titration of the I2 generated in in the KIO3 reaction using the starch-iodine complex as the indicator (remember that the iodine is actually in the form of the triiodide ions in the presence of excess KI due to the I2 + I- I3-‚ equilibrium
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18 mm X 150 mm test tube rack * Pipette Procedure: 1. Place the 4 solutions in separate test tubes with about 2.5 mL in each. (NaF‚ NaCl‚ KBr‚ KI) Use a dropper or you can use a pipette. Add 1 Ml ( 20 drops) of 0.5 M Ca ( NO3h) to each test tubes. Observe
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Bandler (Indigenous) (Australian) (political) Key Themes: * Justice * Equality Aung San Suu Ki (political) (international) (non-indigenous) Key Themes: * War and Peace * Deane (non political) (Australian) (non-indigenous) Key Themes: * The tragedy of loss of human life Reasons why a speech is great: * Resonates in new context * Continues to inspire or warn or influence * Speaks to you as a modern audience * The themes and emotional aspects * It
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OF DISSOLVED OXYGEN CONTENT BY WINKLER REDOX TITRATION A. Standardization of Thiosulfate Solution Primary Standard used: KIO3 Formula Mass of Primary Standard: 214.0010 g/mol %Purity: 99.9% Formula Mass of KI: 166.00277 g/mol %Purity of KI: 99.9% Trial 1 2 3 KIO3 weight‚ g 0.1459 0.1458 0.1459 KI weight‚ g 1.0033 0.9857 1.0100 Volume of Na2S2O3‚ ml Final Volume‚ ml 22.6 25.5 22.9 Initial Volume‚ ml 0.0 0.0 0.0 Net volume‚ ml 22.6 25.5 22.9 B. Sample Analysis Volume of Sample: 400 ml Volume of sample
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39. The Viscosity of Liquids After studying the present lecture‚ you will be able to Define viscosity and viscosity coefficient Outline the method to measure viscosity using Ostwald viscometer Determine the average molecular weight of a polymer Determine the surface concentration of 1-butanol in aqueous solution Measure the distribution coefficient of a solute betweenn two solvents 39.1 Introduction Viscosity‚ one of the transport properties‚ arises because of intermolecular attractive and
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thức ngôn ngữ và đặc biệt là các kĩ năng thực hành giao tiếp (nghe‚ nói‚ đọc‚ viết) để người học có thể sử dụng ngoại ngữ như một phương tiện giao tiếp nói hoặc viết theo nhu cầu cá nhân‚ xã hội-nghề nghiệp. Các kĩ năng thực hành có mối liên hệ khăng khít‚ hỗ trợ‚ bổ sung lẫn nhau. Để thực hành tốt một ngoại ngữ‚ không thể chỉ chú trọng kĩ năng này mà coi nhẹ kĩ năng kia. Tuy nhiên‚ mỗi kĩ năng đều có những đặc điểm riêng biệt đòi hỏi phải tính đến và nghiên cứu kĩ lưỡng để có thể nâng cao hiệu quả
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