2. An aqueous solution of KCl is colorless‚ KMnO4 is purple‚ and K2Cr2O7 is orange. What color would you expect of an aqueous solution of Na2Cr2O7? Explain. Orange. 3. Explain why hexane will dissolve benzene but will not dissolve sodium chloride. Sodium chloride is an ionic compound. 4. Some drinks like tea are consumed hot or cold‚ whereas others like Coca-Cola are consumed only cold. Why? For taste reasons‚ these drinks can be drunk if the user likes It but having coca cola like tea
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12-STANDARDIZATION OF SODIUM HYDROXIDE Standard solutions for titrations are especially pure mixtures with exactly known concentrations. Primary standards are very pure solids. They have the advantage that they can be weighed (the analytical balance is normally the most accurate instrument in the laboratory) and they are stable under laboratory conditions. In this experiment‚ the primary standard is oxalic acid dihydrate‚ H2C2O4 ( 2H2O. It will be used to standardize a solution of sodium hydroxide
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Meso-1‚2-diphenyl-1‚2-ethanediol with focus on stereoselectivity Method Please refer to the CEM3005W practical manual for details on experimental procedure. Results and Analysis {Limiting reagent} Mass benzoin = 2.0050g (0.00945 mole) Mass sodium borohydride = 0.4059g (0.0107 mole) Mass compound A used to form compound B = 1.0647g Results Mass (g) moles Molecular formula Yield (%) Mp (pure) Compound A 1.7458 0.00815 C14H14O2 86.22 138-139 Compound C 0.4255 0.001988 C14H14O2
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Case 13 Reducing Fertility in Bangladesh Geographic area: Bangladesh Health condition: in the mid-970s‚ a Bangladeshi woman had more than six children on average. in combination with poor nutrition and lack of access to quality health services‚ this high fertility rate jeopardized the health of both the woman and her children. Beyond the health impact‚ high fertility and rapid population growth represented a major constraint to the country’s economic development and social progress. Global importance
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By Vivian Cheng Health: Period 4 Mrs. Darpino December 2011 By Vivian Cheng Health: Period 4 Mrs. Darpino December 2011 Harm Reduction Theory Harm Reduction Theory Vivian Cheng Health Period 4 December‚ 2011 “Harm Reduction Theory” The war against drugs is an unwinnable war. Today‚ this seems to be a growing argument in the modern world. In a study performed in 2009‚ it was found that approximately 8.7% of Americans‚ twelve years
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Spores are transmitted from patient to patient via inappropriately sanitized or washed hands and also through the use of contaminated communal equipment. Thorough hand hygiene‚ using soap and water‚ and strict adherence to isolation precautions are therefore the foundation for effective Clostridium Difficile transmission prevention. Hand washing and strict isolation should be observed when caring for patients even after resolution
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uncertainty reduction theory from its origin to date. Ever since uncertainty reduction theory was first created‚ many researchers have examined it by comparing it with other theories. Uncertainty reduction theory had been tested across different cultures in order to confirm its generalizability. It had also been applied to real life situations to examine how individuals interact in their initial encounters with strangers. In addition‚ researchers suggested testing uncertainty reduction theory beyond
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MICROFINANCE AS A STRATEGY FOR POVERTY REDUCTION INTRODUCTION Microfinance is not something new in Malaysia. It has been operated by credit unions‚ co-operative banks and specialised credit windows of banks. Microfinance services of financial credit range for about RM10‚000 (USD2‚631) and mostly to finance small businesses‚ agricultural loans and loans for poverty reduction. Microfinance program in Malaysia has been implemented since 1987 as one of the poverty eradication strategies in the country
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Titus‚ Godley and White‚ 2006; Dennis‚ et al.‚ 2007) thus an alternative method to preventing further problems is the concept of harm reduction. This essay will thereby explore the strategies of harm reduction including its potential negative and positive aspects for injecting drug users and its relation to crime. Furthermore‚ it will explore extended harm reduction services specifically for drug users in Austria. Injecting drug use is acknowledged in 135 countries (UNODC‚ 2004) and is associated
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Jonathan Quinones Literature Review Paper Comm 306 Uncertainty Reduction Theory Uncertainty is an unpleasant feeling and because of this feeling‚ people are motivated to reduce this uncertainty by means of communication. Uncertainty reduction theory (URT) was developed to describe the interrelationships in any type of communication exchange using seven factors: verbal communication‚ nonverbal expressiveness‚ information-seeking behavior‚ intimacy‚ reciprocity‚ similarity‚ and liking (Berger
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