Recrystallization of Benzoic acid Chemistry 204-002 Date: 4/9/2011 Hector Ortega Recrystallization is a method used to purify compounds‚ and this is a very important procedure because compounds are naturally impure. Polarity and solubility play a big role in this experiment and these characteristics are exploited in order to have a crystallization of the desired compound. In this experimented benzoic acid was crystallize using ethanol and water. I chose these solvents based on part C of the experiment
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Describe the Role of Situational and Dispositional Factors in Explaining Behavior Sophie Landesmann The roles of situational and dispositional factors both play an important role in behavior. A significant term that one has to take in account is attribution‚ which is how people interpret and explain casual relationships in the social world. Humans have the need to know why things actually happen. Situational factors have something to do with external factors. When
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professional has made for the client. These goals are address with normal thinking with guidance of the professional. This guidance will keep the client on the right path to achieve the goals. 2. Describe the role played by managed care in case management. Case management plays varies of roles in managed care. Manage care is a collaborative process that assesses‚
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P4- describe the role of lay people in criminal cases D1- evaluate the effectiveness of lay people in English courts Introduction Lay people are people who don’t get paid and who are not qualified; they are volunteer’s‚ lay people in the law are the magistrate and the jury and I will be explaining their role and the advantages and disadvantages of having lay people get involved with the legal system. The Magistrate A magistrate is some one who is not paid or is qualified and is only
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Determination of Vitamin C (Ascorbic acid) concentration in some of Commercial Products‚ by Redox Titration Mouhannad AL.-Hachamii Sadiq J. Baqir Saadon A.Aowda Fatima A. Hussein‚ Dep.of chemistry‚ college of science‚ Babylon University Muhammed K.Alasedi Ministry of Health Hilla city‚ Babylon Abstract The goal of this search is to determine the concentration of vitamin C (Ascorbic acid ) in some of a Commercial Products‚ Vegetables and Fruit Juices by Redox Titration. A redox
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ACTIVITY 1 Hyperventilation 1. DescribethenormalrangesforpHandcarbondioxideintheblood. The normal pressure range for carbon dioxide in the blood is 35-45mmHg. The normal ph range for blood are between 7.35 and 7.45 2. Describe what happened to the pH and the carbon dioxide levels with hyperventilation. How well did the results compare with your prediction? The Ph increases and carbon dioxide decreases 3. Explainhowreturningtonormalbreathingafterhyperventilationdifferedfromhyperventilationwithoutreturningtonormal
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Different antacids 8. Side effects 9. Nursing implifications 10. Inference Abstract of the work under taken Antacids are medicines that neutralize stomach acid. They are used to relieve acid indigestion‚ upset stomach‚ sour stomach‚ and heartburn. Antacids are taken by mouth and work by neutralizing excess stomach acid. They contain ingredients such as aluminum hydroxide‚ calcium carbonate‚ magnesium hydroxide‚ and sodium bicarbonate‚ alone or in various combinations. Antacid products
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025 volume 0.1x0.25ml=0.025 moles 0.025÷0.254=0.98 (Rounded up to one decimals places) =0.1 M To begin with concentration I have choose three volumes form my results table which I have added them and then divided by three to get an average results. Describe the stages you followed in collecting the primary data and any secondary data. Titration Steps: • Firstly we weighed the solid sample of sodium hydrogen carbonate with an accurate balance; then dissolved in distilled water up to 250ml to make a
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Ethanoic Acid Advantages: Ethanoic acid is non-toxic and is a weak acid‚ meaning it will not do any damage to most surfaces as it does not corrode or bind to other metals‚ therefore can be easily removed through washing or rinsing it. Disadvantages: Ethanoic Acid is the slowest de-scaler of the three acids‚ and is therefore the least effective. It also may cause an unpleasant smell‚ and can have a negative effect on the taste of coffee meaning one would need to spend longer time rinsing and cleaning
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Title: Acids‚ Bases & Buffers Objectives: 1. To understand the acid-base chemistry. 2. To prepare and evaluate a buffer system 3. To measure the buffering capacity of two types of isotonic drinks. Introduction: There are acid-forming‚ basic forming and neutral food‚ however the acid or alkaline properties of a food is unable to judge by the actual acidity of the food itself. For example‚ citrus fruits such as lemon are acidic‚ but they are alkaline-forming when we consume and digest it. Therefore
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