QUANTITATIVE DETERMINATION OF COPPER (II) CONCENTRATION BY SPECTROPHOTOMETRY D.DEL PRADO1‚ J. BELANO1‚ M.MAHUSAY2‚and M.FRANCISCO2 1 DEPARTMENT OF FOOD SCIENCE AND NUTRITION‚ COLLEGE OF HOME ECONOMICS 2INSTITUTE OF CHEMISTRY‚ COLLEGE OF SCIENCE UNIVERSITY OF THE PHLIPPINES‚ DILIMAN‚ QUEZON CITY 1101‚ PHILIPPINES DATE SUBMITTED: 12 MARCH 2013 DATE PERFORMED: 7 MARCH 2013 ------------------------------------------------- ------------------------------------------------- ABSTRACT -------------------------------------------------
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Introduction: The objective of this experiment is to utilize the techniques of weighing and titrating to determine the total amount of MgSO4 present in an unknown sample. Standardized EDTA will be used to titrate the unknown solution. This type of reaction is a complexation reaction‚ which usually involves Lewis acids and bases. EDTA in complexation reactions serves as a chelating ligand. The base‚ EDTA‚ will bind to the metal ions‚ which serve as the Lewis acid‚ thus playing a role as a ligand
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It’s hard to choose a specific leader I admire the most‚ but if I had to choose one‚ it would be Malala Yousafzai. From what I read from her autobiography‚ I greatly admire her acts of leadership‚ courage and determination for change. She may not be as known‚ but her story and her beliefs are just as great as those we look up to today‚ such as Martin Luther King Jr.‚ Gandhi‚ Abraham Lincoln and so on. She is a young Pashtun girl from Pakistan who is suppressed by the Taliban from getting an education
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Wage determination in perfect and imperfect markets Perfect competition In perfect labor markets‚ everyone is wage taker – both the employee and the employer. On the one hand‚ the employer and his firm cannot control the market as there are too numerous firms and the firm is price taker on the product market and labor market. On the other hand‚ the workers cannot control their wage as they have no economic power to do so or they are of a clearly definite type. In perfect competition there
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Alana Rogers Date of experiment:11-20-13 Date submitted: 11-23-13 Determination of Water Hardness Using a Titrator Purpose: This purpose of this experiment was to determine the hardness of the local water supply. Be familiar with using a titrator. To tell wether your water is hard or soft. Hard water however does not create a threat‚ but is bad for your pipes causing them to crust. To measure water’s “softness” you are truly measuring the amount of CaCO3 in the water. Procedure: Assemble
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Quantitative Determination of Sulphate by Gravimetric Analysis Table of Contents: 1. Synopsis 2. Objective 3. Theory 3.1: Summary 3.2: Technique 3.3: Chemicals 3.4: Instruments 4. Procedures 4.1: Precipitation of BaSO₄ 4.2: Washing and Filtration of BaSO₄ Precipitate 4.3: Drying and Weighing of BaSO₄ Precipitate 5. Results and Calculations 6. Discussions 7. Conclusion 8. References 1. Synopsis: This report is written about determining
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When you feel like giving up do your parents push you‚ or do you perceiver and keep trying. Well‚ thats determination‚ which I think is the key to success. Determination helps people get through things‚ although skills and talents are your support you can’t do it without purpose or in other words determination. Determination is the key to success JK Rowling‚ Walt Disney‚ and Michael Jordan failed‚ but they believed and were determined to continue and look where they are now. Not all people were
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Whale Rider: Inner Strength and Determination The film Whale Rider opens with a man‚ Porourangi‚ standing next to his wife as she gives birth to twins. Unfortunately‚ the mother and the son do not survive leaving only the girl who is named Paikea. This greatly upsets Koro‚ Porourangi’s father. As the reigning chief of the Maori people‚ he would have taught Porourangi’s first born son in the ways of their ancestors to become the next chief (Wald 2006). After experiencing such a devastating loss
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Title: Determination of Iron in Natural water by Spectrophotometry. Aim: To determine the iron in natural water by spectrophotometry. Abstract: The iron in natural water was determined by utilizing spectrophotometric analysis. That was done by measuring the absorbance of five Fe(oPH)2+3 standards at 510 nm. From that information‚ a calibration curve was plotted and used to find the amount of Fe2+ that was in two unknown water samples based on the absorbance readings obtained with them at 510nm. The
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DETERMINATION OF BOILING POINTS Introduction: The boiling point of a compound is the temperature at which it changes from a liquid to a gas. This is a physical property often used to identify substances or to check the purity of the compound. It is difficult‚ though‚ to find a boiling point. Usually‚ chemists can only obtain a boiling range of a 2 - 3oC accuracy. This is usually sufficient for most uses of the boiling point. Purpose: The purpose of this experiment is to determine the
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