Determination of Sulfate Eisman E. Morales TA: Jackeline Pennywiit Chemistry 121 02/14/2011 Purpose: To determine the percent sulfate in a sample using a semimicro scale gravimetric procedure. Procedure: Refer to pages 41-42 of General Chemistry volume 1 Laboratory Experiments by Judith Casey and Robert Tatz‚ Hayden McNeil Publishing‚ 2010 Report Sheet See attached report sheet. Report Questions 1. Explain how your calculated value for percent sulfate would be affected
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Na+ H+ Wallert and Provost Lab Excel with hard work and inquiry Ammonium Sulfate PPT Protocol Theory and Introduction: Ammonium Sulfate Precipitation is a classic first step to fractionate proteins by causing perturbations in the solvent with respect to ionic strength. Historically‚ separation methods were limited and as a result precipitation methods were highly used with very fine cuts in ppt conditions. As more choices of inexpensive and quality resins are commercially available precipitation
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The Copper A. In the text “the Copper” Glenn Gavin tells about his experience and viewpoints 20 months after he joined the Metropolitan Police. In the text are different subjects discussed. Glenn Gavin talks about his upraise inside the family and at school‚ the role of rules‚ his choice of carrier‚ and attitude toward politics. When Gavin was a kid his parents gave him a “guiding kick up the backside every now and then” (p. 1 l. 2). For example when he “came in late” (p. 1 l.3) or if he “was
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Terminating Nutrition and Hydration: Controversial Issues Nurses deal with moral and ethical issues daily. As health care advances with changes in legal and social issues‚ medical technology‚ and patient ’s rights‚ more ethical concerns will arise. Nurses must learn how to respect their patients by recognizing an individual ’s preference; therefore‚ granting them autonomy. According to Blais‚ Hayes‚ Kozier and Erb (2006)‚ "Autonomy refers to the self-determination and the right to make one ’s
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There are four major factors that often contribute to the formation of hydrothermal copper porphyry: 1) readily available mineralizing fluid solutions that dissolve and transport metals‚ 2) openings in rocks which allow permeable flow of hydrothermal fluids and the metals that they transport in solution‚ 3) available sites within the fractured rocks which allow for deposition of the minerals from solution‚ and 4) the requisite chemical reactions that contribute to that deposition (Bateman‚ 1967)
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In this lab‚ we changed copper into various forms using different chemicals and chemical reactions. The purpose of this lab is to demonstrate that the product of a chemical reaction depends on what is present at the time of that reaction. This lab also displays how matter cannot be created nor destroyed in a chemical reaction. In a lab‚ you must always make safety a priority in case of an emergency. In our lab‚ we made sure to wear closed-toed shoes as well as goggles at all times. We also performed
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Environmental effects of copper Copper can be released into the environment by both natural sources and human actions. Examples of natural sources are wind-blown dust‚ decaying vegetation‚ forest fires and sea spray. Other examples are mining‚ metal production‚ wood production and phosphate fertilizer production. Because copper is released both naturally and through human activity it is very widespread in the environment. Copper is often found near mines‚ industrial settings‚ landfills and waste
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6: The Copper Cycle CHEM 101 Lab-M/630 As an investigation of the copper cycle lab group 6 conducted an experiment on 6 October 2014 at Arizona State University laboratory that would demonstrate the cycle of reactions that copper (Cu) can produce when introduced to with other substances/reactant. The purpose of the investigation was to notice the transformation of a specific quantity of copper wire (g) as it undergoes its coordination reactions until a reduction method would yield copper (Cu) again
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new bonds form‚ so energy is taken in. So you will know that the first step will be bigger than the second step‚ the reaction will be endothermic. But if‚ the second step will be bigger than the first step‚ the reaction will be exothermic. Calculations Variables Fair test- The temperature was measured every 20 seconds. The Reactant was measured properly‚ so there is no mistake. But‚ I think that the results got affected by the reason that the cup is not a closed system. There was no covering
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Good hydration is important for athletes as their body lose water through sweat to keep it cool down. Control levels of fluid and water balance even before‚ during and after training or during matches are essential aspects for the athletes. For low intensity exercise lasting for a short duration such as low intensity training or during rest between each training session‚ water is very good for rehydration (Nutrition Australia‚ 2009). In addition‚ high intensity and endurance sports last longer than
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