Lab 1: DETERMINATION OF DISSOLVED OXYGEN BY WINKLER TITRATION 1. Background Knowledge of the dissolved oxygen (O2) concentration in seawater is often necessary in environmental and marine science. It may be used by physical oceanographers to study water masses in the ocean. It provides the marine biologist with a means of measuring primary production - particularly in laboratory cultures. For the marine chemist‚ it provides a measure of the redox potential of the water column. The concentration of dissolved
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September 11‚ 2013 Starbucks New Tap App Marketing Plan Phase I‚ II‚ & III The new Starbucks Tap App will revolutionize the coffeehouse industry. This App will be the first to take the industry by storm‚ and effortlessly provide a quicker service in an industry driven according to time. The ability to save the consumer the needed time to prepare and get to work or the next meeting is priceless. Identification of the segmentation criteria that will affect the target market‚ and identification
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1.Ethical failures which led to housing crisis: Conflicts of interest‚ shifts in corporate culture‚ heightened competitive pressures‚ and lack of regulatory oversight created a perfect storm that enveloped the entire economy. The mortgage crisis was a result of too much borrowing and flawed financial modeling‚ largely based on the assumption that home prices only go up. Greed and fraud and easy money also played important parts before the mortgage crisis. Our history gives us some very good
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H2S (g) Given 13.2 g FeS and 10.2 g HCl‚ determine: (a) how much H2S is formed‚ (b) how much excess reactant is left. 1. Assign the oxidation number to each atom in: a. Ga2O3 b. H3PO4 c. Ca(MnO4)2 2. 100.00 g of sodium chloride is dissolved in enough water to prepare 10.0 L of solution. What is the molarity of the solution? 3. Calculate the empirical formula for the compound that contains 40.92% C‚ 4.58% H‚ and 54.50% O. 4. Write the (a) complete-formula equation‚ (b) ionic equation
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Plot Overview Krik? Krak! contains nine stories and an epilogue. Although the stories take place in Port-au-Prince or Ville Rose‚ Haiti‚ or New York‚ they do not overlap. The only exception is “Between the Pool and the Gardenias‚” which mentions women from earlier stories. All the stories are all about Haitian women trying to understand their relationships to their families and to Haiti. The epilogue‚ “Women Like Us‚” suggests that these women are related. The epilogue’s unnamed narrator‚ possibly
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humanity behind one of the most popular exotic animal and human interaction availabilities- touch pools. Through the combination of extensive research (which includes undercover first-hand observations and employee testimonies)‚ slight emotional appeals‚ and the support of a scholarly background‚ the WCDS and HSUS were able to provide an adept analyzation on how the personal intimacy of dolphin touch pools poses potentially hazardous health risks for both the animal and human‚
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8.4 Water 8.4.1 Water is distributed on Earth as a solid‚ liquid and gas y y y Define the terms solute‚ solvent and solution Solution a homogeneous mixture of two or more substances Solute a substance that is dissolved in another substance or the component of a solution present in a lower amount. Solvent a substance which can dissolve another substance or the component of a solution present in a greater amount. Identify the importance of water as a solvent Water is essential as a reactant
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Water purification is the process of removing undesirable chemicals‚ biological contaminants‚ suspended solids and gases from contaminated water. The goal is to produce water fit for a specific purpose. Most water is purified for human consumption (drinking water)‚ but water purification may also be designed for a variety of other purposes‚ including meeting the requirements of medical‚ pharmacological‚ chemical and industrial applications. In general the methods used include physical processes such
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Determination of Sulfate by Gravimetry Jose Luis E. De Guzman University of Santo Tomas‚ Sampaloc‚ Manila The determination of the percentage of sulfate in a sample is done as an instrument of learning a quantitative method of analysis‚ i.e.‚ of the gravimetric analysis. This type of analysis‚ which makes use of the weight of the samples was used for the experiment and required the precipitation of our analyte‚ SO4-2‚ and its filtration as a BaSO4 precipitate so as for weighing it. The weight
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Experiment 5 Gravimetric 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
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