EXPERIMENT 2: SOLUTION PREPARATION AND STANDARDIZATION Submitted by Iris Olaso ______________________________________________________________________________ INTRODUCTION Generally‚ there are two ways in preparing a solution‚ one is by dissolving a weighed amount of solid in a required solvent and the other is by dilution of a concentrated solution into the desired concentration. In diluting concentrated solution‚ the concentration of the diluted solution can be determined by standardization
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TUTORIAL1 WITH INFORMATION TO SOLUTIONS 1. For most products‚ higher prices result in a decreased demand‚ whereas lower prices result in an increased demand. Let d = annual demand for a product in units p = price per unit Assume that firm accepts the following price-demand relationship as being realistic: d = 800 – 10p where p must be between $ 20 and $70. a. How many units can the firm sell at the $ 20 per-unit price? At the $ 70 per-unit price?
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Subject: English Teacher: Raúl Vega Objective: To realize how important is to take care of our planet. Task: Read and write your own comment about these important topics. (No more than five lines) Web site: http://www.climatehotmap.org/global-warming-solutions/ Dead line: From October 6th to October 8th. Until 5:00pm. Details: 1) For: Fourth Semester. Parallel: D Topics: a) Boosting energy efficiency b) Greening transportation c) Revving up renewable 2) For: Fourth Semester. Parallel: E Topics: d) Phasing
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Joscely Garris Professor Vinh Hoang CHEM 1151L – 254 25 October 2013 Preparation of Viscous Solution This report discusses an experiment to study the relationship of solute/solvent and the calculations involved to measure the concentration of the solution. The first experiment to take place is the preparation of a salad dressing using xanthan gum solution‚ water and oil. Commonly used as a food thickening agent‚ Xanthan gum is a large molecule composed of several saccharides linked together
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CAT 2007 Solutions Section I 1. Note that the price of Darjeeling tea remains constant after the 100th day (n=100). If the prices of the two varieties of tea become equal before n = 100‚ then 100 + 0.1n = 89 + 0.15n ∴ n = 220‚ which is not possible. (Since n has been assumed to be less than 100) ∴ The prices of the two varieties will be equal after n = 100‚ i.e.‚ when the price of Darjeeling tea = 100 + 0.1 × 100 = 110 ∴ 89 + 0.15n = 110 ∴ n = 140 2007 is not a leap year. Number of days till 30th
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Solution-Focused Therapy Solution–focused therapy (SFT)‚ unlike other forms of therapy argues that a person doesn’t have to understand any problem in order to resolve the problem and that the solution isn’t necessarily related to the problem. The purpose of this paper is to give a brief overview‚ description and rationale of Solution-focused therapy as well as an explanation of the therapeutic processes involved in SFT. This paper will also demonstrate through case example; systemic case conceptualization/hypotheses
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Concentration of a Solution: Beer’s Law The objective of this experiment is to determine the concentration of an unknown copper sulfate solution. You will be using the Colorimeter. In this device‚ red light from the LED light source will pass through the solution and strike a photocell. A higher concentration of the coloured solution absorbs more light (and transmits less) than a solution of lower concentration. The Colorimeter monitors the light received by the photocell as either an absorbance
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BUFFERS By: Luis P. Bazan‚ RPh.‚ Ph.D. A buffer solution is a solution of: 1. A weak acid or a weak base and 2. The salt of the weak acid or weak base Both must be present! A buffer solution has the ability to resist changes in pH upon the addition of small amounts of either acid or base. Consider an equal molar mixture of CH3COOH and CH3COONa CH3COOH (aq) H+ (aq) + CH3COO- (aq) Adding more acid creates a shift left IF enough acetate ions are present 16.3 Which of the
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Taylor Tomczak POLS 301 20 May 2013 Change & Proposed Solutions I began to take interest in the Child Protective Service procedures because of all the neglect I have seen in the news‚ mainly the Jaycee Dugard ordeal. Another recent Child Protective Service blunder was the case of Ariel Castro‚ who abducted three girls ten years ago. It’s baffling to me that Child Protective Service case workers can visit a residence and not completely investigate the situation. There have been many circumstances
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05.05 Mixtures and Solutions Background: Paper chromatography is one method for testing the purity of compounds and identifying substances. Paper chromatography is a useful technique because it is relatively quick and requires small quantities of material. Safety: Warnings: * Rubbing alcohol (or isopropyl alcohol) is flammable‚ so be sure to keep it away from high heat or heat sources. * Keep pigments and solutions away from your eyes‚ wash your hands carefully after coming in contact
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