Gustavo Duran Per#5 Making Dilutions of Concentrated Solutions Purpose: To make dilutions of concentrated solutions and report their concentration in different ways. Hypothesis: I predict that at least one of the tubes will not change color because of the little concentration it has. Materials: Balance, analytical Balance, tabletop milligram weigh paper, 7.6x7.6 cm weigh boat, 3.5”x3.5” Lab scoops cupric sulfate 5-hydrate Tubes, 15 mL, capped Tube racks for 15mL tubes Deionized
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the right to use one of the most powerful technological solutions in the world. We say ‘powerful’ because eC-messenger is capable of sending out three million emails an hour. It is therefore suitable for all companies, regardless of size. Our solution stands out not only in terms of quantity, but also quality. Also, to ensure that you are always on the right side of the law, we have incorporated extensive anti-spam functions into our ASP solution. E-circle Adds to these advantages by offering extensive
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each test tube 9. Put the stoppers on each test tube and shake till the sodium chloride dissolves 10. Record observations; what happened when the solvent was mixed with the solute, color, odor (use waft test; carefully) and clarity of the solution 11. Clean out the test tubes thoroughly 12. Measure 10 mL of each solvent into 3 test tubes and label each test tube with what solvent the tube contains with masking tape 13. Measure 10 mL of each solvent into 3 more test tubes and
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increases so the does the rate of reaction. Equipment: * Milk Powder Solution * 2% Trypsin Solution * Distilled Water * 5 cm3 Syringes * 4 Boiling Tubes For Serial Dilution * 5 Boiling Tubes For The Main Practical * Stopwatch/Timer * Marker Pen * PAG 4.2 OCR Observation Sheet Health & Safety: The 2% Trypsin is a possible irritant of the eyes and can cause serious eye damage. The solution to this problem is to wear goggles for protection throughout this practical
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substance may present a hazard if it is poured down the drain untreated or placed in the trash. Based on these considerations, EHS recommends the following disposal procedures for ethidium bromide. * Electrophoresis Gels * Ethidium Bromide Solutions * Gloves, Equipment and Debris Electrophoresis Gels Trace amounts of ethidium bromide in gels should not pose a hazard. Higher concentrations, e.g., when the color of the gel is dark pink or red, should not be placed in laboratory trash.
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Extraction is a technique used for separating a compound from a mixture. An example is separating a water-insoluble organic compound from an aqueous mixture by extracting it into a water-insoluble organic solvent. These extractions are often part of the workup procedure for isolating and purifying the product of an organic reaction. Because trace amounts of water are often present at the end of an extraction process, a drying reagent is needed to ensure a dry product. The process of liquid-liquid
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APPROVALBOOK.COM Page 1 New Heritage Doll Company Capital Budgeting Solution NEW HERITAGE DOLL COMPANY CAPITAL BUDGETING SOLUTION New Heritage Doll Company Capital Budgeting Solution a great book which gives a great insight into the workings of a new heritage doll company capital budgeting solution. Clear descriptions of various systems within the new heritage doll company capital budgeting solution. Written from an american point of view but this doesn't really detract from a great book
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issues of the case and discuss your thoughts and opinions and more importantly why you think them!!!! If you want a really basic format that works, here is one: 1. Background & key facts 2. Main Problem Statement 3. Possible Solutions and Options 4. Your Recommended Solution & Analysis (WHY) Most cases will have questions that help you to tackle the case. I suggest that you maybe even read those questions before you read the case. This should help you in getting started. I do not want you to
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which the solution can be made. As the temperature increases, the particles of the solid move faster, which increases the chances that they will interact with more of the solvent particles. This results in increasing the rate at which a solution occurs. Temperature can also increase the amount of solute that can be dissolved in a solvent. Generally speaking, as the temperature is increased, more solute particles will be dissolved. For instance, when you add table sugar to water, a solution is quite
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2.04 AP Practice: Part 2 10/15 total points earned. Question 1 (Worth 5 points) The boxes described below have the same volume, but different dimensions and surface area. Use this data as the basis for a discussion of beneficial cell shapes. Essay Submission When the volume is too large relative to the surface area of the cell, diffusion cannot occur at sufficiently high rates to ensure this. Therefore cells size is wanted to be relatively small. Box A's surface area to volume ratio is
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