100mL beaker. 4. Place the penny in the HCl solution etch side up and record observations for 3-5 minutes. 5. Place the beaker in your lab drawer. 6. Answer question #1 for tomorrow. Read and prepare a data table for Day II. DAY II 1. Using your forceps‚ carefully remove the fragile copper jacket that is left from the penny. Rinse it gently in distilled water. 2. Dry the penny in acetone solution. Swirl the penny in the solution. 3. Pour the acid solution from your beaker into the waste container at
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allmarketresearch.com/wiki/global-and-china-atm-industry-2013-deep-research-report.php“. 2013 Deep Research Report on Global and China ATM Industrywas a professional and depth research report on Global and China ATM Industry. Firstly the report describes the background knowledge of ATM‚ including ATM(Automated Teller Machine) CRS(Cash Recycling System) Concepts Classification production process technical parameters; then statistics Global and China 15 Manufacturers ATM CRS product 2010-2016 Capacity production
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12th 2012 Osmosis Lab Purpose: The purpose of this lab is to investigate the effects of osmosis on a potato cell as it is immersed for a period of time in solutions of different water concentrations. Hypothesis: If the potato is immersed into the distilled water‚ then it will be the heaviest out of the three. This is because water is at the lower is moving toward the area of higher concentration‚ which in this case is the potato. This solution is a hypotonic solution which is exactly opposite
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the estimator and the nature of the process. Semiconductor chips may differ substantially in the finishing necessary to obtain a final product. The amount of work necessary to finish a product may not always be easy to ascertain in advance. 17-5 The five key steps in process costing follow: Step 1: Summarize the flow of physical units of output. Step 2: Compute output in terms of equivalent units. Step 3: Summarize total costs to account
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answers to the following questions. (a) If events A and B are mutually exclusive and collectively exhaustive‚ are Ac and Bc mutually exclusive? Solution Ac ∩ Bc = (A ∪ B)c = Ωc = ∅. Thus the events Ac and Bc are mutually exclusive. (b) If events A and B are mutually exclusive but not collectively exhaustive‚ are Ac and Bc collectively exhaustive? Solution Let C = (Ac ∪ Bc )c ‚ that is the part that is not contained in Ac ∪ Bc . Using De Morgan’s Law C = A ∩ B = ∅. Thus‚ there is nothing that is
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“Suggested Solutions to Exercise” in Financial Accounting for Management by Ramachandran & Kakani Authored by Ram Kumar Kakani‚ “Copyright with Tata McGraw Hill Education Private Limited‚ 2011” CHAPTER 2 Balance Sheet Note: Answers to only half the questions have been provided. It gives you an opportunity to work on the rest problems and discuss about the relevant solutions. You are requested to complete this chapter before attempting the questions. MULTIPLE CHOICE QUESTIONS 1. 2. 3. 4. 5. 6. 7. 8
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Conclusion: The purpose of this lab was to synthesize and purify aspirin. The theoretical yield was calculated to 3.766g. The actual yield of pure aspirin was 2.863g with a yield of 76%. The percent yield indicates that our synthesis was a success but the yield is low and indicates that some of the aspirin was lost during synthesis. Some reasons for loss can result from human error such as loosing product from sticking on the spatula and the Buchner funnel and several weighings. Also‚ when transferring
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Maddie Sanchez 5-13-13 Period 5 I. Title: Titration Lab II. Purpose: To determine the concentration of an acid or a base exactly by neutralizing the acid or base with an acid or base concentration. III. Materials: The materials needed are a burette‚ boat dish‚ soap‚ beaker‚ ring stand‚ clamp‚ funnel‚ phenolphthalein (indicator)‚ scale‚ 250 mL flask‚ distilled water‚ stirrer‚ acid‚ and base. IV. Procedure: This lab was done in two days. On day one the first thing
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not be able to afford college or won’t be able to pay off their debt. College debt is becoming a problem but there are solutions that such as‚ scholarships‚ working and saving‚ and attending state or community college. There are many solutions to college debt but the best solution is seeking scholarships. More and more students are getting into college debt
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Purpose: the purpose of this part of the lab is to see the effects of enzyme concentration on the reaction rate. Part 2: Effect of Substrate Concentration Purpose: The purpose of this part of the lab was to find the effect of substrate concentration on enzyme activity. Part 3: Effect of Temprature Purpose: The purpose of this part of the lab was to determine the effect of temperature
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