Cu Metal Recycling Lab Mr. Nelson – Chemistry Purpose: The purpose of this lab is to carry out an extensive series of reactions based on the element copper. These reactions include; synthesis‚ decomposition‚ single and double replacement. In this experiment‚ recycling will also be introduced. Procedure: See attached Story board. Data and Observations and Data Analysis: Step Word Equation 1 Balanced Chemical Equation Type of Reaction Observations Copper + nitric Cu + 4HNO3
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Michelle Olson Lab report 4/25/14 Percent of Cu in a post 1982 cent PURPOSE: What is the experimental % of copper (Cu) in a post 1982 cent? In this lab‚ we will determine the % composition of a modern (post-1982) penny by using a strong acid called nitric acid (HNO3)‚ to react and dissolve the zinc core‚ leaving only the copper coating. Once only copper remains‚ we will then compare its’ absorbency to the other five post-1982 penny Cu concentrations made in this lab. INTRODUCTION:
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sodium hydroxide + hydrogen 2Na + 2H2O → 2NaOH + H2 iii) what would be the effect of the solution formed on litmus paper The solution is an alkali and so turns red litmus paper blue and red litmus paper turns red. f) Which metals on the table i) form coloured compounds? Fe‚ Cu Zn ii) have catalytic ability? Fe‚ Cu Zn iii) show multiple valencies? C iv) are hard? Fe‚ Cu Zn v) are highly reactive? Li‚ Na. K‚ F‚ Cl‚ Br 2. (a) Which of the two metals lithium
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Young people of my country conform and deviate‚ but in varying degrees. This is expressed by Suematsu in paragraph 3 of passage B where he states “Conform too much‚ and you are toast‚ deviate too much‚ and you are toast too.” in context to the school life. It is the same with Singapore. Young people of my country must find the perfect balance of conforming and deviating in order to be “popular”. And that answers the question as to why they conform and deviate. Even within Singapore‚ different
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moles of Cu initially obtained and at completion‚ differentiated. It was evident that the initial moles of Cu (0.0254)‚ did not regenerate all the amount‚ as 0.0124 moles of Cu was attained. In regards to this‚ the no. moles that was eliminated was approximately‚ 0.013. Respectively‚ in Figure 3‚ a large deviation amongst the initial and final quantity of copper‚ this implies that the rest of the mass that had diminished‚ was greater than the final product. These findings correlate to Figure 2 calculations
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EXPURMA CASE 2: AIR QUALITY SYSTEMS Inc. Time Context: August 6‚ Wednesday Point of view: Patrick Wallace‚ plant manager at Air Quality Systems Inc. Statement of the Problem: How to solve quickly the serious quality problem on the company’s main product line Objectives: * To be able to seek solutions on how AQS can resolve the quality problem on their main product line * To be able to have a concrete solution on AQS supply chain and proactively avoid similar product-quality problems
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CU2940 2.4 3.5 4.5 When a conflict arises with a colleague I ensure that I take this member of staff to a private area and arrange to discuss this properly at a relevant time for us both‚ If this arises quickly and this member of staff starts to discuss this in public I would try to calm this member of staff down and explain it’s not the time or place to do this in a respectable manner and move it to an office or an empty room. If the subject was serious I was ask another member of staff to
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Nancy Osgood argues that in American culture‚ several mechanisms perpetuate and communicate ageist images‚ stereotypes and myths. Do these mechanisms exist in your society? Nancy Osgood claims that in American culture‚ several mechanisms like common aphorisms‚ literature and the media always convey an idea -- the age is something to be denied or feared. Even though these mechanisms also exist in my social‚ China‚ they usually play
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rule when documenting sources is to be transparent. Ask yourself whether you could find the passage/image/publication/web site address with the information you have provided. To download a full guide on using the CU Harvard Reference Style‚ visit www.coventry.ac.uk/caw and follow the ‘CU Harvard Style’ links. The Harvard Reference Style is a simple referencing system used internationally by scholars and researchers. There are two elements: I. In-text citations: In the body of your paper‚ give the
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Determining the Ksp of Calcium Hydroxide by Titration of Saturated Ca(OH)2(aq) with HCl(aq) Abstract: Titration is a technique that has been used in this experiment to identify the Ksp value of calcium hydroxide in order to determine the extent to which the compound is soluble in water. A known volume of 50 mL of hydrochloric acid‚ a concentration of 0.05 M hydrochloric acid‚ a volume of 50 mL calcium hydroxide base‚ an unknown concentration
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