Spectrophotometric Determination of Copper in Brass Your Name Here Partners: his/her name here Chemistry 1290-xxx Date Report is Due TA: TA’s name here Purpose: The primary purpose of this experiment was …… Another purpose of this experiment was …… Learning about this type of analysis was important in an everyday context because ... Safety Information: During this lab nitric acid will be used as an oxidizing agent and (NO2) nitrogen dioxide will form. This gas is extremely toxic‚ and should
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Table 1 Frequency and Percentage Distribution of Respondents According to Age Age Frequency Percentage 15-20 yrs old 13 13.00 21-25 yrs old 6 6.00 26-30 yrs old 11 11.00 31-35 yrs old 12 12.00 36-40 yrs old 17 17.00 41 yrs old and above 41 41.00 Total 100 100% Table 1 showed the Frequency and Percentage Distribution of Respondents According to Age. Majority of the respondents belong to age bracket 41 yrs old and above‚ having a frequency of 41 and percentage of 41%; ages 15-20 yrs old‚ having a
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Graphene replaced with copper Graphene nanoribbons have a current-carrying capacity two orders of magnitude higher than copper Recent research into the properties of graphene nanoribbons provides two new reasons for using the material for interconnects in future computer chips. In widths as narrow as 16 nm‚ graphene has a current-carrying capacity approximately a thousand times greater than copper while providing improved thermal conductivity. The current-carrying and heat-transfer measurements
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notebook computers for $800 a computer. Mrs. Otten‚ owner‚ decides to decrease the price of these computers to $750. As a result‚ the quantity demanded for notebook computers rose from 500 to 550. a. Calculate the percentage change in price ___________________ b. Calculate the percentage change in quantity demanded ____________ c. Calculate the elasticity of demand _______________________ d. Is it elastic‚ inelastic‚ or unit elastic? ____________________ e. Why might computers have this type
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How Important is the Penny? The one-cent coin‚ commonly known as the penny‚ was made legal by the Coinage Act of 1864. On the penny that we carry in our pockets‚ is the face of the 16th President of the United States‚ Abraham Lincoln. Throughout the years‚ the penny has helped shape our culture‚ by giving us sayings and idioms‚ such as ¨a penny for your thoughts¨ and ¨not one red cent”. Over the years‚ the penny has seen many things‚ yet now a conflict has arisen: Should the United States keep producing
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LAB 12 PERCENTAGE COMPOSITION OF HYDRATES Pre-Lab Questions: See page(s) 1 for calculations Purpose: The purpose of this lab was to learn how to determine the percent of water in a hydrate. Materials: Evaporating dish Ring stand Wire gauze Burner Crucible tongs Triple beam balance Copper(II) sulfate penta-hydrate Spatula Glass stirring rod Distilled water Procedures: See page(s) 1 and 2‚ for procedure steps 1-11 Observations and Data: 1. Mass of evaporating
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Composition of Concurrent Forces Abstract— The experiment aims to show the relationship of different forces acting at the same time by using different variables namely‚ the equilibrant force‚ the resultant‚ and the given forces Fa and Fb. The equilibrant force is the force that establishes equilibrium while the resultant is the addition of the given forces and is also the opposite of the equilibrant. The objective of the experiment is to determine the resultant of two forces experimentally‚ to
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Chilean Copper Mine BCOM/275 Resource: ―Over 30 Workers Trapped After Chilean Copper Mine Collapse‖ article found in the Electronic Reserve Readings. Research additional articles and information about the Chilean mine collapse. Write a 700- to 1‚050-word paper using this and other articles as a resource. Because communications must be designed with the audience in mind‚ answer the following questions: What are some considerations to remember given the different roles and people in the audience
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Quantitative Analysis: % Copper in an Ore May 3‚ 2006 Abstract: In this experiment we were given an unknown sample of ore. Using the spectrophotometric analysis and the electrogravimetric analysis‚ we found the unknown percentage of copper in the unknown sample of ore was to be 17.6% by mass. Introduction: Chemical analysis takes place under two different scenarios. In one case‚ you need to find out the chemical identity of some material. The first kind of analysis‚ in which the chemical
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Nichelle McClain Prof. Shaner GSW 1110 15 November 2010 Higher Percentage of Minority Inmates There are over millions of people incarcerated but African Americans and Latinos make up most of the prison population. To attempt to stop certain problems‚ the criminal justice system just put people behind bars and expects that everything will be fine‚ when in reality it isn’t because now the jails are becoming overcrowded. Dealing with the drug war‚ racial profiling‚ and people growing up in low-income
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