Practical 3 Absorption Spectra and the Beer-Lambert Law INTRODUCTION Electromagnetic radiation can be described in terms of frequency (V) and wavelength (λ). Absorbance is the capacity of a substance to absorb radiation and transmittance (the fraction radiation at a specified wavelength that passes through a sample) is physical properties that all molecules have. The purpose of experiment one was to find the maximum absorbance (λmax) occurred for both bromophenol blue and methyl orange by
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Section 7D Date Work Performed: October 18th 2012 Date Report submitted: October 25th 2012 Abstract Absorption spectroscopy is a practical way to find what the light absorption of a substance is‚ and whit this data combining the Beer’s law equation you can determine the concentration of different things in a solution‚ in this case using a orange Gatorade looking the concentration of its dye which is yellow dye #6 and what amount of this Gatorade sample is needed to kill someone. The outcomes
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According to the article it seems the retail store we all know as JC Penny hasn’t been doing so well as far as their sales have been going which is something the public was probably unaware of. The article stresses how well they are doing and the come up they made however are they really making a come up. By the end of the year will they meet their sales needs? The article explains. According to the article JC Penny‚ “the company is seeking to calm investors who are growing pessimistic about a turnaround
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Penny Synthesis Essay To “… not ban pennies‚ but merely discourage their use by establishing a system…” It is because I agree with Mark Lewis of Forbes.com‚ that I affirm abolishing the penny‚ yet with some restrictions. In 2001 a United States Representative by the name of Jim Kolbe introduced a proposition to eliminate the penny (United States’ lowest denomination coin). To deeply reason as to why an individual might support this proposition‚ we must look at three different points of analysis
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Environmental effects of copper Copper can be released into the environment by both natural sources and human actions. Examples of natural sources are wind-blown dust‚ decaying vegetation‚ forest fires and sea spray. Other examples are mining‚ metal production‚ wood production and phosphate fertilizer production. Because copper is released both naturally and through human activity it is very widespread in the environment. Copper is often found near mines‚ industrial settings‚ landfills and waste
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Introduction: Experiments 1 and 2 main aims are as follows: • To able to use the Beer-Lambert law to explain the relationship linking concentration and absorbance of the coloured solutions methyl orange and bromophenol blue. • To be able to rightly operate a spectrophotometer to assess the absorbance at various wavelengths • To be able to identify the main component parts of a spectrophotometer • To be able to draw a ‘Standard Curve’ from the data collected
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Formal Percent Composition Lab Report Percent Composition is the composition of space given as a percentage. This is the percent composition formula‚ that would help us solve our experiment. Percent composition is important because it shows how much a certain substance is comprised of one component or other Percent composition is used in our everyday life’s. For example if you want to measure how much sugar you have ate. Or how much calories have you gained. Or just how we did in our
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Penny Press Until the early 1800’s‚ newspapers in England and America were expensive and therefore exclusive to the wealthy and literate minority. On average‚ newspapers would cost around six cents per issue and were usually sold through subscription only. Readers would have to pay for a years’ worth of newspapers when first signing up for a subscription‚ and that cost could be a middle-class worker’s week’s wage. Most people could not afford newspapers and therefore could not receive daily news
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3rd‚ 2009 Lab Report #3: Copper Cycle Abstract: The purpose of the experiment is to cycle solid copper through a series of five reactions. At different stages of the cycle‚ copper was present in different forms. First reaction involves reaction between the copper and nitric acid‚ and copper changed from elemental state to an aqueous. The second reaction converted the aqueous Cu2+ into the solid copper (2) hydroxide. In the third reaction Cu(OH)2 decomposed into copper 2 oxide and water when heated
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Erica Chan Sinh Nguyen Dat Nguyen Wed 2:00-5:00 02/19/2014 OHM’S LAW I. Purpose The purpose of this lab is to help understand how voltage‚ current and resistance are closely related to one another. The outcome from this lab is to be able to differentiate when to use ohmmeter and voltmeter for the individual circuit. II. Theory Ohm’s Law states that the electric current through a material is directly proportional to the voltage across a piece of material (such as wire) while the resistance is held
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