4 Chlorine 5 Equilibrium Constant 6 Wavelengths and UV Rays 6 Rationale 7 Materials and Method 8 Results 14 Calculations 18 Discussion 24 Conclusion 25 Bibliography & Referencing 25 Aim To investigate if loss of concentration of chlorine in a swimming pool is dependent upon the wavelength of the colours in the spectrum and if so‚ which one has the
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Microwaves (3:04) 7. Where are Microwaves found on the electromagnetic spectrum? Microwaves have wavelengths ranging from 30 centimeters down to 1 millimeter. Microwaves fall between radio waves and infrared waves. 8. Describe one thing that C‐Band Microwaves are used for? Medium length C-Band Microwaves are used for revealing the Earth’s surface
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The origins of the monastery are due to the 4th century AD. FTIR–ATR spectra were collected on a Perkin Elmer spectrometer 400 equipped with an ATR detector (attenuated total reflectance) in the wavelength range of 4000–650 cm–1‚ at a spectral resolution of 4 cm–1 over 32 scans. In attenuated total reflectance (ATR) spectroscopy‚ the sample is placed in contact with a special crystal which is composed of a material with a high index of refraction
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Nanotechnology | Colour of Gold | Practical Investigation Report | | Introduction Gold is a precious metal which has been used for years and when we think of gold we think of shining bars in a bank vault‚ coins or beautiful jewellery. When we think of gold it’s usually a shining yellow gold however can come in many colours. The colour of gold can range from red through the visible spectrum to purple and violet. Aim The whole point of this experiment was to create gold that wasn’t
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objectives for the experiment. 1.)To determine the concentration of a solution of cytochrome c (cyt c) by comparison of its light absorption with the light absorption of a standard 0.1mg/ml solution. 2.)To plot a spectrum of light absorption against wavelength for cyt c. 3.)Prepare a series of cyt c standard solutions of known concentration and to plot a calibration graph of light absorbance against concentration. 4.)Measure the concentration of a solution of cyt c of unknown concentration.
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absorb light at specific wavelengths and can be defined by the equation A = log (Io/I). This equation states that an absorbance at a specific wavelength‚ A is equal to the log of the ratio of incident light intensity (Io)‚ to transmitted light intensity (I). A spectrophotometer can be used quantitatively and qualitatively. A spectrophotometer is used qualitatively to obtain an absorption spectrum‚ which can be obtained by plotting the absorbance values‚ over the range of wavelengths tested for the solution
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referring to electromagnetic radiation that is visible to the human eye‚ and is responsible for the sense of sight.[1] Visible light is usually defined as having a wavelength in the range of 400 nanometres (nm)‚ or 400×10−9 m‚ to 700 nanometres – between the infrared‚ with longer wavelengths and the ultraviolet‚ with shorter wavelengths.[2][3] These numbers do not represent the absolute limits of human vision‚ but the approximate range within which most people can see reasonably well under most circumstances
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Global warming Global warming has been a hot topic in recent decades. According to the Climate Literacy‚ global warming refers to is a natural phenomenon whereby heat-trapping gases in the atmosphere‚ primarily water vapor keep the Earth’s surface warm. Human activities‚ primarily burning fossil fuels and changing land cover patterns‚ are increasing the concentrations of some of these gases‚ amplifying the natural greenhouse effect.. I had learned some basic concepts about global warming when
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Position of Resonance | Second Position of Resonance | Wavelength (m) | Velocity of Sound (m/s) | | 1 | 2 | 3 | Average (cm) | 1 | 2 | 3 | Average (cm) | | | 512 | 15.8 | 15.3 | 15.5 | 15.5 | 49.2 | 49.4 | 49.1 | 49.2 | 0.674 | 345 | 384 | 21.0 | 21.2 | 20.9 | 21.0 | 67.1 | 66.2 | 66.1 | 66.5 | 0.910 | 349 | 320 | 25.2 | 25.4 | 25.1 | 25.2 | 79.4 | 79.5 | 79.7 | 79.5 | 1.090 | 349 | CALCULATIONS Calculation 1: Determining wavelength with frequency. 12λ=L2-L1 12λ512=0.492 m-0.155
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= a() * b * c where A is the measured absorbance‚ a() is a wavelength-dependent absorptivity coefficient‚ b is the path length‚ and c is the analyte concentration. When working in concentration units of molarity‚ the Beer-Lambert law is written as: A = * b * c where is the wavelength-dependent molar absorptivity coefficient with units of M-1 cm-1. Results Table 1: Observations for the maximum absorbance of Fast Green Wavelength Measured Absorbance 460 nm 0.043 480 nm 0.017 500 nm 0
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