Chemistry 2500- Exercise C4 The Emission Spectrum of Atomic Hydrogen Objective The purpose of this lab was to calculate an experimental value for the Rydberg constant and then the ionization energy for the hydrogen atom. These values will be obtained by using a prism spectrograph to measure the wavelength value for a section of the visible line spectrum of atomic hydrogen. Theoretical Background When H+ combines with an electron it forms it’s excited state‚ H. This excited atom
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The effect of exercise on heart rate Word Count THE EFFECT OF EXERCISE ON HEART RATE Abstract - Aims - This study is to ascertain‚ if there is an effect on heart rate after exercise. This is being done to see‚ if there is a difference between resting heart rate and heart rate after performing exercise. Method and results - The study was compiled of seven female students from the University of Huddersfield. For the exercise a step was used‚ a polar heart rate monitor was used for
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person being infected with Leptospirosis might lessen. The benefits of an organic fertilizer compared to a chemically made fertilizer are that the plants were able to grow taller‚ faster‚ healthier‚ and were able to bear more fruits. Our project will test if every day produce‚ such as the yogurt can be mixed with animal feces just like how egg shells and banana peels are used to decompose waste and create a rich‚ organic fertilizer. Our project will benefit not only the environment of Guam‚ but
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The Effect of Molecular Weight on the Diffusion Rate in Substances Nadjah B. Hadji Amer Gladys A. Oliveros Rochelle R. Yaῆez Jan Remon B. Caliguid Group 2- Sec. W78-1 August 14‚ 2013 A scientific paper submitted in partial fulfilment of requirements in Biology 101.1 under Prof. Kimverly Hazel Coronel‚ 1st sem‚ 2013-2014 ABSTRACT The effect of molecular weight on the rate of diffusion was assessed using the agar-water gel test. The agar-water gel set up was composed of a six petri
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now‚ farmers have taken to using pesticides and other methods in order to ensure a crop is more plentiful‚ therefore helping to alleviate some of the problems associated with supply and demand. But this is not a solution‚ it is instead almost adding to the problems our society faces today. This is where organic farming comes in. Although it may be hard to change society’s long standing opinion that mass-production by any means necessary is the right way to go‚ organic farmers are now making a larger
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on to Turnitin (via the module blackboard site). Essays that are not on Turnitin will not be marked and will receive a mark of zero. You do not have to submit a hard/paper copy to the SAC. Essay Titles: 1. Critically evaluate the main catalysts to growth in China and India. 2. Debate the view that unemployment will rise in the Western World as the economic strength of
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(in the second centrifuge tube). Now wash (microscale) the combined extracts with saturated NaCl solution (5mL)‚ then with 10% aqueous potassium carbonate (5mL)‚ then with saturated NaCl solution (5 mL) again. Dry the organic layer with anhydrous sodium sulfate. Decant the organic layer into a small beaker and concentrate to roughly 0.2 mL by evaporation in the hood (do not apply heat!). If the sample goes to dryness‚ re-dissolve in hexane (0.2 mL). *Set aside a small amount of your crude
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Phosphine General information Key Points Fire Gas‚ extremely flammable and spontaneously flammable in air Reacts violently with air‚ oxygen‚ halogens and other oxidants causing fire and is an explosion hazard Decomposes on heating or burning‚ releasing toxic phosphorus oxides fumes In the event of a fire involving phosphine‚ use fine water spray and liquid-tight chemical protective clothing and breathing apparatus Health Extremely flammable Very toxic by inhalation;
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are prime examples of the implementation of gas laws. The physics are based on the simple principle that warm air rises in cooler air. Hot air has less mass per unit of volume. The relevant gas law in use is Charless Law‚ which is V1/T1=V2/T2. The law states that raising the temperature (T1) will also increase the volume (V2)‚ in order to keep the equation true. Generally‚ air is heated through the use of propane burners. When ignited‚ the volume of the gas increases but the balloon cannot expand much
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The Effect of Sugar Type on Rate of Energy Production During Yeast Fermentation Sarah Sulon Biology Lab 111L Dr. Murray October 25 2010 Abstract The experiment was conducted to determine the impact different sugar types have on yeast fermentation. It was hypothesized that glucose‚ sucrose and fructose would all produce energy through yeast fermentation‚ but that sucrose would have the greatest rate of energy production. The carbon dioxide production was tracked in the fermentation of yeast
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