main purpose is to find out if how can charcoal be used as a filter and how does it work? Since charcoal is made out of carbon. According to Encyclopedia: "The use of special manufacturing techniques results in highly porous charcoals that have surface areas of 300 - 2‚000 square meters per gram. Charcoals are widely used to adsorb odorous or colored substances from gases or liquids." The problem with charcoals is that its production efficiencies are generally low‚ with as much as 60-80% of energy
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1. A student neglected to add sodium carbonate when extracting the tea leaves with hot water. Yet a very high yield of caffeine was obtained. The crystals melted at 202-214°C. Explain. • The sodium carbonate is supposed to be added when extracting the tea leaves with hot water in order to help purify the caffeine. So since the student neglected to add sodium carbonate the caffeine won’t be pure but the student would still be able to recover a large amount of caffeine. The literature melting point
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extremely important that we find a low-cost‚ carbon-neutral fuel. American chemist Dr. Daniel Nocera has devoted his career to finding this alternative energy source using photosynthesis as his inspiration. Photosynthesis‚ the conversion of solar energy into chemical energy stored in the bonds of glucose‚ is arguably one of the most important chemical reactions on earth. The maintenance of life on earth‚ our food‚ oxygen‚ and fossil fuels depend upon photosynthesis. In this process water and carbon
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Joseph Priestley was a famous scientist during the 18th century best known for is discovery of oxygen. He was born in Birstall‚ England on March 24‚ 1733. When Joseph was a boy he attended many different schools. He was sick very often when he was little this caused him to miss a lot of school. He began to learn to teach himself at home. This skill became very useful to him‚ as he got older. He then could very easily teach himself new concepts without a teacher. Then in 1752 Joseph began to attend
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Case: How Low Will You Go (Red Ruby) Sex sells claims many advertisers and now sales professionals. The aforementioned statement should not be the typical mindset of sales professionals because it has the potential to not only damage the reputation of a company‚ but the individual(s) who own it. In the case of OptiMotors‚ Bob Carlton‚ should take immediate steps to end discriminatory practices and restore his company’s respectability. He should take this specific action for these three sold reasons:
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1.0 Introduction to Cellular Communications Mobile Communications Principles Each mobile uses a separate‚ temporary radio channel to talk to the cell site. The cell site talks to many mobiles at once‚ using one channel per mobile. Channels use a pair of frequencies for communication one frequency (the forward link) for transmitting from the cell site and one frequency (the reverse link) for the cell site to receive calls from the users. Radio energy dissipates over distance‚ so mobiles must stay
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How does water temperature affect the amount of dissolved oxygen? Ⅰ. Introduction Dissolved oxygen is just one of the many ways to measure water quality. It means the volume of oxygen that is contained in water. The amount of dissolved oxygen in water usually determines the quantity of organisms living in that water. Dissolved oxygen levels vary by how much oxygen the water can hold‚ how much oxygen is produced by photosynthesis‚ and how much oxygen is consumed by respiration. If water is too warm
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Question/Purpose: The Question or Purpose of our lab is to answer the question “How is the germination of a seed affected by sunlight?” Experimental Hypothesis: We believe these results will occur. 1. The seeds that are water deprived (1 mL of H2O a day) will not grow very well due to a lack of water which is important in photosynthesis and also lacks nutrients. The seeds may also die off due to a lack of water. 2. The seeds that are have a proper amount of water (10 mL of
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Factors Limiting Photosynthesis The rate of photosynthesis increases with increasing light intensity. But too much light intensity can slow down the rate of photosynthesis because the light damages chloroplasts in the leaf. The higher the temperature the greater the rate of photosynthesis as photosynthesis is a chemical reaction and chemical reactions increase with temperature. But at temperatures above 40 C the rate slows down because the enzymes involved are destroyed
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between light intensity and photosynthesis that could normally be seen had the experiment taken place without errors. The graph should show an increase in arbitrary units the further away from the light source the beaker is because the greater the distance from the light source‚ the lower the light intensity and so less photosynthesis would take place in the algal balls. This would result in more CO2 being present because it wouldn’t be being used up during photosynthesis. The decrease in CO2 in the
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