Paragraph 1 Quartz-type iron phosphate‚ FePO4‚ exists in different phases at different temperatures. At low temperatures‚ it exists in the α-quartz-type phase‚ while at high temperatures‚ it exists in the β-quartz-type phase. The α-β phase transition occurs at 980K. In terms of lattice symmetry‚ α-FePO4 exhibits a trigonal lattice system‚ whereas β-FePO4 exhibits a hexagonal lattice system. In terms of space symmetry‚ α-FePO4 belongs to the P3121 space group‚ while β-FePO4 belongs to the P6422 space
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Investigation of relationship between pressure‚ volume and temperature of gas Date of experiment: 12/11/2008 Aim of experiment: The objective of this experiment is: 1. To study the relationship between pressure and volume of a gas at constant temperature. 2. To study the relationship between the volume and temperature of a gas at constant pressure. Principles involved: When gases are compared‚ their volumes‚ temperatures and pressure are always involved. The volume of a gas is identical
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The Greenhouse Effect The greenhouse effect‚ in environmental science‚ is a popular term for the effect that certain variable constituents of the Earth’s lower atmosphere have on surface temperatures. These gases--water vapor (H2O)‚ carbon dioxide (CO2)‚ and methane (CH4)--keep ground temperatures at a global average of about 15 degrees C (60 degrees F). Without them the average would be below the freezing point of H20. The gases have this effect because as incoming solar radiation strikes
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he thought it was “cool”. The kid didn’t realize and know what the long term effects until he have experienced it. There are many chemicals found in cigarettes that can cause lung failure‚ heart problems‚ cancer‚ and even death. Carbon Monoxide is a poisonous gas found in cigarettes‚ which inhibits the flow of oxygen to the body. Formic Acid is an odorous liquid acid which also irritates your skin and mucous membranes and is used in the manufacturing industry. Nitrous Oxide is a toxic gas able
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The greenhouse effect‚ first discovered by Joseph Fourier in 1824‚ and confirmed by Svante Arrhenius in 1896‚ is the process by which an atmosphere warms a planet. The term greenhouse effect may be used to refer to two different things nowadays: the natural greenhouse effect‚ which refers to the greenhouse effect which occurs naturally on Earth‚ and the enhanced greenhouse effect‚ which results from human activities. While the greenhouse effect is a natural process‚ the enhancement of this process
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Effects of Temperature on Enzyme Biology Introduction In order to understand the activity of enzymes at different temperatures the ability of the enzyme to function can be measured. This is important in many applications such as Polymerase Chain Reaction for forensics as well as genetics research where manipulation of temperature-dependent enzymes allows for replication of DNA segments. Bennett states‚ “when the energy - measured
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discusses the mpemba effect and how it works. The definition of the word Mpemba is basically a question where you ask can hot water freeze faster than cold water it can be used as a science fair experiment and to solve other scientific questions.The key aspect discussed in this annotated bibliography is what the mpemba effect is what the history of the experiment is and how it is exactly used that is what it is about. Can hot water freeze faster than cold water.I think that the temperature will change throughout
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practical information‚ from a not very technical perspective. Weather and Climate Before we begin‚ let’s differentiate between weather and climate. Weather is the state of your local atmosphere at any given time‚ in terms of such measurements as temperature‚ wind speed‚ air pressure‚ precipitation‚ etc. Weather is very specific - it’s about a particular place at a particular time. It varies on a relatively small scale - for example‚ it could be raining in your area‚ while it’s dry 10 miles away. It
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Danielle Mowder Erica Towe English 11 March 9‚ 2015 The Greenhouse Effect Without the greenhouse effect the temperature of this planet would decrease by at least 30 degrees celsius‚ and it would be too cold for us to survive. The light we receive from the sun keeps our atmosphere warm. The earth only absorbs 30% of the sunlight because the other 70% is reflected back into space‚ and is absorbed by greenhouse gases. These gases act like a mirror‚ and reflect heat back to earth. The major greenhouse gases are carbon dioxide
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The Greenhouse Effect This essay is going to describe what the greenhouse effect is and what it does.It is also going to say what causes the greenhouse effect and the consequences of it. What is meant by the term the greenhouse effect is that the heat from the sun comes into the Earth’s atmosphere and cannot get out so becomes trapped.It gets its name because this is very much like a greenhouse.This effect occurs as the incoming short wave radiation is changed when it
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