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 Effects of Bacterial Meningitis on the Brain Abstract Meningitis is an infection of the subarachnoid space (located between the middle arachnid matter and the inner pia mater) of the meninges‚ which is the thin layer of tissues that line the brain and the spinal cord. Cerebrospinal fluid flows through the subarachnoid space and the meninges‚ providing cushion for the brain and the spinal cord‚ and filling the internal spaces within the brain. There are 2 main types of meningitis
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GREENHOUSE EFFECTS IntroductionThe greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases‚ and is re-radiated in all directions. Since part of this re-radiation is back towards the surface and the lower atmosphere‚ it results in an elevation of the average surface temperature above what it would be in the absence of the gases.[1][2] Solar radiation at the frequencies of visible light largely passes through the atmosphere to
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Alcohol and its Effects Rachael Wade Ivy Tech Community College Alcohol and its Effects Alcohol can be a very harmful substance. Alcohol can be abused‚ and people can get addicted to it like any other drug. It can impair coordination and judgment as well as a lot of other things. Alcohol can also have long term effects on the organs in the body. It can affect people psychologically as well as behaviorally. Many deaths that occur each day are caused by alcohol. Consuming alcohol affects a
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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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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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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 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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we hear and are caused by vibrations that travel through mediums. Depending on the medium and temperature‚ the time it takes for sound waves to travel vary. The hypothesis states that if the temperature in the air increases‚ then the speed of sound will also increase because faster-moving particles transfer energy quickly. The data collected supports the hypothesis. Therefore‚ increased air temperature affects the speed of sound because the molecules move faster‚ which causes the energy to be transferred
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