Atmospheric pressure: the random collisions between gas molecules & surfaces • Rapid evaporation: temp drops & water is evaporation • Solids have the least random molecular motion • Under the same conditions of pressure and temp a liquid differs from a gas because the molecules of the liquid take shape of the container they are in. • The phase change in which a solid becomes a liquid is known as the melting. Liquid to gas is evaporation. Gas to liquid is condensation. Liquid to
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SCH4U UNIT 3: Thermochemistry Assignment May 2‚ 2011 1. Upon the addition of potassium nitrate to liquid water‚ the beaker feels cold. Explain‚ using appropriate terms: system‚ surroundings‚ heat‚ temperature‚ endothermic or exothermic. The endothermic process whereby the system of KNO3 crystals dissolving in the water absorb energy from the surroundings and the measured temperature of the surroundings (beaker‚ air) drops. 2. The phase change from
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Living in the Information Age SOS-110-OL009 January 2015 Emerging Trends in Nursing There are many trends emerging today that will have an impact on our future. No one knows exactly what the future will bring‚ we as humans are only capable of making predictions. One of the most prominent areas seen affected by emerging trends in the past and present is the healthcare field. Various aspects of healthcare will continue to grow and shape our future including: the nursing workforce‚ innovative medical
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a catalyst such as NO2‚ forms H2SO4‚ and thus acid rain. This is one of the causes for concern over the environmental impact of the use of these fuels as power sources. * Nitrogen oxides (NO3) - especially nitrogen dioxide are emitted from high temperature combustion‚ and are also produced naturally during thunderstorms by electrical discharge. Can be seen as the brown haze dome above or plume downwind of cities. Nitrogen dioxide is the chemical compound with the formula NO2. It is one of the
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Activated Sludge Process The activated sludge process is a wastewater treatment method in which the carbonaceous organic matter of wastewater provides an energy source for the production of new cells for a mixed population of microorganisms in an aquatic aerobic environment. The microbes convert carbon into cell tissue and oxidized end products that include carbon dioxide and water. Activated sludge plant involves wastewater aeration in the presence of a microbial suspension‚ solid-liquid separation
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“An Essay Explaining the Biochemical Processes that Occur During Decomposition in the Soil Using Organisms such as Bacteria‚ Fungi and Algae. It also Involves an Analysis of the Chemical Reactions Facilitated‚ Processes Involved‚ Mineralization and the Role(s) of Organic and Inorganic Compounds.” by Alicea Bigby-Smart ID #: 12480025 Montego Bay Community College Submitted in Partial Fulfillment of the Requirements of the Council of Community
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Final APES Review What you know: 1. Green revolution: intro of scientifically bred or selected varieties of grain that can greatly increase crop yields. 2. Things that cause seasons on earth: earth tilted on axis‚ sun distribution 3. Large scale hydroelectric projects around the world: 3 gorges dam‚ dams going on in india 4. Age distribution diagrams: ZPG=looks like a building that doesn’t change‚ bottom same as top. Slow growth=base a bit longer than top but not quite a pyramid
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Analysis of Hydrocarbons Jessa Grace B. Castillo* and Stephanie Chua Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines ______________________________________________ Hydrocarbons are organic compounds containing only hydrogen and carbons and further divided in major types. Hydrocarbons react differently in reagents. The basis of determining an unknown hydrocarbon is due to the differences in reactions of hydrocarbons. An unknown compound is determined using tests.
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SUBJECT: “Environment and Health” B. Tech. III‚ 6th Semester SUBJECT TEACHER: Bhaven N. Tandel Assistant Professor‚ Department of Civil Engineering‚ SV National Institute of Technology‚ Surat. bnt@ced.svnit.ac.in (+91) 98255 53175 AIR POLLUTION & HEALTH: Importance of Air pollution Air pollution is a major threat of the 21st century. Air pollution is woven throughout the fabric of modern life. Man has polluted air so much that clean air has become more than a luxury for
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Title: Redox Reactions Research Question: Is it possible to determine if a redox reaction took place by using only the equation? Hypothesis: Yes‚ I believe it is possible to determine if this reaction took place by using the oxidation numbers in the equation. Variables: 1. I cleaned the reaction surface to limit contamination 2. I held the chemicals at approximately a 90 degree angle for consistency Introduction: Redox reactions occur when both oxidation and reduction take place. All atoms
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