Keep Your Driveway Looking Like New With A Sealcoat If your asphalt driveway is still fairly new and in good shape‚ you should consider having a sealcoat applied to protect it from deterioration. A sealcoat prolongs the life of the asphalt and enhances its appearance by restoring the dark color. It’s a good idea to have a new coating applied every few years over the life of the driveway. Here are a few things you may want to know. Why Sealcoating Is Necessary Your asphalt driveway slowly deteriorates
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orbuilt environment. Pollutants Major primary pollutants produced by human activity include: • Sulphur oxides (SOx) - especially sulphur dioxide‚ a chemical compound with the formula SO2. SO2 is produced by volcanoes and in various industrial processes. Since coal and petroleum often contain sulphur compounds‚ their combustion generates sulfur dioxide. Further oxidation of SO2‚ usually in the presence of a catalyst such as NO2‚ forms H2SO4‚ and thus acid rain.[2] This is one of the causes for
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|Name: |Date: | Graded Assignment The Game with No Name A friend of yours would like to capture the adventures of Lewis and Clark in a video game‚ but she needs your help. She wants the game to be awarded Top 10 Kudos like Super Mario‚ Rock Band‚ and SimCity. Read all the directions first and follow them carefully to get this new expedition rolling.
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Strontium Manganese Oxide Introduction The ternary inter oxide SrMnO3 was first characterized by XRD by Negas and Roth []. This perovskite type inter oxide crystallizes in the hexagonal form with the space group P63/mmC(194). This inter oxide is of considerable interest to materials scientists owing to its ability to accommodate a high degree of anion vacancies‚ crystal structure and its high Neel Temperature (TN). It also exhibits polymorphism with two different cubic and hexagonal structures
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3. What is the mass of 6.20 moles of potassium iodide? Mol( grams 4. How many moles are contained in 84.2g of potassium sulfate? 5. Calculate the number of molecules in 3.34 moles of carbon dioxide. 6. What is the mass of 3.01 x 1023 atoms of sulfur? 7. What is the mass of 2.41 x 1024 molecules of water? 8. What is the formula mass (molar mass) of ammonium nitrate? 9. How many moles are in 56.2 grams of bromine gas? 10. What
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several countries. 5. In urban areas‚ high concentrations of gases and particles from coal combustion and‚ in more recent decades‚ motor vehicles have produced severe loss of air quality and significant health effects. 6. Finally‚ emissions of carbon dioxide and other radiatively active gases‚ together with stratospheric ozone depletion‚ represent planet-scale assaults on the quality of our atmospheric environment. 7. In the Western world‚ stringent environmental legislations have been able to overcome
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How a faster pulse rate after exercise affects the amount of carbon dioxide in breath and how males and females pulse rates change or don’t after exercise Introduction There is a chemical reaction that takes place in this lab‚ O2 + C6H12O6 –> H2O + CO2 + ATP. This represents cellular respiration‚ the reaction. The reactants are Oxygen and Glucose. The products are water‚ carbon dioxide‚ and ATP. This reaction is split into 3 stages‚ the Glycolysis stage‚ the Krebs cycle‚ and the Electron Transport
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What sulfur mustard is * Sulfur mustard is a type of chemical warfare agent. These kinds of agents are called vesicants or blistering agents‚ because they cause blistering of the skin and mucous membranes on contact. * Sulfur mustard is also known as “mustard gas or mustard agent‚” or by the military designations H‚ HD‚ and HT. * Sulfur mustard sometimes smells like garlic‚ onions‚ or mustard and sometimes has no odor. It can be a vapor (the gaseous form of a liquid)‚ an oily-textured
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Among the most harmful and dangerous non-metal compunds are nitrogen oxides‚ sulphur dioxide‚ carbon dioxide‚ carbon monoxide‚ and hydrogen sulphide. These can cause devastating effects to human beings‚ plants‚ animals and the environment. Matals are generaly less harmful‚ although lead is extremely toxic. Hydrogen sulphide is a highly toxic gas. It has a very bad smell‚ often identified in rotten eggs and stink bombs. Hydrogen sulphide interferes with cellular respiration. If inhaled‚ Hydrogen
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Acid Rain Acid rain occurs when Sulphur Dioxide (SO2) is released into the atmosphere by electricity generation‚ motor vehicles‚ factories and by wildfires and volcanoes. Once released‚ the sulphur dioxide reacts with water to produce sulphuric acid. This has a pH of approximately 2-3 pH. This has a dramatic effect on water dwelling wildlife. Most water dwelling creatures can’t withstand water more acidic than pH 5. This causes the mass loss of life of animals such as trout‚ perch‚ frogs and mayflies
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