* Introduction to Organic Chemistry Understand the basis of drawing organic structures Depicting 3-D structures in 2-D Most organic compounds have a three-dimensional structure. How do we represent structures on our two-dimensional page? For example‚ methane is a tetrahedral molecule: Bonds in the plane of the paper: Bonds coming towards the observer: (out of the page) Bonds going away
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Fireworks and What Makes Them Go Sparks! Colors! Things that go BOOM! Chemistry doesn’t get much better than this. Ever notice how minutes drag on for hours when you’re waiting for a fireworks show to begin? Everyone’s thinking the same thing: The sky is dark enough the hot dogs are all eaten…come on when are they going to start? Then the first rockets streak into the sky…Ooh! Aah! Yes‚ it was worth the wait. The birthplace of fireworks is generally recognized as China.
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changes from solid state to gaseous state the moment it turns in to gaseous state and gases have a property to spread in all directions. After lightening the incense the molecules of perfume are in a gaseous state and mixing with the molecules of air in the room. All of them undergo random motion at all times as a result of the internal ("heat") energy that they have absorbed. The molecules often bump into each other‚ which causes them to mix if they were not mixed previously. Q-4. How does the
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Match and Water in a Glass Science Magic Trick Fun Trick with Fire and Water This is a simple and interesting science magic trick involving fire and water. All you need is water‚ a glass‚ a plate‚ and a couple of matches. Pour water into a plate‚ light a match in the center of the dish and cover it with a glass. The water will be drawn into the glass. Match and Water Trick Materials • plate • water • 2 wooden matches • a quarter or other large coin • colored water
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Teachers always talk about being creative‚ is it actually true that being creative is useful or is it just a meaningless subject? In the book‚ “A Semester In The Life Of A Garbage Bag” by Gordon Korman‚ many themes are shown throughout. There are two main characters‚ Raymond Jardine and Sean Delancey. Jardine is a unlucky individual who want to go to a island called Theamelpos‚ Greece. Sean Delancey is a varsity basket ball player (point guard) who is very popular and lucky. Both of these individuals
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Air Pollution * Pollutants enter the air from various sources‚ but burning of fossil fuels contributes the most to air pollution. * Exhaust fumes from vehicles contains soot (tiny carbon particles)‚ lead (from cars using unleaded petrol)‚ carbon monoxide‚ oxides of nitrogen and hydrocarbons due to the incomplete combustion of fossil fuels. * Burning of fossil fuels in the combustion engines of vehicles and electrical power stations also releases large amount of carbon dioxide into the
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Air Conditioning Psychrometrics Course No: M05-005 Credit: 5 PDH A. Bhatia Continuing Education and Development‚ Inc. 9 Greyridge Farm Court Stony Point‚ NY 10980 P: (877) 322-5800 F: (877) 322-4774 info@cedengineering.com AIRCONDITIONING PSYCHROMETRICS AIR CONDITIONING PSYCHROMETRICS In air-conditioning system‚ the air must undergo one or several of the following processes: Psychrometrics can be used to predict changes in the environment when the amount of heat and/or
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Air Pressure Air is composed of molecules. Air is matter. It has mass and takes up space. Air is composed of different gases such as nitrogen‚ oxygen‚ carbon dioxide‚ water vapor‚ and other gases. Air molecules are in constant motion. As they move‚ they come in contact with surfaces. Air molecules push and press on the surfaces they contact. The amount of force per unit area that air molecules exert on a surface is called air pressure. (What is Air Pressure 6) Air pressure is caused by all
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Air China Limited ("Air China") and its predecessor‚ the former Air China‚ were founded in 1988. According to the "Civil Aviation System Reform Program" which was approved and passed by the State Department in October 2002‚ the former Air China consolidated with China National Aviation Company and China Southwest Airlines and founded China Aviation Group Company. Based on the combined air transportation resources of the three entities‚ the new Air China Company was established. On September 30th
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levels from June until September‚ and air conditioning is needed to keep temperatures comfortable indoors. Michigan residents have to deal with extreme heat in the summer and extreme cold in the winter. Many visitors from other states are unaware of how hot Michigan can get in the summer. Air Conditioners Are a Necessity in Michigan A fan will not suffice on hot sunny days. Fortunately‚ many homes in the Wolverine state are equipped with air conditioning. When an air conditioner malfunctions‚ the unit
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