Molecular formula from empirical formula 1) There is a whole number multiple of the empirical formula in the molecular formula MF – (EF) n Molar mass/ empirical formula mass = n EMPRICIAL FORMULA FROM COMBUSTION DATA 1) In a combustion reaction an organism sample is burned in the presence of oxygen and produces CO2 and H2O as main products. 2) A hydrocarbon is a molecule that contains only carbon and hydrogen 3) Combustion analysis of naphthalene‚ a hydrocarbon used in mothballs
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science of Chemistry. At the first time human being have found gold - a rare and the most valuable element in the world‚ people are attracted by its shiny and glowing appearance. They are trying to find different ways turning those ordinary base metals into worthy gold. This kind of transformation process started at the Middle Ages‚ named as Alchemy‚ was the initiation of the modern science of Chemistry. Alchemy is a difficult and complicated subject. It was not only focusing on chemistry stream
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The poem‚ "Suicide Note‚" by Janice Mirikitani‚ depicts an Asian-American female college student who committed suicide by jumping out of her dormitory window. Her last words‚ thoughts‚ and feelings were left behind in a suicide note‚ describing why this had to happen. This was a tragic accident that should not have happened‚ in fact‚ it should have been prevented. What drove this college student to kill herself? Was it her fault‚ or was she pushed so far that it became too much for here to take
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CHEMISTRY FOR HUMAN WELFARE: IT’S PROMISES AND CONCERNS 2011 had been officially declared “The International Year of Chemistry” t o commemorate the achievements of chemistry and its contributions to mankind. It is so fitting that 2011 is the centenary year for the award of Nobel Prize to Marie Curie for her discovery of Radium and Polonium. Also this is the 150th birth anniversary of Dr. P .C Roy. All living things in this beautiful world are nothing but
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AS Applied Science Luke O’Reilly Aim/background- Test soil from an area that previously had heavy industry on it to check for contaminants. Procedure- I will first visit a site that has previously has heavy industry located on it. Using protective clothing‚ goggles and gloves I will extract several samples of the soil from the site and then take several other samples from different points on the site. This ensures variety of soil to ensure that all the site is safe‚ not just a small area where you
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Antoine Lavoisier‚ deemed the father of modern chemistry‚ was born August 26‚ 1743 in Paris‚ France‚ but he did not pursue his love for science as a career until after he received a bachelor’s degree in law and obtained a license to practice law in 1764. Lavoisier always had a strong interest in the sciences‚ but was encouraged by his father to consider it only a hobby. However‚ in 1764‚ the same year he decided against practicing law‚ his first scientific paper was published‚ and he was elected
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Innovation: Championing 3M’s Post-it Notes by Knowledge@SMU‚ 13 April 2010 Go ahead and experiment with your idea. But what if I fail‚ you may ask. It is okay‚ said Geoff Nicholson‚ a former senior executive with multi-product manufacturer 3M‚ famous for its wide range of innovative products for both consumers and businesses. In fact‚ that is the trait you should look for in your employees – people who are not afraid to make mistakes – if you want your company to go far in innovation‚ said
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What is Brain Chemistry? Brain chemistry or neurochemistry is the complex system which allows the brain to function with the use of chemicals known as neurotransmitters which move information around in the brain. Every person’s brain chemistry is slightly different‚ and a number of things can play a role in the levels of various neurotransmitters in the brain‚ and how those chemicals affect the brain’s function. It is believed that difference in brain chemistry may explain a variety of behavioral
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“The Lost Art of Thank-You Notes” It has become unfortunate that something as simple as a thank-you note has been slowly forgotten and less prominent to the point that when one is actually received‚ it almost seems unusual. I believe Randy Pausch was correct when he said‚ “Showing gratitude is one of the simplest yet most powerful things humans can do for each other.” The thank-you note is old-fashioned‚ simple and personal at the same time. Nevertheless‚ the emotion and gratitude that the gesture
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In Chemistry there are many chemistry careers a person can pursue in one in particular would be a forensic chemist. Forensic chemistry is the application of chemistry; a forensic chemist can help identify unknown materials found at a crime scene. Forensic chemist has a wide array of methods and instruments to help identify unknown substances. Forensic chemistry is popular all around it is not limited to just one area. Attending college is important to become a forensic chemist and there is what you
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