atoms can rotate and vibrate with respect to each other. These vibrations and rotations also have discrete energy levels‚ which can be considered as being packed on top of each electronic level. UV/Vis spectroscopy is routinely used in analytical chemistry for thequantitative determination of different analytes‚ such as transition metal ions‚ highly conjugated organic compounds‚ and biological macromolecules. Spectroscopic analysis is commonly carried out in solutions but solids and gases may also
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How has the study of chemistry affected the lives of ordinary people? Every single day‚ without even realising it‚ we use so many things that are brought to us by the discoveries and advances in chemistry. Many of these things we take for granted‚ and don’t even bother to question how it got there‚ why it is there‚ and how it works. Chemistry makes up everything in our lives‚ from the air that we breathe‚ to the plastic on the keyboard I’m typing on now‚ and a in depth study of some of the wonderful
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CHEMISTRY PROJECT WORK SESSION -2013-2014 ROLL NO- CLASS-XII ‘A’ SUBMITTED BY SUBMITTED TO ROHIT LAKHERA Mrs. ANITA BISHT CERTIFICATE This is hereby to certify that‚ the original and genuine investigation work has been carried out to investigate about the subject matter and related data collection
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Brown Paper Bag Speech “Dream as if you’ll live forever‚ live as if you’ll die today.” I chose to put this quote on my paper bag because it is a quote that I believe everyone should live by‚ and it is also my life’s motto. I also chose to decorate this bag with fall leafs for two reasons. One‚ because fall begins on September 22nd‚ and two‚ fall is one of my favorite seasons. Now I will show you a few things that both describe me and are most important to me. The first thing I chose to
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Chapter 1 Introduction Background of the Study Starch is a linear polymer (polysaccaride) made up of repeating glucose groups linked by glucosidic linkages in the 1-4 carbon positions. The length of the starch chains will vary with plant source but in general the average length is between 500 and 2 000 glucose units. There are two major molecules in starch - amylose and amylopectin. The alpha linkage of amylose starch allows it to be flexible and digestible. Starch-based biodegradable plastics
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chemically with any other atom to form any bond. Argon’s history begins in 1785 when Cavendish mixed air with oxygen and performed several electrical discharges over a mixture of potassium hydroxide. By this process‚ he converted nitrogen of the air into potassium nitrate. Then‚ he removed the oxygen excess‚ but there still remained a small amount of gas‚ no larger than 1/120 of the original volume of air. He considered that this difference had been caused by experimental errors. About 100 years later
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In the 18th and 19th centuries scientists wrestled with identifying and describing the nature of the “stuff” that produced change. One concept that became popular for a while was that of “caloric” (what we now call heat). “Caloric was originally conceived of as a quantity that would flow from a hotter object to a cooler one that would warm up as a result. It answered the need for a way for the cause of warming to get from here to there. Not only did caloric serve as a cause for warming‚ it
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Medicine Bag Essay Defining a family can be difficult because families are living‚ growing‚ changing groups of people. However our heritage and traditions can keep us connected to our past and lead us to our future. My medicine bag connects me to my mom’s side of my family. My mom helped with the medicine bag. The symbols in my medicine bag represent heritage‚ heirloom‚ a family tradition for‚ a tradition i plan to start. My first symbol is tamales to represent my heritage. Tamales
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[Your Name Here] Outline for “The Bag Speech” SPEECH 1100: Fundamentals of Speech D‚ Gemmel‚ Instructor [Insert Date] INTRODUCTION I. Every morning after I stumble up the stairs to the kitchen‚ I open the fridge to grab some milk. When I close the door‚ I peer at words of wisdom. My mom typed up a paper with her motivational quotes. The first is‚ “Relationships matter most in life”. I agree completely with my mom’s words. The relationships with my family‚ friends‚ God‚ and myself have
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surface of specimen Produces 3D image Magnification = x100‚000 Resolution = 5 nm (lower) Advantages Disadvantages Can produce coloured images Better resolution Better magnification Must be used in a vacuum (no air)- electrons are absorbed by molecules in air Expensive Training is required Natural colours can’t be seen Dangerous- kills living cells STAINING: Used to have better visualisation of cells under a microscope
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