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Antibiotics have played a major role in our society thanks to Sir Alexander Fleming"s careful observations in 1928. Without it, many lives would be in danger due to infectious diseases. Antibiotics are chemical substances produced by various species of microorganisms and other living systems that are capable in small concentrations...
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Avogadros number is the number 6.0221367 x 10^23, commonly rounded to just three significant digits: 6.02 x 10^23, and is the number of representative particles in a mole. Avogadro's number is commonly used to compute the quantities of substances involved in chemical reactions, called stoichiometry, and is one of the...
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I. Introduction A. The History of Carbon II. Occurrences in Nature A. Diamond B. Graphite C. Coal and Charcoal D. Amorphous Carbon III. Carbon Compounds A. Inorganic B. Organic IV. The Carbon Cycle V. Conclusion Carbon, an element discovered before history itself, is one of the most abundant elements in...
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Abstract: Should we begin to manufacture one of the most destructive and infamous substances on the face on the Earth once again? The engineers say yes, but the public says no. The United States stopped making this element with the ban on manufacturing nuclear weapons. But with the continuing problem...
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Introduction Acid rain has become an environmental concern of global importance within the last decade. With the increasing environmental awareness of the "unhealthy" condition of our planet earth the concern about acid rain has not lessened. In brief, acid rain is rain with pH values of less than 5.6. When...
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