Exercise 116 in Ch. 10 Free radicals (see Problem 115) are also important in many environmentally significant reactions. For example, photochemical smog, which forms as a result of the action of sunlight on air pollutants, is formed in part by the following two steps. NO_2 □(→┴(UV LIght) ) NO+O O+O_2→ O_3 The product of this reaction, ozone, is a pollutant in the lower atmosphere. Ozone is an eye and lung irritant and also accelerates the weather of rubber products. Write Lewis structures for
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Extraction of DNA from an Onion Molecular biologists and biochemists are involved with research in finding out as much as possible about the DNA in plants and animals. Although DNA was discovered in the 1950’s, there still remains a lot to be known about it, especially how it is used to determine the physical traits that we all have, and how it regulates the workings of the body. We should always remember that DNA is just a chemical named deoxyribonucleic acid. Because it is a chemical, we
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Miscibility is often expressed as a wt/wt%, or weight of one solvent in 100 g of final solution. If two solvents are totally miscible in all proportions, their miscibility is 100%. [1] And the experiment require the 80% and not 100% were based on the polarity. Water is the polar molecule and vegetable oil is not.Polarity is when one end is positively charged while the other end is negatively charged. Each water molecule is made of two hydrogen atoms and one oxygen atom. Only other polar molecules can
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Boiling Points and Intermolecular Forces Purpose: The purpose of this lab exercise is to test the theory and rules for London and dipole-dipole forces and using VSPER theory relate how these forces interact to affect the boiling points of hydrogen compounds of elements in groups 14 through group 17. Question: What is the trend in boiling points of the hydrogen compounds of elements in groups 14-17? Hypothesis: a) I predict that group 14 will have the lowest boiling point for each number
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Biology Professor Smith 27 November 2010 Analysis of a Leaf Extract Introduction: Photosynthesis occurs when proteins in plant cells absorb light. Chlorophyll, the most commonly known pigment in plants, absorbs red and blue light, while reflecting the color green. Because of this, many plants are found to be the color green. There are, however, a wide variety of plants that range in color from red to violet. This is due to the different number of plant pigments that compose a plant
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1) Hemmingway’s attitude toward Robert Cohn is somewhat of a suspicious and detached one. In the piece Hemmingway says, “ I always had a suspicion that perhaps Robert Cohn had never been middleweight boxing champion..” which tells me that he didn’t believe the man, and when Hemmingway says, “ At the military school where he prepped for Princeton, and played a very good end on the football team, no one had made him race-conscious.” It seems like he is just telling us the facts about Cohn and no
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over time Water structure 2 Hydrogen (H) and 1 Oxygen (O) (H2O) Characteristics of water -water is POLAR -opposite ends of a molecule have opposite charges - H+, O- Polarity and Hydrogen bonds -H+ attracts to O- and forms a hydrogen bond between water molecules -polarity and H-bonding are the reason why water has all of its special characteristics that support life! Cohesion -same type of molecules sticking together (water to water) -ex: water molecules
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MACROSCALE SYNTHESIS OF ACETYLSALICYLIC ACID 1Alleyromae O. Indong, 2Aldrin M. Pragacha, 3Vince Neil B. Balaguer 1Department of Physical Sciences, College of Science, Polytechnic University of the Philippines, Sta. Mesa, Manila, Philippines Date Performed: December 3, 6, 2014 Date Submitted: December 17, 2014 Abstract Acetylsalicylic acid or Aspirin is an analgesic, anti-inflammatory and antipyretic agent. It was synthesized to alter the corrosive nature of Salicylic acid that causes gastric
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Chemistry laboratory Pr. Zineb EDFOUF 3- Compound types CH 1213 Chemistry I Name: …………………………. Group: ….......................... Purpose: To examine the difference between ionic and covalent compounds and understand how their properties give rise to this categorization Introduction: It is amazing what early chemists accomplished even without an understanding of atomic make-up. Reading old chemistry textbooks shows how they justified some of their conclusions, which, with a few
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Polarity Management of Cost and Quality Dustin Klinger Kaplan University Polarity Management of Cost and Quality Polarities are interdependent pairs that support a common purpose yet tend to be contradictory of one other (Polarity Partnerships, para. 1). Some examples of polarities include: stability and change, individual and team, long and short term, autocratic and participatory and my topic, cost and quality. Any of these pairs are known to counter the other. In my case, it is important
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