daughter isotopes Metamorphism must not have taken place causing resetting of the radiometric clock The ratio of the two isotopes is constant in a living organism. When the organism dies the Carbon 14 is not replenished so the ratio of carbon 12 to carbon-14 gradually increases However the half life of carbon-14 is 5730 years and so is useful for up to about 50‚000 years old. Beyond this levels of it are so small that errors and so large as to make the measurements too uncertain. Interstellar gas
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properties of an organic molecule. There are many varieties of functional groups‚ for example; Hydroxyl (a simple group with oxygen and hydrogen bonded to one another resulting in high polarity) Carbonyl (with the presence of carbon double bonded to oxygen)‚ Carboxyl (a group with carbon double bonded to oxygen and also to a hydroxyl group)‚ and Amine (containing nitrogen bonded to what could be a variety of elements). Each of these groups provides specific properties that are vary depending on the quantity
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all functional groups in A (b) For each of the carbon X‚ Y and Z in compound A‚ determine (i) the type of hybridization (ii) the bond angle (c) A is optically active. Mark on the structure the chiral centre(s) in A. 2. (a) Draw structural formula of (i) a haloalkane with one tertiary carbon (ii) a simple alcohol with one secondary carbon (iii) a secondary amine with molecular formula C5H11N
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Jovellanos‚ Bien Jindrich Johannes; Lacson‚ Danise Angelica; *Lagula‚ Nina Francesca; Lañez‚ Kristine Department of Psychology College of Science University of Santo Tomas España Manila 1015 Abstract A hydrocarbon is strictly composed of carbon and hydrogen atoms only. Five hydrocarbons were used namely hexane‚ cyclohexene‚ toluene‚ naphthalene (in hexane)‚ and the unknown (which will be known through parallel chemical tests). Three tests‚ nitration test‚ bromine test and basic oxidation
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illustrates the carbon cycle in nature. Write a 150-word description of this diagram for a university lecturer. © The National Center for Atmospheric Research Model Answer The diagram shows how carbon moves through various stages to form a complete cycle. This report will give a brief description of the main stages in this cycle. First‚ we can see that energy from the sun is transformed into organic carbon through a process in plants known as photosynthesis. This organic carbon is then transferred
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Diamond is the ultimate abrasive. Diamond crystallizes in the Isometric system. A diamond is one giant molecule of carbon atoms. Diamond Diamond is Transparent and possesses shiny appearance. Diamond is very hard. Diamond is an excellent electrical insulator. Diamond is the ultimate abrasive. Diamond crystallizes in the Isometric system. A diamond is one giant molecule of carbon atoms. Graphite Graphite is black and possesses dull appearance. Graphite is comparatively softer. Graphite is
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compounds are the complex compounds of carbon. Because carbon atoms bond to one another easily‚ the basis of most organic compounds is comprised of carbon chains that vary in length and shape. Carbon atoms have four valence electrons that make them bond with each other easily. Thus organic compounds are classified according to their carbon chains that vary in length and shape. Hydrogen‚ nitrogen‚ and oxygen are the most common atoms that are generally attached to the carbon atoms. Organic compounds can
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DETAILED LESSON PLAN IN ADVANCED CHEMISTRY IV- Euler LEARNING OBJECTIVES At the end of the lesson‚ students are expected to: Write the IUPAC name of certain alcohol compounds; SUBJECT MATTER Topic: Nomenclature of Carboxylic Acid References: General‚ Organic and Biochemistry by Denniston‚ Topping and Caret. Page 283-289. Fundamentals of General‚ Organic and Biochemistry by John R. Holum. Page 418-425. Materials: Ball and stick model of compounds Overhead projector Textbooks Pictures of certain
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Nor Amirah Farhana Nawawi‚ Mia Organic Chemistry Lab Report 2 Jessica Sammons TITLE: Preparation of 2-butanone INTRODUCTION: The goal of this experiment was to prepare 2-butanone from 2-butanol. Chromic acid was used in this experiment to in order to prepare 2-butanol. Cr (VI) is rather orange‚ but Cr (III) is dark green - therefore by oxidizing the alcohol (2-butanol)‚ an orange Cr (IV) is reduced to green. NMR and IR tests were taken to determine the result‚ and the crystallized derivative of
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Bonds Simple Bond Double Bond Triple Bond Simple‚ Double or Triple Suffix -ane -ene -yne Cyclo + Number of carbons +suffix Characteristics They can be in a straight-chain or can have branches. You have to search for the parent chain‚ the longest carbon chain that contains the double bond. You search for the parent chain‚ which contains the triple bond. Its carbons are united forming a closed figure. Isomers Structural Isomers Stereo isomers (geometric isomers) Structural
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