to breath. B. Water or more popular with H2O use to bath‚ drink and cook. II. According to article of Everyday Chemistry in the World around Us‚ our body contains a chemical compound which is combination of element. III. I will explain about important of chemistry in heatlth‚ food and clothes. Body I. Chemistry compound usually use to prepare a food or to make a food more tasted. A. As explain in the 2010 The Society of Flavour Chemist‚ to prepare a quality of food‚ process in making a food
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Bisulfite‚ and Iodoform tests. Also‚ a 2‚4-dinitrophenylhydrazone derivative synthesis reaction will be completed from which a melting point will be obtained. The chemical test results and the melting point analysis will be compared to the table of compounds given to find the unknown’s identity1. Experimental An unknown substance labeled Unknown 2 was obtained. Solubility test: Water (1 ml) was added to a test tube‚ and then the unknown (2-3 drops) were also added to the test tube. A pipet was
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of varying degrees of severity (Markel‚ 2004‚ 6th ed). Susan found that a compound in the insulation could have affected those technicians. Without knowing what that compound was it would take weeks maybe months for them to know if the long-term exposure in houses and offices would seriously affect consumer health. Susan went to the vice president of operations with this information to suggest that they find out if a compound in the insulation caused respiratory problems. He told Susan there is no
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Identification of Unknown Organic Compound by Melting Point (M.P)‚ Boiling Point (B.P) and Infrared Spectroscopy Methods and Background The main objective of this lab is to identify the given unknown organic compounds with various methods. Identification of an unknown compound is important to perform through the process of melting point (M.P)‚ boiling point (B.P) and Infrared spectroscopy (I.R). Index of Hydrogen deficiency (IHD) and elemental analysis makes an experiment more efficient in
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carbonyl compounds is useful in reactions because nitriles are versatile functional groups1. Not only are they versatile functional groups but they serve as precursors in several transformations. The cyano-group is found in many bioactive molecules and plays a role in hydrogen bonding to certain biological receptors.4 Nitriles are carboxylic acid derivatives because they can easily be converted to carboxylic acid under either basic or acidic conditions. Piperonal is an aromatic compound that is present
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Separation and Purification of Organic Compounds Codilla‚ Christine‚ Cristobal‚ Marian‚ Dionisio‚ Jermaine‚ Dumaquita‚ Vanessa‚ Edrosolo‚ Lyka‚ Esquivel‚ Christine1 1University of Centro Escolar‚ Makati Date Performed: December 5‚ 2012 Date Submitted: December 17‚ 2012 Abstract The distillation process was successfully done because of the separation of water from the acetone. When the distillate was lighted with the matchstick it produced flame which indicates that there was more presence
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Lab Two; Chromatography of Food Dyes Jan Konig 28.04.2013 11:00am Chemistry 121‚ section DE Abstract: The second lab deals with the chromatography of food dyes which means you figure out what kind of compounds are used in a product like food color etc. by comparing the result to FD&C Food Dyes. You use six different food dyes‚ four food colors out of the store‚ two different Kool Aid powder and four different colors of candy like M&Ms you use for the chromatograph. At the end you try
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initial deposit into a bank account or CD (certificate of deposit) is given by A=P(1+r/n)^nt A is the amount of the return. P is the principal amount initially deposited. r is the annual interest rate (expressed as a decimal). n is the number of compound periods in one year. t is the number of years. Carry all calculations to six decimal places
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this is significant activity of the neurons to allow us to understand abnormality in the nerve that cause disorders. The objective of this study was to trigger a compound nerve action potentials (CAPs) and examine the effects of a stimulus voltage on a nerve and inspect their threshold‚ refractory period and also their velocity. Compound nerve action potentials (CAPs) are summed action potential of one nerve‚ one nerve consists of many neurons. We used the sciatic Lithobates pipiens nerve in this
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Al(NO3)3 b. ZnSO4 c. Ba(C2H3O2)2 d. NaHCO3 CH3COOH Calculate the percentage oxygen in the following compounds: a. Na2CO3 b. BaSO4 c. BaO d. Al2O3 e. H2SO4 Determine the empirical formula and the molecular formula of a compound containing 40.0% C‚ 6.7% H and 53.3% O. The molecular weight of the compound is 60.02g. Calculate the percentage composition of a compound containing 27.93g Fe‚ 24.05g S‚ and 48.00g O. How many grams of silver is present in 3.45g Ag2S? Balance
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