discharged 4. Sulphide: Colourless gas with a smell of rotten eggs (H2S); turns lead acetate paper black 1. Sodium nitroprusside test: WE + sodium nitroprusside 4 = purple / violet colour 2. Lead acetate test: WE + lead acetate 5 (aq) = black ppt 5. Nitrite: Pungent light brown gas 1. Starch-iodide test: WE + dil H2SO4 (or dil acetic acid); boil‚ then add solid KI + fresh starch sol = deep blue colouration Group II (conc H2SO4 group) – Cl(chloride)‚ Br- (bromide)‚ I- (iodide)‚ NO3- (nitrate)‚ CH3COO-
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So we‚ researchers‚ have come up to an idea that we may also used of Tilapia in preservation. Food preservation assures the consumers of a supply of foods that are out of season. As well as it prevents the waste of perishable foods those are in season. Surplus of preserved foods may be sold to augment family income. In line with this‚ Tilapia cultivators particularly will be encouraged raise more Tilapia fishes thus stimulating aquaculture development. Hence‚ the study‚ corned Tilapia will not only
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ARTICLE IN PRESS Microbiological Research 161 (2006) 93—101 www.elsevier.de/micres Changes in microbial and soil properties following amendment with treated and untreated olive mill wastewater Ali Mekki‚ Abdelhafidh Dhouib‚ Sami Sayadià Laboratoire des Bioprocedes‚Centre de Biotechnologie de Sfax‚ BP: ‘‘K’’ 3038 Sfax‚ Tunisie ´ ´ Received 8 June 2005; accepted 15 June 2005 KEYWORDS Microbial community; Olive mill wastewater; Polyphenols; Soil respiration Summary We investigated the
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soluble en agua y actúa como oxidante‚ y puede formar complejos ya sea unidentados‚ bidentados o tridentinos‚ y no forma compuestos que precipiten. SUMMARY Within the development of this issue we first find the description of the properties of nitrite‚ which is formed by a nitrogen atom and two O with a charge of -1‚ consequently has a bent geometry‚ within the useful properties identification we need is a water-soluble ion is colorless and can act as an oxidizer or reducer. Complex way by either
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Brian Edwards Professor Haley Nunn SOCL4273 11‚ January 2015 Chapter Review Assignment 6‚7‚8‚9 Week 1 Chapter 6 1. At about what periods in history did cocaine reach its first and second peaks of popularity‚ and when was amphetamine’s popularity at its highest? Cocaine -late 19th century and early 20th amphetamine- 1960s (Hart & Ksir‚ p. 125) 2. How did Mariani‚ Freud Halsted popularize the use of cocaine? Psychiatric use (Hart & Ksir‚ p. 126) 3. How are coca paste‚ freebase‚ crack‚ and ice
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The book Tips‚ Myths‚ and Tricks‚ A Physician’s Advice Health Information to Liberate Us From "Snake Oil" was written by Morton E. Tavel‚ M.D. In his introduction‚ Dr. Tavel said he wrote the book with the goal of cutting through the nonsense we as consumers are inundated with while providing us with useful tips that can improve our health and wellbeing. In my opinion‚ he comes pretty close to accomplishing his goal. I give this book‚ 3 out of 4 stars‚ not because I necessarily agree with everything
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Sulfides: Most sulfides are insoluble‚ except from alkali metals and ammonium ion. H. Acetates: All acetates are soluble‚ except silver acetate‚ which is slightly soluble. I. Silver salts: All silver salts are insoluble‚ except silver nitrate‚ silver nitrite‚ and silver perchlorate. Silver acetate and silver sulfate are slightly soluble. J. Carbonates: All carbonates are insoluble‚ except those of
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The purpose of this lab was to synthesize indigo and an azo dye and to determine how effective each dye was to dye different types of fabrics. 0.168g of 2-nitrobenzaldehyde was dissolved into acetone along with 25 drops of distilled water and NaOH to synthesize indigo. The solution was filtered‚ and the solid indigo was placed into the filter flask to reduce indigo to leucoindigo with 10mL of 3M NaOH. The flask was heated along with sodium dithionite and distilled water added to the flask. Afiber
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Naming Chemical Compounds General Information: Scientists all around the globe use a standard method for naming chemical compounds. The standards were set up by an international committee sponsored by the International Union of Pure and Applied Chemistry (IUPAC). Having this standard makes life easier for people who use these compounds everyday. It would be tough to set up any experiment if scientists everywhere used different names for the same compound. It would also make the lab a
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carbonate Na2SO3 b. sodium sulfite (NH4)3PO4 c. ammonium phosphate SnS2 d. tin(IV) sulfide HNO2 e. nitrous acid 2. Write the Stock names for the following compounds: magnesium perchlorate a. Mg(ClO4)2 iron(II) nitrate b. Fe(NO3)2 iron(III) nitrite c. Fe(NO2)3 cobalt(II) oxide d. CoO nitrogen(V) oxide e. dinitrogen pentoxide 3. 13 atoms a. How many atoms are represented by the formula Ca(HSO4)2? 4.0 mol b. How many moles of oxygen atoms are in a 0.50 mol sample of this compound? +6 c.
Free Oxygen Nitrogen Carbon dioxide