containing silver ions is placed on a piece of copper metal? What will happen if a drop of solution containing copper ions is placed on a piece of silver metal? Chlorine and bromine are both non-metals (both negative in compounds) and both are used for disinfecting and bleaching. What will happen if chlorine is added to a solution containing bromide ions? What will happen if bromine is added to a solution containing chloride ions? Permanganate ions (MnO4-) react with iron(II) ions (Fe2+) in acid
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reaction between hexacyanoferrate (III) and sodium borohydride‚ resulting in the formation of hexacyanoferrate (II) ions and dihydrogen borate ions. The redox reaction is depicted as: [BH4] - + 8[Fe (CN) 6] -3 + 3H2O H2BO3 - + 8[Fe (CN) 6] -4+ 8H+ The reaction can even proceed without a catalyst‚ but it has been reported that it is a slow reaction‚ which follows zero-order kinetics. The progress of the reduction reaction of Potassium hexacyanoferrate (III) to Potassium hexacyanoferrate (II)
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While it is easy to make comparisons between the pupil of the eye and the f-stop of a camera or between the retina of the eye and photographic film‚ once we get past the basic similarities of the optics of the two systems‚ comparisons begin to rapidly break down. The eye is not only much more complex than a camera and its film‚ but the two imaging devices function by different chemical mechanisms. The photographer (or the automatic exposure system of the camera) regulates the f-stop opening and time
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1. Disposing of Waste - Teachers should be aware of the appropriate method of disposal for any chemical used in the school laboratory. When in doubt‚ refer to the MSDS‚ a disposal manual‚ or the source of the chemical. a. Classification of Hazardous Waste The Environmental Protection Agency classifies wastes as: Ignitable: has a flash point below 140°C‚ is an oxidizer‚ or is an ignitable compressed gas. Corrosive: has a pH equal to or below 2.0 or a pH equal to or greater than 12.5. Reactive:
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The Causes and Effects of Radiation A Research Paper Presented to Mr. Ronel Ramos Alcasarin St. Catherine Academy In Partial Fulfillment Of the Requirements for ENGLISH IV By: Hazel Dianne S. Cagalawan March 2013 The Research Paper attaches hereto‚ entitled The Cause and Effects of Radiation Prepared and Submitted by: Hazel Dianne S. Cagalawan In Partial fulfillment Of the Requirements in ENGLISH IV is hereby accepted: Mr. Ronel Ramos Alcasarin
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hydrogen bonds with three or four other water molecules. Consequently‚ the covalent bonds in water molecules often break automatically. When this happens‚ hydrogen leaves the electron in the rest of the water molecule and conduct as a positively charged ion. The water molecule that retained the electrons of the covalent bond is
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red solutions that will lead to a possible identity of each red solution. Starting with red solution #1‚ we are able to conclude that there are no nanoparticles in this solution and that is a molecular compound due to the fact that when potassium iodide was added‚ there was no color change and no precipitate formation to indicate that a chemical reaction had happened. Having no color change occur when an ionic compound is added to a solution means that the solution is
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moles of B are present at 10 s? A) 0.011 B) 0.220 C) 0.110 D) 0.014 E) 10) How many moles of B are present at 30 s? A) B) 0.15 C) 0.073 D) E) 0.051 The peroxydisulfate ion reacts with the iodide ion in aqueous solution via the reaction: An aqueous solution containing 0.050 M of ion and 0.072 M of is prepared‚ and the progress of the reaction followed by measuring []. The data obtained is given in the table below. 11) The average rate of
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Hydrogen Peroxide & Inorganic Peroxy Compounds Hydrogen Peroxide Hydrogen peroxide (H2O2) is the simplest peroxide (a compound with an oxygen-oxygen single bond). It is also a strong oxidizer. Hydrogen peroxide is a clear liquid‚ slightly more viscous than water. In dilute solution‚ it appears colorless. Reactions Decomposition Hydrogen peroxide decomposes exothermically into water and oxygen gas spontaneously: 2 H2O2 → 2 H2O + O2 This process is thermodynamically favorable. It has
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allowing the silver ion and chloride ion to form silver chloride. The overall and net ionic equations for the reaction are as follows: Overall Equation AgNO(aq) + XCl(aq) AgCl(s) + XNO3(aq) Net Ionic Equation Ag+(aq) + Cl-(aq) AgCl(s) Precipitation gravimetry for this experiment was performed by using silver nitrate as the precipitating reagent then digesting the newly formed silver chloride sample in a solution containing ions. Through heating and the high concentration of the ions‚ the silver
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