Introduction: Electrons are negatively charged subatomic particles found in all atoms. Electrons have particle-wave duality‚ meaning they exhibit characteristics of particles‚ and characteristics of waves. A wave is a periodic function‚ meaning that the function returns to the same value at regular intervals. Also‚ waves have crests and troughs‚ meaning there are repeated local maxima (crests) and minima (troughs). Waves also have a wavelength and frequency. The wavelength is the distance in
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Dana Erika Domingo III – St. Anne STERILIZATION OF WATER USING BLEACHING POWDER A CHEMISTRY INVESTIGATORY PROjECT ANSHUL KUMAR PANDEY XII B [THIS PROJECT LOOKS AT THE TECHNIQUE CALLED STERILIZATION OF WATER USING BLEACHING POWDER WHICH IS USED TO PURIFY WATER AND MAKES IT FIT FOR DRINKING.] INDEX I. Introduction -Need of Water -Purification of Water -Need for a stable purification technique II. Theory -History of Water purification -Bleaching powder
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SOLUTION PREPARATION AND STANDARDIZATION A.G.R. SUAREZ INSTITUTE OF BIOLOGY‚ COLLEGE OF SCIENCE UNIVERSITY OF THE PHILIPPINES‚ DILIMAN‚ QUEZON CITY 1101‚ PHILIPPINES DATE SUBMITTED: 5 DECEMBER 2012 DATE PERFORMED: 23 NOVEMBER 2012 INTRODUCTION All chemists must know how to prepare solutions of varying concentrations because many reactions in quantitative analysis take place in an aqueous medium. In this experiment‚ solutions were made using 2 methods. The first method used
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Rules for Naming and Writing Compounds I. Ionic Bonds • bonding between a metal and non-metal or the bond between a positive ion and a negative ion forming a binary compound. • end in the suffix "ide" • Or bonding between a metal and a complex ion. Steps in writing formulas: • • • • Use a periodic table of elements and of ions. Write the symbol and charge of the cation first (positive ion) Write the symbol and charge of the anion next (negative ion) Use criss-cross rule to balance for an electrically
Free Ion Sodium chloride Chlorine
t-Pentyl Chloride is a compound that is created through an SN1 nucleophilic substitution reaction in addition with Hydrogen Chloride in order to isolate the product. A variety of procedural techniques were utilized during the experiment including extraction‚ washing liquids‚ drying liquids‚ gravity filtration‚ and simple distillation. When a single solute or compound is transferred between two different solutes‚ it is known as extraction. Another technique that was utilized was washing‚ in which
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Al(SO4)3 Used in antiperspirant 6 Ammonium bromide NH4Br Used in photography 7 Ammonium chloride NH4Cl Used in photography 8 Ammonium carbonate (NH4)2CO3 Smelling salts 9 CaCO3 Limestone/chalk 10 Sodium chloride NaCl Table salt 11 Calcium chloride CaCl2 De-icer for snow on roads 12 Calcium hypochlorite Ca(ClO)2 Swimming pool disinfectant 13 Ammonium nitrate NH4NO3 Used in fertilizer 14 Ammonium phosphate Na3PO4 Used in fertilizer 15 Calcium oxide CaO Used to make plaster 16 Carbon dioxide CO2 Dry
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covalent? A. CsOH B. NF3 C. Sr(NO3)2 D. CaO E. LiF 5. The Lewis dot symbol for the chloride ion is A. B. C. D. E. 6. Which of these ionic solids would have the largest lattice energy? A. NaCl B. NaF C. CaBr2 D. CsI E. CaCl2 7. Which of these solids would have the highest melting point? A. NaF B. NaCl C. NaBr D. NaI 8. Which of these solids would have the lowest melting point? A. KI B. KBr C. KCl D. KF 9. Which of these atom is the most electronegative
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Assignment 1. Questions from chapters 1 and 2 of McMurry and Fay Question numbers are from the fourth edition. Chapter 1. Chemistry: Matter and Measurement 1 1.1 1.2 1.3 (a) Cd (b) Sb (a) silver (c) Am (c) rhenium (d) cesium (e) argon (f) arsenic (b) rhodium (a) Ti‚ metal (d) Sc‚ metal (b) Te‚ semimetal (e) At‚ semimetal (c) Se‚ nonmetal (f) Ar‚ nonmetal 1.4 1.5 The three Acoinage metals@ are copper (Cu)‚ silver (Ag)‚ and gold (Au). (a) The decimal point must be shifted
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63g/l 250ml 0.05M = 1.575g = 0.1N | Potassium hydrogen phthalate KH(C8H4O4)‚ FW = 204.23‚ Eq. =204g/l 250ml 0.1M = 5.105g = 0.1N | Potassiun hydrogen iodate KH(IO3)2‚ FW = 389.92‚ Eq. 73.07g/l 250ml 0.1M = 9.75g = 0.1N | Sodium carbonate Na2CO3‚ FW = 106‚ Eq. =53g/l 250ml 0.05M = 1.325g = 0.1N | Sodium hydroxide NaOH‚ FW = 40‚ Eq. = 40g/l 250ml 0.1M = 1.0g = 0.1N 1 liter 0.1M soln = 4g = 0.1N | Sodium oxalate Na2C2O4‚ FW = 134.00‚ Eq. =134g/l 250 0.1M = 3.35g = 0.1N | Sodium tetraborate
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Maalin Doshi 10/06/14 Danielle Vellucci Section 202 Experiment Title Introduction (Present tense – third person – active voice) *Maximum 1½ double-spaced pages The first sentence of your Introduction should include a concise statement of the goal of the experiment and the methods used. Background information: As relevant‚ incorporate key terms and concepts in an explanation of how a technique works on the molecular level‚ examples of relevant techniques outside of this class‚ comparison and contrast
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