following questions. (5) (i) What are these type of vacancy defects called? (ii) How is the density of a crystal affected by these defects? (iii) Name one ionic compound which can show this type of defect in the crystalline state (iv) How is the stoichiometry of the compound affected? 2 10. Analysis shows that a metal oxide has the empirical formula M0.96 O1.00. Calculate the percentage of M2+ and M3+ ions in this crystal? 2 OR In an ionic compound the anion (N¯) form cubic close type of packing
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What is the Ideal Gas Law in formula form? What is the value for the proportionality constant with units? Why are those units so important? b. PV = nRT c. C = PV / T 6. Write the balanced equations for CaCO3‚ BaCO3‚ Li2CO3‚ and Na2CO3 reactions with hydrochloric acid. 7. Calculate the molar mass of these same four metallic
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characterized using infrared spectroscopy. Materials Used: Paraffin test tube 50-mL Erlenmeyer flask cork microspatula sand bath Pasteur pipettes Rubber bulbs sand bath clamp Hickman still Pasteur pipettes with bent ends Kim-wipes vial Reagents and Properties: Formula Weight Substances Moles Used Mole Ratio Melting Point °C Quantity g/mol Acetic Acid 60.05 2 mL 0.0349 1 to 1 Isopentyl acetate 130.19 product N/A 1 to 1 Isopentyl alcohol Conc
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Topics and Concepts Covered Topics covered are suggested by the College Board. The order of presentation is strongly recommended by the National Mathematics and Science Initiative (NMSI) UNIT 1 Foundations / Nomenclature / Stoichiometry (Summer Work and Introductory Review) these topics are all covered in College Prep and Honors Chem Chapter 1 Introduction: Matter and Measurement 1.1 The Study of Chemistry The Atomic and Molecular Perspective of Chemistry 1
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COE CHEMONE Reviewer for CHEMONE Finals Rules for Counting Significant Figures 1. Nonzero integers. Nonzero integers always count as significant figures. 2. Zeros. There are three classes of zeros: a. Leading zeros are zeros that precede all the nonzero digits. These do not count as significant figures. In the number 0.0025‚ the three zeros simply indicate the position of the decimal point. This number has only two significant figures. Note that the number 1.00 _ 102 above is written in exponential
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flask 25-mL Erlenmeyer flask filter paper rubber bulb support stand sand bath ice (for ice bath) melting point capillary tubes 100 µL micropipet Pasteur pipettes‚ plastic glass Pasteur pipettes glass stirring rod Hirsch funnel clamp watch glass Reagents and Properties: Substances Formula Weight‚ g/mol Amount Used Moles Used Mole Ratio Melting Point °C Boiling Point °C Density g/mL Acetone
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Date Performed: January 10 & 15‚ 2013 Spectrophotometric Determination of the Equilibrium Constant of a Reaction R.J.V. Ortega and J.C.V. Gatdula Institute of Chemistry‚ College of Science University of the Philippines‚ Diliman‚ Quezon City‚ Philippines Received January 22‚ 2013 ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ABSTRACT -------------------------------------------------
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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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bases and rotovapped. DEET was synthesized from the experiment as NMR and IR data show strong peaks comparable to the literature values expected for DEET. The percent yield of the product at 56.1% could have been higher by adding more of the limiting reagent toluic acid. Introduction: In this experiment DEET is synthesized from m-toluic acid that has undergone a nucleophilic acyl substitution with thionyl chloride. The nucleophilic acyl substitution proceeds by having the carboxylic acid on m-toluic
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Heating 2NaHCO3→Na2CO3+CO2+H2O a) Experimental results i) Trial 1 Mass of NaHCO3 | 0.3g | Temperature of hot plate | 400 ˚C | Time interval | 10 min. | Mass of mini beaker and product (Na2CO3) | 31.3g | Mass of mini beaker | 31.21g | Final mass of Na2CO3 | 0.09g | ii) Trial 2 Mass of NaHCO3 | 0.3g | Temperature of hot plate | 400 ˚C | Time interval | 10 min. | Mass of mini beaker and product (Na2CO3) | 31.52g | Mass of mini beaker | 31.31g | Final mass of Na2CO3 | 0.21g |
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