percent composition 2. Learn how to get the percent using oxidation reduction and double reactions 3. To become more familiar with the use titration techniques 4. To learn how to get the salt out of an quimical Background: To develop and utilize procedures to determine the percent composition‚ of ZnCI2. As well titrating with NaOH solution. After all the experiment we got hta salt witch we weighted and we got our results. Experiment reactions: .33w of Zn(OH)2 x moles Zn(OH)2/m. moles Zn(OH2)
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atoms are contained in 2.3g of C2H5OH. [2] 2.3 x 1023 Hydrogen Atoms - 2.3g * 1mol/6.06g * 6.02 1023 / 1mol 2. An oxide of sulfur contains 60% by mass of oxygen. Determine the empirical formula of the compound. [2] 3. Ethylene glycol‚ the substance used in automobile antifreeze‚ is composed of 38.7 g carbon‚ 9.7 g hydrogen‚ and 51.6 g oxygen. a. What is the empirical formula of the compound? [2] b. If its molar mass is 62.1 g/mol‚ what is the
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25 posts - 16 authors Figure 2: Preparation of nitroguanidine from guanidine nitrate. ... 200g sulphamic acid and 124g urea were mixed in a shallow Pyrex bowl and ... [PDF] Instructions for HACH HR Nitrate Analysis www.d.umn.edu/~dlong/.../Instruction-Nitrate-HR-TNT836.pdf Nitrate. Nitrate. Page 5 of 6. Summary of method. Nitrate ions in solutions containing sulfuric and phosphoric acids react with 2‚6-dimethylphenol to form 4-nitro-2 ... chemical denitrification of
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bonds are bonds that don’t give or take any electrons. In stead they share the elctrons 50) Which of these compounds contain elements that do not follow the octet rule? Explain. a) NF3: 5 + (7*3) = 26 b) PCl2F3: 5 + (7*2) + (7*3) = 40 c) SF4: 6 + (7 *4) = 24 d) SCl2: 6 + (7*2) = 20 The answer is “d” because it does not have eight valence electrons. 64) Explain why each electron structure is incorrect. Replace each structure with one that is more acceptable. a) It is incorrect because
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1.1 Chemistry A. What Is Chemistry? * Because living and non-living things are made of matter‚ chemistry affects all aspects of life and most natural events. * Matter- is anything that has mass and occupies space. * Chemistry- is the study of the composition of matter and the changes that matter undergoes. B. Areas of Study * Five traditional areas of study are organic chemistry‚ inorganic chemistry‚ biochemistry‚ analytical chemistry‚ and physical chemistry. * Organic
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name of metal first. 2. Name of non-metal second‚ BUT change ending to IDE. I.E. NaCl Sodium Chloride IONIC COMPOUND WITH MULTIVALENT 1. Full name of the metal‚ write in the Roman numeral to indicate the valence in brackets. 3. Name of non-metal second‚ BUT change ending to IDE. I.E. FeCl3 Iron (III) chloride BINARY COVALENT COMPOUNDS Two nonmetals 1. Name each element. (the element furthest to the left on the periodic table is written first). 2. End the last element
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eroxodisulphate+and+potassium+Iodide&pbx=1&oq=An+investigation+into+the+kinetics+of+the+reaction+between+potassium+peroxodisulphate+and+potassium+Iodide&aq=f&aqi=&aql=1&gs_sm=e&gs_upl=4649l5023l3l5663l2l0l0l0l0l0l0l0ll0l0&rlz=1R2ADRA_enGB386&bav=on.2‚or.r_gc.r_pw.&fp=4cbda8eccdfde5e1&biw=1280&bih=600 http://www.chemistry-react.org/go/Faq/FaqByTopic.html?category=47 Investigating the kinetics of the reaction between iodide ions and peroxodisulphate (VI) ions - http://www.avogadro.co.uk/kinetics/peroxodisulphate
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CHEM 2018 Organic Lab Part 2 Experiment 7: Diethyl n- Butylmalonate Lab Partner: Reference: Williamson K.L.‚ & Masters
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• A sharp pin • Cellophane tape • A pencil • Paper Pre-Lab Questions: 1. The balloon is being tested and analyzed 2. We are using sight and touch 3. Independent= petroleum jelly Dependent= the balloon 4. Controls= Petroleum jelly Constant= the cellophane tape and a sharp pin Pre-Lab Questions for 2nd part of Lab: 1. The balloon is being tested and analyzed 2. We used sight as our scientific skills 3. Independent: the pin Dependent: the balloon 4. Control(s)= cellophane tape
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9/19/2012 Experiment #1-Density Aim: Learn how the process of distillation occurs. Observe how distillation separates alcohol from wine. Method: Distillation is based on the fact that the matter can exist in three phases - - solid‚ liquid and gas. As the temperature of a pure substance is increased‚ it passes through these phases‚ making a transition at a specific temperature from solid to liquid (melting point--mp) and then at a higher temperature from liquid to gas (boiling point--bp). Distillation
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