Chemical Reactions and their Classifications 26 October 2012 Abstract: Ordinary laboratory ware was used to determine how many of what type of chemical reactions occurred. This yielded three decomposition reactions‚ four substitution reactions‚ and three metathesis reactions. Introduction There are many different types of chemical reactions in the study of chemistry; A composition reaction (also known as synthesis) is defined as the reaction that occurs when two single compounds combine in
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Title: Redox Reaction Introduction: Some of the most important chemical reactions are Redox reactions. They are also known as oxidation-reduction reactions. This reaction passes one or more electrons from one species to another. The species that loses electrons are being oxidized while the species that gains electrons are reduced. The reaction occurs simultaneously. Numbers are given to each element in a chemical reaction to help us find out which element is oxidized and which is
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2032-Ch09-homework MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) In water‚ a substance that ionizes completely in solution is called a ________. A) weak electrolyte B) semiconductor C) strong electrolyte D) nonelectrolyte E) nonconductor 2) A solution with the same osmotic pressure as the blood is ________. A) isotonic to the blood B) molar to the blood C) hypotonic to the blood D) nontonic to the blood E) hypertonic to the
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the paltinum pin electrodes stabilize. 5. We get the volume of the KF reagent dispensed in the kettle and the moisture content of the sample on the display of the machine. Repeat the steps for two more same samples. 6. Perform the same procedure for KCL sample(approx 90mg). Calculations: The analitical moisture content is calculated from the data using the relation‚ % moisture = 100*S*(KF-B-L/1000)/W; Where‚ S= strength of KF reagent (mg/ml) W = wt. of sample (mg)
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Purpose/Objective: To observe the colors produced when elements are put into a flame and to prove when electrons jump down from higher layers they release energy in the form of light. Materials: CoCl2 Na2SO4 CaCl2 KCl SrCl2 CuCl2 LiCl Unknown A Unknown B Distilled H2O Q-tips Beaker Bunsen Burner Spectroscope Spot Plate Procedure: 1. Light the Bunsen Burner. 2. Fill a beaker with water. 3. Get the spot plate with all the known and unknown salts
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Laboratory Report on the Reaction of Flames Towards Medals  Introduction The purpose of the flame lab was to identify a set of flame-test color standards for selected metal ions‚ relate the colors of a flame test to the behavior of excited electrons in a metal ion‚ observe spectral lines using diffraction grating‚ and to identify an unknown metal ion by using a flame test. My hypothesis for the lab was that most of the flames when sprayed with a solution will be a orange-red color. The
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The mass of copper and zinc Materials 1. Copper metal and copper ions 2. Zinc metal and zinc ions 3. 2 Filter papers 4. Potassium Chloride (KCl) 5. Voltmeter (+- 0.1) 6. Goggles 7. Lab coat 8. Two Beakers (100ml each one) Method * First‚ put the filter paper with some Potassium Chloride (KCl) until it gets wet. * Then‚ separate the two beakers enough and then put the filter paper as salt bridge. This salt bridge allows electrons to flow between the
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of daily living. Even minimal activity was associated with moderately severe dyspnea and exertional chest pain‚ which was relieved by rest. A.O. also exhibited marked pedal edema bilaterally. She is being treated with digitalis‚ furosemide (Lasix)‚ KCl‚ and sublingual nitroglycerin. Discussion Questions 1. Which type of heart failure (left or right sided) is usually associated with dyspnea? What other clinical findings are likely to be present with left-sided heart failure? 2. What compensatory
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all electrons transfers. 1.Mg + HCl ( MgCl2 + H2 2.Fe + V2O3 ( Fe2O3 + VO 3.KMnO4 + KNO2 + H2SO4 ( MnSO4 + H2O + KNO3 + K2SO4 4.K2Cr2O7 + SnCl2 + HCl ( CrCl3 + SnCl4 + KCl + H2O 5.KMnO4 + NaCl + H2SO4 ( Cl2 + K2SO4 + MnSO4 + H2O + Na2SO4 6.K2Cr2O7 + H2O + S ( SO2 + KOH + Cr2O3 7.KClO3 + C12H22O11 ( KCl + H2O + CO2 8.H2C2O4 + K2MnO4 ( CO2 + K2O + Mn2O3 + H2O 9.Mn(NO3) 2 + NaBiO3 + HNO3 ( HMnO4 + Bi(NO3) 3 + NaNO3 + H2O 10.H2C2O4 + KMnO4 ( CO2 + K2O + Mn2O3 + H2O
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The Effect of Chemicals on Fire In this lab we got to see the effect of chemicals on fire. We got to. See the flames change to different colors. The size of the colorful flame depended on how the Bunsen burner was turned on. I was sick when we were supposed to have the lab read‚ but I got it read the next day before class. During the lab I made sure to have the correct attired on: my goggles and apron. Ow ill go ahead and tell you five good safety precaution tips. One‚ never leave a lit
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