2/08/2011 Abstract: Using the chemical equation we can study the reaction taking place between magnesium metal and sulfuric acid in solution. The = for the reaction of sulfuric acid and magnesium metal. Introduction This report demonstrates calorimetry‚ or the technique of measuring heat effects in the surroundings. In order to make sure that there is no temperature change‚ or that it is an isothermal heat transfer‚ it is kept at a similar temperature in an ice bath. By knowing the change in volume
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Chapter 3 Test 3.1 and 3.3 Completion Complete each sentence or statement. 1. The state of matter that exists only at extremely low temperatures is called a Bose-Einstein ____________________. 2. When water boils‚ some of its molecules have enough _________________________ to overcome the attraction of neighboring molecules. 3. The ____________________ theory of matter states that all particles of matter are in constant motion. 4. During vaporization‚ a substance changes from
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06.03 Calorimetry: Lab Report Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Part I The Dissolving of Solid Sodium Hydroxide in Water Procedure: 1. Measure out approximately 200 mL of distilled water and pour it into the calorimeter. Stir carefully with a thermometer until a constant temperature is reached. Record the volume of water and the constant initial temperature of the water on your data table.
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Hypothesis: I believe that alcoholic compounds with bigger relative formula mass will release more energy in combustion reaction than the less alcoholic hydrocarbons compounds. Equipment: Different types of alcohols in spirit burner (CH4‚ C2H6‚ C3H8‚ C4H10‚ C5H12)‚ Thermometer‚ water‚ beaker‚ scale‚ measuring cylinder‚ tripods‚ clamp‚ gauze‚ heat mat‚ lighter or matches. Hazard: Most of alcohol we using are flammable‚ irritant‚ toxic and harmful. 1 provide spirit burners which have removable
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Differential Scanning Calorimetry (DSC) was carried out to investigate the thermodynamic properties of CXB‚ different carriers‚ PMs and SD preparations. Their thermograms are represented in Figures (9-14). The thermogram of CXB in Figure (9) was characterized by single‚ sharp endothermic peak at 165±0.56°C which represents the melting point of CXB. Some researchers reported that CXB melting point ranging from 160.79–164.64°C (127)‚ and Paradkar A. et al. (2002) reported that sharp endotherm corresponding
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Procedure 1: Energy of a cashew. Recorded Data: | Trial 1 | Trial 2 | Trial 3 | Trial 4 | Trial 5 | Mass of cashew (in grams) | 1.00 g (± 0.01 g) | 1.00 g (± 0.01 g) | 1.70 g (± 0.01 g) | 1.40 g (± 0.01 g) | 1.50 g (± 0.01 g) | Mass of remaining material (in grams) | 0.60 g (± 0.01 g) | 0.30 g (± 0.01 g) | 0.30 g (± 0.01 g) | 0.50 g (± 0.01 g) | 0.80 g (± 0.01 g) | Mass of cashew that burned
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1. Clean‚ rinse‚ and fill a buret with NaOH solution just as you did in last week’s experiment. Record the molarity of the NaOH and the initial NaOH volume reading from the buret (+0.02 mL). 2. Weigh an antacid table in a weighing boat and record the mass (+0.01 g). Transfer the tablet to a clean mortar and crush the tablet into a fine powder using the pestle. 3. Weigh about 0.2 grams (+0.01 g) of the ground up tablet powder and transfer it to a clean 250 mL Erlenmeyer flask. 4. Transfer
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In this experiment‚ we used acquired observational data to develop an activity series describing the relative reactivity of the metals being tested. The elements within a periodic table often show different trends in physical and chemical properties depending on the period or group they are apart of. In a periodic table‚ elements are arranged by increasing atomic number in horizontal rows called periods. The atomic numbers represent the number of protons in each element. The periodic table is also
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Aim: The aim of this experiment is to convert copper metal through a series of intermediate copper compounds back into copper metal. By weighing the copper at the beginning and at the end of the experiment the percentage yield can be determined. Method: The experiment was carried out as outlined in the practical manual. Results: Table: showing masses: Mass copper wire 0.2510 Mass crucible 28.9257 Mass watch glass 19.6213 Mass watch glass + copper 19.7890 Mass copper
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To begin the experiment‚ the unknown needs to be determined as an acid or a base by using litmus paper or a pH strip. For the rest of the experiment‚ if the substance is being handled‚ gloves and goggles must be worn. Use a clean and dry Erlenmeyer flask and weigh it. Then‚ some of the unknown will be measured and poured into the flask. Also way the flask and the unknown. Add distilled water and phenol saline to the flask. Set that aside to prepare the biuret. Choose the substance that will be used
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