NETW310 Week 4 Lab Report To complete your Week 4 lab report‚ answer the questions below concerning the installation of the outside plant equipment. Create your report using the template starting on page 2 and submit it to the Week 4 Dropbox by the due date. Your Name NETW310‚ Professor’s Name Current Date Lab #4‚ Installation in the Outside Plant Lab Report Each answer is worth seven points. Use a red colored font for you answers. Place the answers below the questions. May
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13/22 Grade 59.09 out of a maximum of 100 (59%) Questions 1 through 4 are based on Lab Exercise #1: Time Lag. Marks: Record your answer from Lab Exercise #1‚ Step 1‚ Question 1. What time in 1 hours:minutes:seconds GMT did the P waves arrive? Choose one answer. a. 01:48:00 b. 01:49:00 c. 01:50:00 d. 01:51:00 Correct Marks for this submission: 1/1. 2 Marks: 1 Record your answer from Lab Exercise #1‚ Step 1‚ Question 2. What time in hours:minutes:seconds GMT did
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Heat of Neutralization Introduction: The purpose of this experiment was to measure‚ using a calorimeter‚ the energy changes accompanying neutralization reactions. In order to measure the amount of heat produced by a reaction‚ an instrument called a calorimeter was used. The calorimeter used in this experiment was somewhat rudimentary. It was constructed as shown in the following picture: After finding the heat capacity of the calorimeter‚ the student and partner neutralized two acids and
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Worked solutions to student book questions Chapter 2 Analysis by mass Q1. a b Why was the soup sample in Worked Example 2.1 heated to 110°C? Why was it necessary to weigh the sample four times? A1. a b The soup was heated above 100°C to evaporate water from the sample. By repeatedly heating the sample until the mass remained unchanged‚ the analyst could be sure that all the water had been removed. Q2. Some laboratories use microwave ovens in place of conventional ovens to
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Extraction (Ch # 07) Faraz Gohar Mr. Wayne Xie Chem 201 10/02/2012 Objectives : 1)To purify samples of organic compounds that are solids at room temperature. 2)To dissociate the impure sample in the minimum amount of an appropriate hot solvent Chemical Index : Naphthalene; mp 82 *C 1‚4-Dichlorobenzene; mp 56 *C 4-Chloroaniline; mp 68 - 71 *C; pKb 4.15 Ethyl 4-Aminobenzoate; mp 90 *C; pKb 4.92 Procedure : Partition
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technetium – 99 4. A 208 g sample of sodium-24 decays to 13.0 g of sodium-24 within 60.0 hrs. What is the half-life of this radioactive isotope? 208g/2 104g/2 52g/2 26g/2 13g…4 half lives have passed 60hrs/4 half lives = 15hrs half-life of sodium – 24 5. Thallium-208 has a half-life of 3.053 min. How long will it take for 120.0 g to decay to 7.50 g? a. Calculate how many half-lives have passed during the decay of the 120.0 g sample. 120g/2 60g/2 30g/2 15g/2 7.5g…4 half lives have
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hydroxide solution and allow the flasks to stand for 15 minutes. This releases the SO2 bound in complex compounds in the wine. 3. Fill a burette with standard iodine solution. Record the initial burette reading and the concentration of the solution. 4. To one flask‚ add about 10 mL of 2 M sulfuric acid and 1–2 mL of starch indicator solution. Immediately titrate the mixture with iodine solution. Record the burette reading the moment the mixture turns permanently blue (end point). 5. Repeat the above
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infrared‚ radio‚ ultraviolet E. gamma rays‚ ultraviolet‚ infrared‚ radio 3. Electromagnetic radiation of 500 nm wavelength lies in the ________ region of the spectrum. A. infrared B. visible C. ultraviolet D. X-ray E. γ-ray 4. The AM station KBOR plays your favorite music from the 20’s and 30’s at 1290 kHz. Find the wavelength of these waves. A. 4.30 × 10-2 m B. 0.144 m C. 6.94 m D. 232 m E. > 103 m 5. A photon has an energy of 5.53 × 10-17 J. What is
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1. Energetics si ygrene neht srucco egnahc yplahtne na fI dna )rH In an exothermic change energy is transferred from the system (chemicals) to the surroundings. The products have less energy than the reactants In an endothermic change‚ energy is transferred from the surroundings to the system (chemicals). The products have more energy than the reactants Enthalpy changes are normally quoted at standard conditions. Standard conditions are : • 1 atm pressure • 298 K (room temperature or 25oC) • Solutions
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C C H 2o H H C H H C C H H H C C H H 3o carbocation - more stable H C C H o H H C C H H C H H H C H H C C H H C C H H o H 2o H H 2 allylic carbocation more stable‚ the 1 allylic is delocalized over two carbons 4. Use a curved bouncing arrow to depict the alkyl shift that will likely occur for each carbocation below‚ and explain why the new carbocation is lower in potential energy than the original. H H3C C H3C CH3 H H C C H H3C C CH3 H3C H C CH3 2o H H
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