TITLE Basic Technologies of Handling Chemicals and Laboratory Apparatus INTRODUCTION Density is defined as mass per unit volume. The commonly used unit to indicate the density of water is (g/cm3). Water never has an absolute density because its density varies with temperature. Water has its maximum density of 1 g/cm3 at 4oC. When the temperature changes from either greater or less than 4oC‚ the density will become less than 1g/cm3 only when it is pure water. Other factors that
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Manual versus Computerized Accounting Ever since Lucas Pacioli wrote about and spread the knowledge of double entry accounting in his “Summa di Arithemetica” in 1494‚ modern manual accounting was born (Hendrickson‚ 2007)‚ though manual accounting has existed in many forms since ancient times. In contrast‚ computerized accounting systems are a more modern invention‚ as the first computer was invented between 1943 and 1946 (“Great Events in Accounting & Business History”‚ (n.d.)) and Arthur
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Paper #2: Process Description Manual Transmission 10/08/2014 Introduction A large portion of the United States population find that driving a car with a manual transmission‚ or stick shift as it is commonly referred to‚ is incredibly difficult. However‚ all it actually takes is rigorous practice and absolute dedication before driving a stick shift becomes a habit. The main purpose of the manual transmission is to allow a vehicle to travel at high speeds with lower revolutions‚ but still have
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Outline Manual Transmission Cars Purpose - To explain to the class about manual transmission cars and how to drive one. Central Idea – Driving a manual transmission car is very different from driving an automatic transmission car I. Introduction Today about 6 million people drive a car in the United States‚ but the percentage of those people that drive a manual transmission is significantly less than those who drive automatic. In every country in Europe
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Manual vs Automatic Transmissions Why are cars with manual transmissions so popular? Also‚ what are some of the differences and some of the advantages to driving a car with a manual transmission? They are more difficult to drive than a car with an automatic in it. They also require certain motor skills that you don’t need with an automatic. One could also choose an automatic that is easier to drive and would make your drive in rush hour traffic more comfortable. People who have driven cars
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Experiment title: Le Chatelier’s Principle Date conducted: 2/9/2012 Experiment purpose: To determine the effect of a change on a system at equilibrium and to correlate the observed responses with Le Chatelier’s principle. Experiment Chemical list: Student Provided 1 Tap water 1 Toothpicks 1 Distilled water 1 Crushed ice 2 Coffee spoons 1 Rubber bands 2 Beaker‚ 50 mL‚ plastic 1 Magnifier‚ dual 1 Pencil‚ marking 1 Thermometer-in-cardboard-tube 1 Well-Plate-24 In the Experiment
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Chemical Gas Tests Procedure Part 1: Hydrogen and Manganese Dioxide 1. Inserted 4mL of hydrogen into a test tube 2. Scooped a little amount of manganese dioxide on the end of a wooden splint 3. Allowed the tip of the splint to flame using the Bunsen Burner 4. Allowed the reaction to proceed for a total of 15 seconds. 5. Placed the glowing splint into the test tube 6. Recorded the results Part 2: Magnesium strip and Hydrochloric acid 1. Poured 3mL of hydrochloric acid into a test
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BIOL 1020 Lab Assignment: Virtual Microscopy Start by re-saving this file as follows: lab_surname_virtualmicroscopy.rtf‚ substituting your own surname. Type your responses to the questions below where indicated. Remember to save your work frequently. Viewing Magnification‚ Field of View‚ and Specimen Size 1. On the UD Virtual Compound Microscope‚ examine the onion root tip slide at 400X viewing magnification. Ensure that the image is centred. What is the approximate size of an onion root
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Review Sheet 1 Results 1. Describe two variables that affect the rate of diffusion. Your answer: Two variables that affect the rate of diffusion are the MWCO membrane and the solute concentration. Increasing the membrane size and solute concentration will also increase the average diffusion rate. Decreasing the membrane size and solute concentration will reduce diffusion rates and can even prevent all diffusion. 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane
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to inspire his work. The use of an instruction manual implies that the user must build their own furniture‚ and often times the furniture one must build is low quality. This translates the image of a low-income household from the poem; a futon and a low table‚ assumingly a coffee table‚ being used as a dining room table gives the reader an image of a household that has not been fully or properly furnished. The work also resembles instruction manuals that come with many Ikea products‚ even going so
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