Introduction 1.1 Aim and Assumptions: The aim of this experiment is to observe the rate of diffusion of diethyl ether vapour into stagnant air‚ and then determine the diffusivity. An error analysis of this calculation also had to be carried out. The following assumptions made were: * Diethyl Ether is an ideal gas * Partial pressure at the top of the tube was equal to zero * Mass transfer resistance between the liquid surface at the bottom of the tube is insufficient‚ compared with the resistance
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the artificial cells to the diffusion rate using the phenolphthalein-NaOH agar and the HCl solution. Lab #2 was a model of diffusion and osmosis‚ in which we filled the model cells with different solutions and determined the rate of diffusion. In lab #3‚ the results demonstrated the interactions between selectively permeable membranes‚ water‚ and solutes and how they are important in cellular and organismal functions. In lab #1‚ the results showed the diffusion rate between the certain time period of
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The code of Hammurabi of Mesopotamia dates back to 1754 BC when the 6th Babylonian King Hammurabi‚ made judgement on civil‚ family‚ inheritance‚ crime etc. and many other decisions which were written down in order to enforce laws and rules as to how people should behave and conduct themselves. The 282 laws influenced that area for thousands of years and have even drifted into our own into parts of our very own existing legal codes. In fact Hammurabi is edged into the Supreme Court building in Washington
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Chapter 3 Test-Mesopotamia and the Fertile Crescent Please DO NOT write on this test Directions: Circle the letter of the best answer that fits each question. Read each question carefully‚ some choices might be similar. 1. What does Mesopotamia mean? A. Between two ponds B. Between two rivers C. Between two lakes D. Between two oceans 2. What is the name of the two rivers that Mesopotamia and the Fertile Crescent are located between? A. Nile and Jordan B. Mediterranean and Red C. Tigris and
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Examining Diffusion and Osmosis Introduction: Purpose: 1. To simulate and observe the diffusion of solutes and the osmosis of water through a semipermeable membrane through color change and sugar tests. 2. To speculate osmosis occurring in dialysis bags and potato cores by comparing percentage change in masses. Background information: Molecules are always in random‚ constant movement due to their kinetic energy. This causes the molecules of a cell to move around and bump into each other
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Valued qualities of Kings in ancient Egypt and Mesopotamia 5000 years ago‚ as people discovered or invented more and more tools‚ agriculture replaced hunting and gathering became the main path food comes from. Because of the higher productivity agriculture has and agriculture’s need of settlement‚ people settled down from then on and cities came into being at that time‚ which happened at Mesopotamia and Ancient Egypt at first. As the population grew up in these cities‚ people met with the need
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Sylvester Rimando Geography 2 September 19 2012 Cultural Diffusion: Sushi Sushi is one example of cultural diffusion in which went on to expand on a global scale from a native treat of Japan into an international delicacy. To scope out on how sushi became an international sensation‚ there are 4 factors that identify the chronicles of its origins and through an expansion of this treat internationally. These 4 factors are: the hearth (originating from) ‚
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PhysioEx™ Lab: Cell Transport Mechanisms and Permeability Activity 1: Simple Diffusion Chart 1 Dialysis Results (Average Diffusion rate in mM/min) Solute Membrane (MWCO) 20 50 100 200 NaCl (—) 0.0150 0.0150 0.0150 Urea (—) (—) 0.0094 0.0094 Albumin (—) (—) (—) (—) Glucose (—) (—) (—) 0.0040 1) Which solute(s) were able to diffuse into the right beaker from the left? NaCl‚ Urea‚ Glucose 2) Which solute(s) did not diffuse? Albumin 3) If the solution in the left beaker
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artifacts of ancient Mesopotamia‚ that were more than just a work of art‚ but a precious historical document were the Stele of Hammurabi and the Stele of Naram-Sin. Mesopotamia was an ancient region east of the Mediterranean‚ bordered in the southeast by the Arabian Peninsula and northeast by the Zagros mountains. Which is now modern day Iraq‚ as well as parts
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Egypt‚ in terms of democracy‚ is limited. Superficially it contains all the basic requirements of a democracy: a parliament‚ a president and regular elections. However‚ "elections do not a democracy make." In Egypt’s sordid past it has been occupied‚ reoccupied and moreover controlled by external forces unique in the Arab world. Strong nationalism has led Egypt through social experiments that failed. Imitation has brought about a parliamentary monarchy cut short by a coup. In the end‚ "Rule from
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