Experiment #1 Date: September 13‚ 2011 Title: Diffusion in Gases I Aim: To observe the diffusion of bromine Apparatus and Materials: Glass tube‚ bromine‚ fume chamber Diagram: Procedure: -Liquid bromine was placed in a jar and covered Observations: When first placed in the jar the original color of bromine was red-brown. As it began to diffuse its color changed from dark brown to a lighter brown until it becomes a yellow-like orange color. As it was diffusing liquid bromine changes its state
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What Makes Us Human What makes us human? What is it that we are made up of? I know a human has a body made up of two legs‚ two arms‚ two eyes‚ a nose‚ a mouth‚ and two ears‚ but that is not what makes us human. Human beings are made up of feelings‚ the ability to think‚ communication‚ and many other elements. Feelings show the way we feel between each other and is the reason for our survival. The ability to think is so important because just because we can think doesn’t always mean we do think.
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Ethical Challenges in Business: A Historical Event worth Examination The movie Erin Brockovich is based on actual events involving corporate business knowingly endangering the health of local residents and the environment. This factual event is a great example of capitalism on steroids with no empathy for who are what is destroyed on their path for wealth. The events that unfold show the degenerative break down of ethical values through the business format of Pacific Gas and Electric. PG&E
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LAB EXERCISE: Diffusion and Osmosis Laboratory Objectives After completing this lab topic‚ you should be able to: 1. Describe the mechanism of diffusion at the molecular level. 2. List several factors that influence the rate of diffusion. 3. Explain why diffusion is important to cells. 4. Describe a selectively permeable membrane‚ and explain its role in osmosis. 5. Define hypotonic‚ hypertonic‚ and isotonic in terms of relative concentrations of osmotically active substances. 6. Discuss
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Physioex 9.0 Review Sheet Exercise 1 Cell Transport Mechanisms and Permeability Name Lab Time/Date ___ Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Size of material and concentration 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? The molecules were too large to pass through. This is what I predicted
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Influence of Religion on Developing Societies David Lyons Jr. HIS 103 World Civilizations 1 Instructor: Justin Lawrence June 18th‚ 2012 Introduction Religion has always had some influence on civilization. From the past to the present it has shaped the way civilizations interact‚ communicate and even fight wars. Religion started out with the different complex societies instilling their rules upon families and then allowing those kinds of families to organize into local government systems
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I read the article‚ Women Have Not Adapted to Casual Sex‚ Research Shows. The article was about how even though women now have more freedom to have casual sex‚ they don’t seem to enjoy it as much as men do. I think that the information in this article was kind of credible. They used an internet survey to ask 1‚743 men and women who had previously had one night stands about how they had felt about it. I think that they could have added into the survey how old the subjects were and what (if any) minority
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Simple Diffusion Activity 1: Simulating Simple diffusion 1. What is the molecular weight of Na+? 22.99 or 23 2. What is the molecular weight of Cl-? 35.45 3. Which MWCO dialysis membranes allowed both of these ions through?50‚100‚ 200 4. Which materials diffused from the left beaker to the right beaker? Urea‚ NaCl and glucose diffused 5. Which did not? Why? Albumin was too large to diffuse into the right beaker. Activity 2: Simulating Dialysis 6. What happens to the urea concentration
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Stephanie Sanchez POSC 201 2/28/13 Term Paper #1 Individual ’s rights and freedom is all based upon the United States Constitution‚ and has caused much of the debates in our country throughout time. With much of the debate on the proposal ’s of gun control in our nation‚ we have to keep inconsideration of the U.S. Constitutional rights we have as people. Should we enact the proposal ’s President Barack Obama stated on gun control‚ or keep the remaining right ’s of individuals based upon the
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Osmosis and Diffusion During the past few weeks in my Ag Biology class we have been learning about and reviewing both osmosis and diffusion. We did two different labs‚ one on osmosis; the other on diffusion. The first lab we did was our diffusion lab. We learned that diffusion is moving something from an area of high concentration to a low concentration. We were showed that Mio and other flavor drops perform diffusion when put in water as an example. For the lab part we put a mixture of starch
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