Name: Marion Paxton Diffusion Lab Introduction: In this lab you will observe the diffusion of a substance across a semi permeable membrane. Iodine is a known indicator for starch. An indicator is a substance that chances color in the presence of the substance it indicates. Watch as your teacher demonstrates how iodine changes in the presence of starch. **Prelab Observations: Describe what happened when iodine came into contact with starch. The cornstarch turned blue-black Procedure:
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METHODOLOGY After formulating the hypothesis that the molecular weight affects the rate of diffusion‚ three different kinds of substances --potassium permanganate (KMNO4)‚ potassium dichromate (K2Cr2O7) and methylene blue (C16H18N3SCl)‚ were used to test the validity of the hypothesis. Potassium permanganate is an inorganic chemical compound which is in violet liquid form; potassium dichromate is an orange inorganic chemical reagent and methylene blue is a chemical compound commonly used for staining
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potential to improve the • What is health information technology? • Quality and health information technology • Current status of health information technology • Efforts to encourage faster diffusion quality‚ safety‚ and efficiency of health care. Diffusion of IT in health care is generally low (varying‚ however‚ with the application and setting) but surveys indicate that providers plan to increase their investments. Drivers of investment in IT include the promise
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Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration. Because of the selective permeability of the membrane only water and other very small particles (iodine) can be diffused through simple diffusion. The solution out of the dialysis tubing had a higher distelled iodine concentration of solutes (iodine + H2O) than did the starch solution. So iodine move into the cell and react with starch molecules to formed starchiodine‚ the blue compound
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Stuart Mill‚ author of the chapter “Of the Liberty of Thought and Discussion” in the philosophical work On Liberty‚ outlines four main arguments of why society is impacted by the silencing of others’ opinions. Wayne Fuller‚ author of the chapter “Diffusion of Knowledge” in the work The American Mail: Englarger of the Common Life‚” presents ideas that Mill would be able to apply his ideas to. Mill’s first argument is that suppressed opinion has the possibility of being true‚ which is why no idea can
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The purpose of the experiment conducted was to observe if a higher concentration or lower concentration gradient would affect the diffusion rate of the iodine moving through the starch concentration. This was shown to be an accurate experiment as with a higher concentration gradient the diffusion that did occur happened a lot faster and diffused more efficiently compared to no iodine solution and just water. This is due to the molecular collisions speeding up the experiment in the time period given
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structures even rivaling those of the prominent Classical Period. Although Christianity and Buddhism both flourished through social interaction over the silk roads‚ which lead to immense cultural exchange‚ there were various reasons linked to religious diffusion which were greatly taken advantage of with respect to regional and religious distinctions. Starting in 200 BCE and developing well into 700 CE‚ the silk roads and sea routes spanned across most of Asia‚ linking the Roman Empire with China and other
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native religion‚ allowing it to be accepted in society and spread through monasteries and schools. However‚ they both did become incredibly popular and proliferate. There are multiple arguments that can be taken on to explain the differences in diffusion during this time period. Politically‚ Christianity posed a greater threat to the Jews than the Buddhists to the Hindus. Economics also played a role; Buddhism had the silk roads to travel and spread through. Religiously‚ Christianity and Buddhism
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Answers about “Four Products: Predicting Diffusion (2008)” Read and consider the article. Answer the following questions related to the article. 1. Which of the four products described are you most optimistic about in terms of its likely success? Why? a. Synthetic race track (Polytrack) is my choice of products most likely to succeed. Gambling/odds making/ betting are a big industry throughout the world. The benefits of a softer race track that will cut down on injuries to
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Federico Currò Msc International Marketing ID. 12722219 Innovation diffusion‚ social change‚ and implications to international marketers. The history of social evolution demonstrates how the diffusion of innovation has often resulted in significant social change. However‚ the way in which innovation affects society is complex and controversial. This essay aims to analyze the phenomenon in the contemporary era‚ applying the analysis to an international
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