understanding on how osmosis and diffusion works. In its simplicity‚ it explains the process that our bodies (mainly cells) use all the time. It also showed me that even with the temperature changing‚ it doesn’t drastically change the rate of diffusion. Introduction Diffusion is important in all living systems. Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration (Purchon 1). Diffusion is the movement of a substance
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ON THE RATE OF DIFFUSION OF SUBSTANCES PRINCESS AYNAH D. SANGGACALA Biology 101.1 Professor Christina A. Barazona September 15‚ 2014 THE EFFECTS OF MOLECULAR WEIGHT ON THE RATE OF DIFFUSION OF SUBSTANCES In partial fulfillment of the requirement For Biology 101.1 By Princess Aynah D. Sanggacala Professor Christina A. Barazona September 15‚ 2014 ABSTRACT The effect of molecular weight on the rate of diffusion was figured
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A summary of Diffusion of Innovations Les Robinson Fully revised and rewritten Jan 2009 Diffusion of Innovations seeks to explain how innovations are taken up in a population. An innovation is an idea‚ behaviour‚ or object that is perceived as new by its audience. Diffusion of Innovations offers three valuable insights into the process of social change: - What qualities make an innovation spread successfully. - The importance of peer-peer conversations and peer networks.
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What Happened to the Mayan Civilization? The Mayan civilization was a thriving culture that occupied a large portion of Mesoamerica and suddenly disappeared around 900 AD. (Sayre‚ 2011‚ p. 391) Although researchers cannot find a definite answer explaining what happened to the Mayans‚ they have theories. One theory suggests mass exodus of the population due to draught‚ and another focuses on aliens. (Maya Culture Collapse: Current Theory‚ 2012; Ancient Aliens‚ The Mayan Conspiracy S04E01‚ 2012)
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Kmart‚ once the leader in the discount store industry‚ has found itself surpassed by Wal-Mart and Target in recent years and is now facing the possibility of closing its doors. The differences among the companies’ successes can be seen in their business models and strategies. Wal-Mart focused on decreasing expenses and Target established its market placement as a high-quality low-cost discount store. In contrast‚ Kmart used a promotions-driven business model. Because of this‚ Kmart focused on
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Weights on the Rate of Diffusion of Substances August 22‚2012 ABSTRACT The effect of molecular weight on the rate of diffusion was verified by the 2 tests: the glass tube setup and the water agar-gel setup. In the glass tube setup‚ two cotton balls were soaked in the solutions of hydrochloric acid (HCl) and ammonium hydroxide (NH4OH) and were simultaneously placed on both ends of the tubing.NH4OH had a lighter molecular weight of 35 g/mole which diffused at a faster rate of 24.8 cm and
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1. What were the main reasons for World War I? 2. What were the results of the Bolshevik Revolution in Russia and what happened to the Romanov family? 3. What reforms were proposed by Mexican Revolutionary Emiliano Zapata? 4. What caused the end of the Manchu Dynasty in China? 5. What were the goals of revolutionary China? 6. What was the weakness of the League of Nations? 7. What were some of the new weapons used in WWI and what was trench warfare? 8. What was
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of molecular weight on the rate of diffusion was measured using two tests namely: the glass tube test and the agar-water test. The set-up of the glass tube test used two cotton balls of the same size. One cotton ball is moistened with hydrochloric acid (HCl) and the other one is moistened with ammonium hydroxide (NH4OH). The two cotton balls were inserted in both ends of the glass tube. NH4OH which has a lighter molecular weight (35.0459 g/mole) diffused with a faster rate (dave=20.25cm) as compared
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Scientific Paper on Diffusion 2 ABSTRACT The effect of molecular weight on the rate of diffusion was assessed using two tests: the glass tube test and the agar-water gel test. In the glass tube set-up‚ two cotton plugs soaked in two different substances (HCl and NH4OH) were inserted into the two ends of the glass tube. The substance with the lighter molecular weight value (NH4OH‚ M = 35.0459 g/mole) diffused at a faster rate (dAve = 25.8cm)‚ resulting in the formation of a white ring around the
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Proteins Are the basic materials of every body cell. Body cells are constantly wearing out. As a result‚ they are continuously in need of replacement Of the six nutrients group‚ only proteins can make new cells rebuild tissue. By the age of 4 years‚ body protein content reaches the adult level of about 18% of body weight. An adequate supply of proteins in the daily diet is essential for the maintenance of health. The word protein is a Greek derivation and means “of first importance”. Composition
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