The Effect of Different Molar Mass on the Diffusion on Substances Lunar-maius A. Gaerlan Group 2 Sec. X – 9l August 15‚ 2012 ABSTRACT The effect of molecular weight on the rate of diffusion was assessed using agar-water gel test. The agar-water gel set up was composed of a petri dish of agar-water gel containing three wells. Drops of potassium permanganate (KMnO4)‚ potassium dichromate (K2Cr2O7) and methylene blue(C16H18N3SCl) were simultaneously introduced to each well. Methylene blue
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1. Diffusion and Osmosis‚ June 4‚ 2013 2. Purpose: The purpose of this lab is to help give visual understanding of diffusion which is a solution of high concentration spontaneously (no energy required) moving to an area of low concentration. Also taking a look at osmosis‚ which is the movement of chemicals across the cell membrane. Osmosis requires some type of energy to be put in for this to happen. After these experiments we should have a better idea and visualization of how chemicals transfer
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reaction than the other test tube. Which simply contained 10 mL of 3% hydrogen peroxide. The factor that affected the reaction rate was that the manganese was seen as a catalyst. The reason collision theory relates to this experiment is due to the fact that the catalyst creates a higher activation energy and this causes more collisions‚ which increases the reaction rate. In the second experiment‚ the Alka Seltzer tablet was
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S1 Beginning with Science 02: Scientific Investigation Scenario 1. 2. Describe why the investigation above is not adequate to explain what types of rocks will dissolve in water. They need to use the same rocks from the backyard. You can’t compare different types of rocks. Just because it appears to shrink doesn’t mean it actually did. You need real data of what the mass of the rocks were before the rainstorm. 2. Using what Christopher and Kate have already observed‚ suggest a possible hypothesis
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FOREIGN POLICY “Foreign Policy begins where domestic policy ends” (Henry Kissinger) INTRODUCTION Foreign Policy refers to the ways in which the central governments of sovereign states relate to each other and to the global system in order to achieve various goals or objectives. A country’s foreign policy is a set of political goals that seeks to outline how that particular country will interact with other countries of the world and‚ to a lesser extent‚ non-state actors. Foreign policies
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Chapter 7 Variable Costing: A Tool for Management Solutions to Questions 7-1 The basic difference between absorption and variable costing is due to the handling of fixed manufacturing overhead. Under absorption costing‚ fixed manufacturing overhead is treated as a product cost and hence is an asset until products are sold. Under variable costing‚ fixed manufacturing overhead is treated as a period cost and is charged in full against the current period’s income. 7-2 Selling and administrative expenses
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P3: Describe how two businesses are organised Tesco Purpose the first business that I have chosen is Tesco PLC. Tesco’s purpose is to serve its customers. The primary function of any business is to make money and invest; if it doesn’t do that‚ it can’t exist. Tesco is a major retailer in grocery and general retailing. As Tesco is a profit-based business‚ it maximises their sales and profit‚ expanding to maintain its competitiveness in addition to outshining competitor. It also focuses on
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The effect on rate of an enzyme catalysed reaction by different objectives which include effect of substrate‚ temperature‚ ph and effect of a competitive inhibitor phosphate ions. This is determined by the reaction of hydrolysis by p-nitrophenylphosphate (PNP) as a substrate by the enzyme phosphatase. Abstract The hydrolysis of p-nitrophenyl phosphate has been studied in human red blood cells. To see if hydrolysis was related to the functioning of the sodium pump. Acid phosphatase catalysis’s
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(B): Describe how two pieces of legislation impacts on the setting. For this assignment‚ I will consider how rights and responsibilities of service users and service providers in the setting are impacted by the use of legislation. According to www.dhsspsni.gov.uk “Legislation is defined as the act of making law(s) by the Governing Body in a country. Legislation is needed for the implementation of policies in‚ e.g. hospitals” The two legislations I will consider are; • The Northern Ireland Act
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Diffusion is a way nonvascular plants can get water. It is the movement of molecules from an area of higher concentration to an area of lower concentration until they are equal. An example of diffusion is red food coloring. When you put food coloring in a glass of water the color will spread through the water until all of it is a red tint. This shows the molecules of the food coloring equally distributed in the area of the water. Osmosis is a special type of diffusion where only the water molecules
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