Diffusion is one of several transport phenomena that occur in nature. A distinguishing feature of diffusion is that it results in mixing or mass transport without requiring bulk motion. Thus‚ diffusion should not be confused with convection or advection‚ which are other transport mechanisms that use bulk motion to move particles from one place to another. In Latin‚ "diffundere" means "to spread out". There are two ways to introduce the notion of diffusion: either a phenomenological approach starting
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002141-0012 Nuba Jackson IB Biology Microbiology IA How effective is Lysol in the reduction of bacterial growth compared to Pinesol in reduction of E. Coli growth in agar at room temperature? Background Information: Pinesol and Lysol are both common household disinfectants that make very big commercial claims; both claim to kill 99.9 percent of bacteria. Lysol contains
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supposed to hold up the structure of the cell keeping all organisms in alignment. Osmosis is the movement of solvent molecules through a partially permeable membrane into a region of higher solute concentration‚ in order to equalize the solute concentrations on the two sides. We didn ’t know anything about osmosis except that it was a word in the dictionary that we never picked up. Osmosis and diffusion are similar because osmosis is the result of diffusion across a semi-permeable membrane. If two solutions
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IAS 38 INTANGIBLE ASSETS | | |HISTORY OF IAS 38 | |February 1977 |Exposure Draft E9‚ Accounting for Research and Development Activities | |July 1978 |IAS 9 (1978)‚ Accounting for Research and Development Activities | |1 January 1980 |Effective Date of IAS 9 (1978)
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Rendon Mr. Nichols 10/26/2011 Investigate factors that affect the period of a pendulum: The relationship between Density and Time Investigate factors that affect the period of a pendulum: The relationship between Density and Time IB Physics Internal Assessment IB Physics Internal Assessment Introduction The purpose of this experiment is to investigate the relationship between density and time in a homemade pendulum. In order to investigate the phenomenon‚ the density of the hanging object
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temperature)‚ and 70°C. This investigation tested the hypothesis: The rate of osmosis will increase as the temperature increases 2x2x2cm cubes of potato were weighed and then placed into 100mL of 10% NaCl solutions for 10 minutes. After 10 minutes the cubes were again weighed to determine the amount of mass that they lost/gained and thus get an indication of the rate of osmosis. The results collected showed that the rate of osmosis was highest in the 70°C solution and lowest in the 20°C solution. From
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Tritama Multisindo Lestari further expand their business in the promotional items industry? If yes‚ should it be through product or market development? Procedure/ Method In order to answer the research question thoroughly and accurately‚ this business IA is going to cover topics from a variety of syllabus. The background theory
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IAS 2 Inventories This version includes amendments resulting from new and amended IFRSs issued up to 31 March 2004. The section “Changes in this Edition” at the front of this volume provides the application dates of these new and amended IFRSs and also identifies those current IFRSs that are not included in this volume. International Accounting Standard 2 Inventories (IAS 2) is set out in paragraphs 1-42 and the Appendix. All the paragraphs have equal authority but retain the IASC format of the
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IFRSs issued up to 31 December 2008. IAS 7 Cash Flow Statements was issued by the International Accounting Standards Committee in December 1992. It replaced IAS 7 Statement of Changes in Financial Position (issued in October 1977). In April 2001 the International Accounting Standards Board resolved that all Standards and Interpretations issued under previous Constitutions continued to be applicable unless and until they were amended or withdrawn. Since then‚ IAS 7 and its accompanying documents have
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Name: ______________________________________ Date: ________________________ Student Exploration: Osmosis Vocabulary: cell membrane‚ concentration‚ diffusion‚ dynamic equilibrium‚ osmosis‚ semipermeable membrane‚ solute‚ solvent Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Suppose you were trapped on a desert island with no sources of fresh water. Should you drink water from the ocean? Explain why or why not. _________________________________________________________________________
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