1 The Effect of Molecular Weight on the Rate of Diffusion of Substances1 Alexander Ken Libranza Group 1 Sec. A – 1L March 6‚ 2012 A scientific paper submitted in partial fulfillment of the requirements in General Biology I laboratory under Prof. Cheryl M. Talde‚ 2nd sem.‚ 2011-2012. 1 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
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Lab 1: Introduction to Science Exercise 1: Data Interpretation Table 4: Water Quality vs. Fish Population Dissolved Oxygen (ppm) 0 2 4 6 8 10 12 14 16 18 Number of Fish Observed 0 1 3 10 12 13 15 10 12 13 Questions 1. What patterns do you observe based on the information in Table 4? 2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water. 3. What would your experimental approach be to
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Diffusion Through Membranes IB Biology 11 Diffusion Through Membranes OBJECTIVES In this experiment‚ you will Use a Conductivity Probe to measure the ionic concentration of various solutions. Study the effect of concentration gradients on the rate of diffusion. Determine if the diffusion rate for a molecule is affected by the presence of a second molecule. BACKGROUND Diffusion is a process that allows ions or molecules
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Chapter 6 DIFFUSION IN SOLIDS • How does diffusion occur? • Why is it an important part of processing? • How can the rate of diffusion be predicted for some simple cases? • How does diffusion depend on structure and temperature? Driving force for movement In general‚ force is a position derivative of energy (F = - dE/dr). In other words‚ if there is any energy difference in space‚ there is a force which will act on matters - Force will move things. (ex1) Potential energy by gravity:
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The Effect of Varying Molecular 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
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Unit 2 M1 Assess the potential environmental impact of a proposed construction project on the local natural environment. Potential construction project for The City of Liverpool College - LAX Author: Matthew Ellis Introduction: I have been asked to put together a report for the potential construction project for The City Of Liverpool College. The current site being looked at is on Roscoe Street. I will be discussing the consequences which could occur to the buildings in proximity to the site location
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CELL TRANSPORT MECHANISMS AND PERMEABILITY Zack Johnson Human Anatomy & Physiology Lab 2101 Instructor: Alan Byboth‚ M.S. 10/4/12 Abstract- The cell is invaluable building block of all biological life on this planet‚ and one of its most important and unique characteristics is its ability to be selectively permeable with its plasma membrane. This outer membrane’s sophisticated mechanisms of transport through its bilayer are vital in maintaining homeostasis in the cell and the entire
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FEATURES OF NATURAL MORAL LAW & DICUSS WHETHER ITS STRENGTHS OUTWEIGH ITS WEAKNESSES Natural Law has roots that stem back to Ancient Greece‚ and it was Aristotle who really created the approach. It was also depicted in Sophocles’ play Antigone‚ where the protagonist claims her right to bury her brother despite the King (Creon) ordering that he be fed to dogs. Antigone‚ (the protagonist) proclaimed this because she believed that there was a higher law than the King’s‚ particularly‚ Natural Law. However
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Ethics Essay A) Explain how Natural Moral Law theory can be used to decide the right moral action. (25) Natural Moral Law can be used to decide the right moral action because it states that there is a natural order to our world that is followed. It is determined by a supernatural power (Aquinas believes this to be God). The theory of Natural Law originally was created by Aristotle‚ and was later developed by Aquinas. The Natural Laws are universal and unchangeable and is a simple approach
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prehistoric times for humans - a primitive society not an industrialized society. 1. How might natural selection have influenced human choices and behaviors in a prehistoric society? Answer in paragraph form. Natural selection may have been influential when it came to human choices and behaviors in a prehistoric society in that the natural selection process shaping the choices and behaviors of a human. Natural selection gives reward to the individuals that are more adaptive to their own environments
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