about freezing points. This lab was designed to show us the freezing point of a pure solvent‚ in comparison to a solvent in a solution with a non-volatile solute. The second goal of the experiment is to teach students about osmosis. In the experiment‚ we got to observe osmosis as well as understand dialysis. Procecure : Part 1. Colligative Properties 1. Create a water bath by filling ½ of the 100 mL beaker with cool water‚ adding crushed ice to the beaker so the water level is just
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ASSIGNMENT COVER MBA YEAR 1 Surname First Name Student Number Subject CORPORATE STRATEGY Assignment Number 2 Tutor’s Examination Venue JOHANNESBURG‚ GAUTENG Date Submitted Submission First submission Re-submission Postal Address E-Mail Danisile.nyathi@socdev.gov.za / gracen@mweb.co.za Contact Numbers 012 312 7681 (Work) Course/Intake JANUARY 2011 Declaration: I hereby declare that the assignment submitted is an original
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Osmosis Lab Research Question: In this lab‚ our goal was to look at the effects of different sucrose concentrations on osmosis in potatoes. Our research question was “How do the sugar levels affect the rate of osmosis in potatoes?”. Background Information: Solutions consist of solutes dissolved in a solvent. In all living organisms there are many different types of solutes including salts and sugars. The major solvent is water. There are different concentrations of solutes in various regions
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Effect of Osmosis on RBC’S Objectives : 1)Find the difference between three Red Blood Cell’s samples that undergo Osmosis in : a)0.5 % Distant Water solution. b)0.9 Nacl solution. c)10 % Nacl solution. 2)What materials did you use. 3)Define the procedures that the three samples undergo. 4)Give a brief result for your experiment. Materials : Sterilized lancets ; 3 blood samples ; 3 slides ; antiseptic wipes ; bandages ; tooth picks ; 0.5 % d.w solution ; 0.9 % Nacl solution ; 10% Nacl
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weigh less due to osmosis. Our null hypothesis was: If the pH level of a solution is either acidic or basic‚ then it will have no effect on the weight. The independent variable was the different solutions of different pH values. The dependent variable was the weight of the potato‚ which was measured in grams. The baseline of this experiment is the weight of the potato when in the milk solution because milk has a neutral pH. The controls in this experiment are that each sample had
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transport of materials in three semi-permeable membranes: dialysis tubing‚ eggs‚ and onion cells. Background Information 1. Diffusion is the movement of solutes from high to low concentration. Osmosis is the movement of water from low to high concentration. Both refer to movement in/out of a cell‚ but osmosis refers specifically to water. 2. Isotonic‚ hypertonic‚ and hypotonic all refer to the comparison of concentrations of solutes in verses out of the cell. Isotonic is when the concentration in
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Discussion Questions 1‚ 3‚ 5‚ 7‚ 9 Pages 28-29 Week/Session 1 Questions for Review 1. What are the four basic activities that comprise the management process? How are they related to one another? " The four basic activities that comprise the management process are as follows: Planning and Decision Making‚ Organizing‚ Leading‚ and Controlling. Managers engage in these activities to combine human‚ financial‚ physical‚ and information resources efficiently (using resources wisely and in a cost-effective
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Osmosis of a Potato cell. Hypothesis is that the potato in saltwater is going to show that it will break down the cells of the potato. Osmosis is the diffusion of a solvent through a semi-permeable membrane‚ from a solution of low solute concentration to a solution with high solute concentration‚ up a solute concentration gradient. Net movement of solvent is from the less-concentrated to the more-concentreated.‚ which tends to redure the difference in concentrations. This effect can be countered
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NAME: Donna Ha TITLE: Measuring the Rate of Osmosis Using “De-shelled” Chicken Eggs INTRODUCTION: In order to fully understand the concept of this experiment‚ one must first be introduced to diffusion. Diffusion is a spontaneous process by which molecule particles move from one area that is highly concentrated to another area in which its concentration is lower. Cells contain fluids and are surrounded by fluids; in order for a cell to function it is required to be in a balanced state. The
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class average‚ there is evidence that osmosis did occur in the bags. The largest change in mass was in the 1.0M sucrose bag the mass went from 12g initially to 14.2g‚ this gained 2.2g‚ an 18.3% change in mass for the group data over the duration of the experiment. The 0.2M bag went from 10.2g to 10.9g a 6.9% change in mass; the 0.4M bag went from 12.1g to 12.2g .83% change in mass; the 0.8M bag went from 10.9g to 12.2g and an 11.9% change in mass. During osmosis water diffuses‚ going from an area
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