Alisha Prakash Biol 111-513 The Properties of Water; Osmosis and Diffusion Hypothesis: When animal and plant cells are placed in a solution‚ the movement of water is effected by the solute concentration of the solution. If animal and plant cells are placed in a more concentrated solution‚ the solution becomes hypertonic to the cells‚ causing water to exit the cells. This changes the appearance of the cells‚ causing the cells to look darker (more concentrated) and shriveled up. Null Hypothesis:
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To see the effects of tonicity’s on potato cells. Background: Osmosis is the diffusion of water across a differentially permeable membrane due to concentration differences. Tonicity is the concentration of solutes. The potato cell has 3% of dissolved materials. Hypertonic is when the solution has more dissolved materials outside the cell than inside. The cell will lose water this way and shrink. The potatoes in the 5% salt solution will shrink. Hypotonic is when there is less solute dissolved materials
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Conductivity Solutions Abstract: We produced conductivity tests in water and other various solutions with a computer faced Conductivity Probe using the unit of microsiemens per centimeter (uS/cm) to find out which solutions had a high conductivity and which solutions had a low conductivity. Many different solutions vary in conductivity due to the ratio of ions. Different levels of ions have an impact on conductivity because of the different charges and different types of bonds. Conductivity is
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Mixtures and Solutions can often become confusing because solutions are mixtures‚ but not all mixtures are solutions. A mixture can either be homogeneous or heterogeneous. A homogeneous mixture is where the mixture’s components are distributed uniformly within the mixture. A heterogeneous mixture is where the components are not uniform. Mixtures can either be miscible or immiscible‚ the difference being whether or not the mixture forms a homogeneous mixture or not. In a solution a solute is soluble
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constituents as cations and non-metallic constituents as anions. In this experiment‚ you will analyze a known solution that contains the entire Group I cations—silver‚ lead‚ and mercury (I)—and an unknown solution to determine which ions are present and which are absent. II. DISCUSSION: The chlorides of Pb2+‚ Hg22+ and Ag+ are all insoluble in cold water. They can be removed as a group from solution by the addition of HCl. The reactions that occur are simple precipitations and can be represented by
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mangosteen skins? 4. Which plant extract when combined with alum is suitable for dyeing a synthetic fiber? 5. Which plant extract when combined with copper sulfate is suitable for dyeing cotton? 6. Does the acidity-basicity of the dye solution affect the quality of the dyed product? What you need Dye materials: plant parts such as peelings of mangosteen fruit‚ purple camote‚ and eggplant or red mayana and pandan leaves Fabrics: cotton‚ rayon‚ or any synthetic fiber Mordants:
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A Proposal to Investigate Effective Solutions to Lack of Access of Engineering Students in Bilkent University to the Exams of the Past Years Çağatay Güleç 20902028 1.0. INTRODUCTION Students of engineering departments in Bilkent University need to study hard for their exams in order to get satisfactory grades from their departmental courses. To accomplish that‚ they need to solve either sample problems from their course books or questions from the exams of previous years. A preliminary
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Refining Solutions Sheri Johnson PHL/458 February 11‚ 2013 David McCarthy Refining Solutions 1. How exactly will your solution be applied? List all steps and all important details. Forming a watershed group that will look out for the protection of the Birch River area as far as environmental‚ water quality and recreation opportunities go. The first thing would be to make that important first decision to form the group. Secondly‚ interest must be gauged by having meetings in the area to see
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IGNOU FEG-01 Solved Assignment 2012 Foundation Course in English - 1 (FEG-01) Max. Marks: 100 Answer all the questions 1 Read the passage and answer the questions that follow: International cricket sensation Sachin Tendulkar has joined forces with UNICEF to get Indian children to wash their hands for better health and hygiene as part of the first ever Global Handwashing Day held on 15" October. Tendulkar was featured in a public service announcement that was broadcast in 14 languages on
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SOLUTION MINING A Laboratory Exercise in Extracting Copper from a Synthetic Copper Ore Your Name __Mel Hine______________________ Partner’s Name __Jay Ranson____________________ Date _October 2‚ 2012____________ Introduction This laboratory exercise involves the use of dilute sulfuric acid (H2SO4) to leach copper
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