permeable membrane. The aim of the experiment is to investigate the effect the salinity of solutions has on the process of osmosis and net weight gain/ loss by potato cells. This would be done by using similar size potato cubes and covering them with different concentrations of saline solutions (0.5% and 2.0%) in beakers then measuring the change in weight of the potato cubes. If the salinity of the solution is high then the weight of the potato cubes will decrease. Materials • 9 X 2cm2 potato cubes
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radish extract in exterminating household’s pests such as ants. Furthermore‚ the study aims to create the most effective radish extract solution in terminating pests. B. Application The study’s product aims to be applied as a pesticide. It tends to provide an alternative for the current pesticide in the market. It aims to create an environment friendly solution for minimizing household’s pests. C. Materials 1. Mortar and Pestle 2. Bottle sprayer 3. Bowl 4. Clean Cloth 5. Radish 6. Water
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Chemistry Unit 2 Area of Study: 1: Water Chapter 11: Measuring solubility Measuring Solubility Solubility: the maximum amount of that substance that can be dissolved in a that temperature Saturated solution: a solution which no more solute can be dissolved at that temperature Measuring solubility Determine the maximum mass of solute that can be dissolved in 100 grams of solvent at a particular temperature Worked Example A maximum of a 6g of solute can be dissolved in 20g of water at 20ºC
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test a liquid to see if it contains ions is to ________________________ ________________________________________________________________________ 3. Define a saturated solution ______________________________________________ ______________________________________________________________________ 4. Define an unsaturated solution __________________________________________ ______________________________________________________________________ 5. What is meant by solubility ? ____________________________________________
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A supersaturated solution is a solution that contains more dissolved substance than a saturated solution does. This occurs when a solution is prepared at a higher temperature and is then slowly cooled. This is a very unstable situation‚ so any disturbance causes precipitation. Solubility can be understood in terms of two factors: The natural tendency toward disorder favors dissolving. The relative forces between and within species must be considered. Stronger forces within solute species
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think drinking seawater killed the sailor faster than not drinking any water at all? Today we explore the cause of the sailor’s death. We’ll prepare solutions of salt water to represent the sea‚ and we’ll cut up slices of potato to represent the sailor. Potatoes are made of cells‚ as is the sailor! Objective: The concentration of solute in a solution will affect the movement
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so that a solution poured into the bag would not leak out. Next‚ the other side of the bag was opened. For step two‚ a 15% glucose/1% starch solution was tested for the presence of glucose with Benedict’s‚ and we recorded the data in a table. Using more 15% glucose/1% starch solution‚ 15 mL was placed in the dialysis bag. The other end was tied‚
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why we decided to focus this investigatory project on creating an eco- friendly cleaning solution. The problem of the modern world is that we have created far too much hazardous chemical since it does the daily chores‚ like that of scrubbing the floor‚ in a faster and easier pace‚ unknowing that this can harm the ozone layer. Our investigatory project aims to create an environment- friendly cleaning solution using citrus peelings and some of its extracts. With this investigation‚ we hope to find
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Absorbance of Light vs. Concentration of Colored Solution Introduction: Performing this lab showed the importance of light in virtual drug screening because light can be used in a variety of ways to obtain different kinds of information in research. Light can be used to determine the concentration of DNA or protein in solution‚ tag different objects such as cells‚ protein structures‚ or bacteria in order to determine whether there is a large amount of a certain substance‚ and to determine the size
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attempt to study the position of equilibrium. Furthermore‚ after the completion of this experiment‚ the formation of the equilibrium constant of the iron thiocyanate complex could be determined. In order to accomplish these tasks‚ five different solutions were made. Upon completion of the experiment‚ the results of the aforementioned experiments were calculated to an average of the final formation constant of 183. Introduction: The experiment for the Spectrophotometric Determination of Equilibrium
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