are preferred to one large dilution in lab experiments? Answer: Serial dilution is the technique of performing repeated dilutions on the same chemical in order to change its concentration. The diluted solution from a serial dilution can be used to calculate the concentration of the actual solution. In experimental work‚ often we need to obtain a range of concentrations for a specific compound. Thus‚ instead of preparing one large dilution‚ if we take a concentrated sample of a particular compound
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concentration. Osmosis is a type of diffusion. This is the diffusion of water through a selectively permeable membrane from a region of higher water potential to a region of lower water likely. Water potential is the measure of free energy of water in a solution. A living system also contains an active transport to make movement of particles like ions that move against their concentration gradient. The energy source ATP is used during this process to move the particles across the cell membrane. This experiment
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and cool slides? If so‚ explain. - DISPERSION SYSTEMS IN PROTOPLASM 4. DEFINE THE FF: a. Solute: The dissolve matter in a solution; The component of a solution that changes its state b. Solvent: A liquid substance capable of dissolving other substances c. Mixture: a substance consisting of two or more substance mixed together d. Solution: A homogeneous mixture of two or more substances e. Emulsion: a colloid in which both phases are liquids f. Suspension: a mixture
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can only be seen with a microscope‚ so you are going to use sticks of potato tissue in solutions that have different concentrations of dissolved substances to observe the effects of osmosis on living tissue. There are three basic relative concentrations of solutions. An isotonic solution has a concentration of dissolved particles equal to that of cells or body tissues; no net water flow occurs. A hypertonic solution has a lower concentration of water (higher concentration of dissolved particles) than
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(As The Editors Of Encyclopædia Britannica say “Paper chromatography‚ technique for separating dissolved chemical substances by taking advantage of their different rates of migration across sheets of paper. The method consists of applying the test solution or sample as a spot near one corner of a sheet of filter paper. The paper is initially impregnated with some suitable solvent to create a stationary liquid phase. An edge of the paper close to the spot is then immersed in another solvent in which
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coloring. The purpose of this laboratory is to demonstrate in which solution the LifeSaver dissolves faster within five minutes. Materials Water Salt Baking Soda Regular LifeSaver hard candy Cups Watch settled for 5 minutes Observations The Lifesavers are round shape‚ purple color‚ solid and hard and 2cm size. Water is clear at room temperature. Salt and Baking Soda are in it solid state with power appearance. Question Which solution will dissolve the LifeSaver the most within five minutes? Hypothesis
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Experiment 1: Mixtures Aim: To develop an understanding of different types of mixtures including solutions and to examine the different solubilities of some solutes in two solvents: water and ethanol Procedure: Refer to Experiments Book Pg 13 Results: Part A- Mixture Observations Classifications 1 100% Orange Juice There were suspended pulp in the juice Heterogeneous Mixture 2 100% Apple Juice Clear solution Homogeneous Mixture 3 Solder Uniform mixture Homogeneous Mixture 4 Fruit Cake Chunks of raisins
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An isotonic solution has the same osmolarity as a tissue. A hypertonic solution has a higher osmolarity and a hypotonic solution has a lower osmolarity. If samples of a tissue are bathed in hypertonic and hypotonic solutions‚ and measurements are taken to find out whether water enters or leaves the tissue‚ it is possible to deduce what concentration of solution would be isotonic and therefore predict the results of osmosis in different
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called hypotonic solution and hypertonic solution. Hypothesis: My Hypothesis for diffusion that the starch solution will be hypotonic and diffuse into potassium iodide (IkI). Hypothesis for osmosis is that each of the individual dialysis bags will increase because of the different concentration of the solutions. Which makes this and hypotonic experiment. Hypothesis for this experiment is that each of the four cylinders of potato will decrease in mass‚ because of the solution/concentration
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the effect of osmosis In potato cells Introduction I am doing an experiment to find out the effect that osmosis has on Water solution and a Sugar solution. Osmosis is a process which water moves from an area of low concentration to an area of high concentration. I am going to record my results to see if osmosis occurs in water solution of sugar solution. Apparatus In this experiment I would need; - 1) 3 test tube 2) A beaker 3) A cork borer 4) A Knife Safety
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