INTRODUCTION This experiment outlines the techniques necessary to determine the equilibrium constant for the formation of an iron(III) thiocyanate complex ion (FeSCN2+) from Fe3+ and SCN- . The quantitative preparation of several solutions and subsequent measurement of the solution absorbance using a spectrophotometer are the techniques that will be used in this experiment. The absorbance measurement gives the concentration of FeSCN2+. The concentrations of Fe3+ and SCN- are obtained as the difference
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of plant cells. Water always moves from an area of high to low water potential. 2. When the two solutions on either sides of the membrane are equal and no net movement is detected‚ the solutions are isotonic. This means that the solutions have the same concentration of solutes. If two solutions differ in the concentration of solutes that each has‚ the one with more solute is hypertonic. The solution that has less solute is hypotonic. 3. This experiment was performed to measure the osmosis of small
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do cells gain or lose water? Did water move into the cell or out of the cell while it was surrounded by hypotonic solution? The water moved into the cell‚ because there was less water inside the cell than outside (there were fewer water molecules inside). 2. In which direction did the water move though the cell membrane when the cell was surrounded by the hypertonic solution? The water moved out of the cell because there was a higher concentration of water inside the cell than outside (there
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hot 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 in
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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: When animal and plant cells are placed in a solution‚ the movement of water is not effected by
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flow through the membrane‚ this allows osmosis to happen to cells in certain solutions. Osmosis can affect the cell in three different types of ways. The cell can become hypertonic‚meaning the concentration
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OSMOSIS LAB BACKGROUND INFORMATION. Dialysis tubing is being used to model a plasma membrane. Isotonic solutions are solutions that have the same concentration of solutes on both sides of the membrane. Hypertonic solutions are solutions that have more solute to the one with less solute. Hypotonic solution are solutions that have less solute to the one with more solute. RESEARCH QUESTION:which dialysis tubing will gain the distilled water and which one will loss its content
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A case study is an empirical enquiry that investigates a contemporary phenomenon in depth and within its real-life context‚ especially when the boundaries between phenomenon and context are not clearly evident. The case study inquiry copes with the technically distinctive situation in which there will be many more variables of interest than data points‚ and as one result relies on multiple sources of evidence‚ with data needing to converge in a triangulating fashion‚ and as another result benefits
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Case Study Analysis This handout provides you with information about how to analyze a case study and write up your analysis in a professional report‚ letter‚ or memo format. Analyzing a Case Study What is a Case Study? A case study is a narrative used to help students practice real-life analysis and communication skills. It is a learning tool. It provides readers with “enough detail…to understand the nature and scope of the problem‚ and…serve as a springboard for discussion and learning” (O’Rourke
Free Scientific method Case study
Results The Malpighian tubules were incubated in the solutions for 15 minutes before being observed. The transport of CPR into the lumen was highest when there was no addition of oligomycin‚ ouabain and p-aminohippurate (PAH). The least transport occurred from the addition of ouabain and PAH (table 1). There was a strong positive correlation (R2=0.9881) between increased potassium concentration in the CPR solution and the transport of the solution into the tubule (figure 1). The least tubule transport
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