and stays the same shape. All the carrots we put in the salt solution was from the same carrot‚ the 0% carrots mass was 6.8grams‚ the 5% salt solution is 14.6 grams‚ the 10% salt solution is 6.3grams and the 15% salt solution is 6.8 grams. My hypothesis was that the carrot would shrink and be very small and gooey‚ but it was wrong. The controlled variable in this lab is the carrot and time‚ the manipulated variable is the salt solution‚ and the resulting variable in this lab is what happens to
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The Effect of Osmosis on Differences of Amount of Sucrose Osmotic Pressure and its Influence on the Concentration of Sucrose in Solution Brennan Montoni Movement of molecules and Ions Names of Lab Partners Biology 110 March 23‚ 2011 Code of Academic Integrity INTRODUCTION: During the process of osmosis‚ water will move across a differentially permeable membrane. The water will transfer from a region of lesser solute concentration to a region of greater solute concentration
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Lab : Iodine-starch Clock Reaction Pre-lab: Before the lab was conducted‚ the concentration of the Iodate ions to be in the mixture made by dissolving specific volumes of solution A with a constant concentration and water was calculated using the dissolution formula: C1V1 = C2V2 Sample Calculation 1: Concentration of the Iodate ions: For mixture 1: C2 = C1V1/ V2 = (0.020mol/L) x (0.003L)/(0.01L) = 0.006mol/L The same calculations were used in the calculating of the
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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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Potatoes Lab #1 Purpose: To find the molarity/concentration of potato cytoplasm. Materials: As on page 1 in the lab handout. Procedure: As on page 1 in the lab handout. Data and Observations: Test Tube # | Concentration of sucrose solution (mol/L) | Initial Mass (g) | Final Mass | Percentage change in mass | 1 | 1.0 mol/L | 3.00g | 2.25g | -25.0% | 2 | 0.9 mol/L | 2.70g | 2.07g | -23.3% | 3 | 0.8 mol/L | 2.92g | 2.25g | -22.9% | 4 | 0.7 mol/L | 2.60g | 1.94g | -25.4% | 5
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TABLE OF CONTENTS What is a Mixture? What are the types of Mixtures? Define:-solutions -suspensions -colloids (Draw and compare.) Methods of separation 1. Filtration 2. Distillation (simple and fractional) 3. Paper chromatography 4. Solvent extraction 5. Separating funnel 6. Evaporation 7. Crystallization 8. Sublimation Draw and explain each. What is a mixture??? A mixture is a combination of two or more substances that are not chemically
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You can separate solutions into two categories‚ colligative properties and non-Colligative properties. Colligative properties are different from non-colligative properties because they focus on the dissolved particles‚ not the solute itself. Non-colligative properties depend on the specification of the dissolved particles and the solvent. Colligative properties are properties that depend on the dissolved solutes in the solution. There are four main colligative properties; vapor pressure‚ freezing
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concentration of salt (NaCl) affect the mass of a potato soaked in water (H2O) with different concentrations of NaCl over the course of 30 minutes? Hypothesis: It is expected that the solution with the highest concentration of salt will cause more mass loss to the pieces of potato. The pieces that will be placed in the solution with the lowest concentration of salt will have small weight loss. Finally‚ the pieces that will be placed in water (NaCl concentration 0) will gain weight. This is expected because
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osmosis and diffusion is that they both equalize the concentration of the two solutions into a membrane. Osmosis and diffusion both work together to move water molecules from an area of high concentration to an area of low concentration. The
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compound. Introduction The solubility product constant‚ Ksp‚ is a particular type of equilibrium constant. The equilibrium is formed when an ionic solid dissolves in water to form a saturated solution. The equilibrium exists between the aqueous ions and the undissolved solid. A saturated solution contains the maximum concentration of ions of the substance that can dissolve at the solution’s temperature. The equilibrium equation showing the ionic solid lead chloride dissolving in water is:
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