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     higher  concentration  of  solute  (  meaning‚   a  lower  concentration  of  water)  .  In  osmosis  different  concentrations  of  solutes  are   compared.  A  solution  that  has  equal  concentrations  of  solute  is  isotonic.  A  solution   with  a  higher  concentration  of  solutes  is  hypertonic  and  one  with  less  concentration   of  solutes  is  hypotonic.  “The  term  osmolarity  is

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    Water Potential of Potato

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    concentration of the solution. Dependent variable: percentage changed in weight of the potato strips. Controlled variable: size of the potato strips‚ it can be controlled by cutting the length of the strips. Procedure: Table 1. Concentration of sucrose solution table Concentration/ M | Sucrose Solution/ ml | Distilled Water/ ml | 0 (Water) | 0 | 10 | 0.2 | 2 | 8 | 0.4 | 4 | 6 | 0.6 | 6 | 4 | 0.8 | 8 | 2 | 1 | 10 | 0 | 1. Prepared 6 solutions. 0.2M‚ 0.4M

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    Mg2+ Determination using EDTA Linh Nguyen Chem 1212L – 165 Feb 08 ‚ 2014 Purpose and Procedure: The purpose of this experiment is using Compleximetric titration and EDTA to determine the concentration of Mg2+ in solution; and also calculating the percent by mass of MgO in the unknown sample. This procedure results no significant deviations. The procedure for the experiment is from the lab manual referenced below Laboratory Experiments for Chem 1211L & 1212L (6e)

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    Solubility

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    Project on Saturated Solutions: Measuring Solubility iC BS E.c om Index 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Certificate Acknowledgement Objective Introduction Basic concepts Materials and Equipment Experimental Procedure Observation Conclusion Result Precautions Bibliography iC BS E .co m CERTIFICATE This is to certify that the Project titled ’Saturated solutions: Measuring Solubility ’ was completed under my guidance and supervision by Roll No. ________

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    measuring the absorbance‚ the concentration of a chemical substance can be determined. For the calibration of the colorimeter‚ different concentrations of a standard solution and a control (distilled water) are prepared in cuvettes. These cuvettes are put into the colorimeter one by one to calibrate it. After the colorimeter is calibrated‚ solutions of the substances which their concentrations are wanted to be determined‚ are put into cuvettes and their concentrations can be determined by this process (Dubey

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    females in society

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    CHEM 3411‚ Fall 2010 Solution Set 5 In this solution set‚ an underline is used to show the last significant digit of numbers. For instance in x = 2.51693 the 2‚5‚1‚ and 6 are all significant. Digits to the right of the underlined digit‚ the 9 & 3 in the example‚ are not significant and would be rounded off at the end of calculations. Carrying these extra digits for intermediate values in calculations reduces rounding errors and ensures we get the same answer regardless of the order of arithmetic

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    Colligative Properties

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    properties In liquid solutions‚ particles are close together and the solute molecules or ions disrupt intermolecular forces between the solvent molecules‚ causing changes in those properties of the solvent that depend in intermolecular attraction. For example‚ the freezing point of a solution is lower than that of the of the pure solvent and the boiling point is higher. Colligative properties of solution are those that depend on the concentration of solute particles in the solution‚ regardless of what

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    carbonate solution and pH indicator phenolphthalein will be added ahead of lipase enzyme; when the pH is below 8.2‚ phenolphthalein will turn from pink to colourless. Sodium carbonate solution is added in order to turn the solution alkaline and the indicator pink then back to colourless after lipase is added to catalyse the chemical reaction and speed up the breakdown of lipids into fatty acid in the milk. Fatty acid produced then is going to neutralise the solution with sodium carbonate solution added

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    Experiment 3 prelab

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    substances in solution. It compares the colors of a known and an unknown solution‚ that comparison then leads to a quantitative estimate of the concentration of trace amounts of colored materials in that solution. Chemicals and Materials 40 mL standard Tartrazine solution Yellow Dye Safety goggles 100 mL beaker De-ionized water Cuvette Lint-free Tissue Gloves (Latex-free) Spectrometer with Labquest Logger-Pro USB drive Procedure Acquire 40mL of the standard tartrazine solution in a 100mL

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    rn of the polynomial we can construct the solutions y1 ‚ . . . ‚ yn ‚ such as y1 = er1 x . We can also rewrite the equation in a weird-looking but useful way‚ using the symbol d D = dx . Examples: equation: y − 5y + 6y = 0. polynomial: r2 − 5r + 6 = 0. (factored): (r − 2)(r − 3) = 0. roots: 2‚ 3 weird-looking form of equation: (D − 2)(D − 3)y = 0 or (D2 − 5D + 6)y = 0. linearly independent solutions: y1 = e2x ‚ y2 = e3x . general solution: y = c1 e2x + c2 e3x . equation: y + 10y +

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