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  • 3 5 Mols Na Cl Solution
    323 words
    Salinity ExperimentAimTo determine a method of measuring a soil sample's salinity level in order to measure 3 samples's salinity level. Hypothesis I think that by running a current through a salt solution and measuring the resultant amperage, a pattern in the recordings will help find a soil sample's salinity level. Variables Controlled - Amount of solution (100 mL), supplied voltage (4 V), amount of soil (50 gm) & water (150 mL) in soil sample's solution. Independent - Amps recorded by ammeter....
  • Copper With 3 Ml Of Nitric Acid
    682 words
    The Sequence of Chemical Reactions Drew Selfridge Dave Allen, Lab partnerInstructorYang February 11, 1997 INTRODUCTION This experiment was to recover the most amount of copper after its subjected to a sequence of reactions. The copper is originally in solid form, but the reactions will turn it into free Cu+2 ions floating in solution. The ions will then be regrouped to form solid copper once again. During this process, however, some of the Cu+2 ions may be lost. The copper will subjected to chan...
  • Filtered Solution
    293 words
    Purifying Acetanilide by Recrystallization Four test tubes of 13 x 100 were obtained and labeled "Acetone", "Water", "Ethanol", and "Petroleum Ether". Approximately 100 mg of Acetanilide and 2.0 ml of appropriate solvent were added in each test tube. The test tubes were stirred thoroughly. After stirring, it was observed that in which solvent acetanilide is insoluble at room temperature. The insoluble test tubes were heated to boiling using the sand bath and were cooled to room temperature. Late...
  • Test Tube With The Temperature
    715 words
    Implementing: -1. First, I gathered the necessary equipment: SS Thermostatically controlled water baths I ceSS ThermometerS S Stop watch Test tubes Photographic film (b / w) SS SyringeS S Test tube rack RulerS S Scissors SS O. 1% trypsin made in pH 7 buffer solution Mounted needle 2. I then decided on the range of results and temperatures I was to investigate. I decided to observe 20 o, 30 o, 40 o, 50 o, 60 o, 70 o and 80 o. 3. Next, I label each test tube with the temperature to be investigated...
  • 30 Minutes The Potato Piece Needs
    1,018 words
    GCSE Biology: Osmosis in a PotatoAimTo investigate the effect of placing a piece of potato in a given strength of sugar solution. Prediction predict that, as the solution becomes more concentrated the more the cell will shrink, as the water, of higher concentration inside the potato cells, flows down a concentration gradient into the solution, which has a lower concentration of water molecules. If we say that the percentage change when the potato is placed in the 1 M solution is x%. I predict th...
  • Solution In The 100 Acetone Tube
    1,432 words
    Abstract This is an experiment on how chemical stress effects cell membranes, specifically the tonoplast of Beta vulgaris taproot cells. This experiment involved the treatment of the aforesaid cells with different concentrations of an acetone solution, and testing the resulting solution for absorbance of light by betacyanine, using a spectrophotometer. It had been hypothesized that the higher the concentration of acetone in the solution, the higher the concentration of betacyanine in the resulti...
  • 2 Experimental Results Figure 2 Pngfigure 4
    1,951 words
    Thomas LevineAbstractMany cyberneticist's would agree that, had it not been for web browsers, the deployment of link-level acknowledgements might never have occurred. Given the current status of homogeneous models, theorists famously desire the evaluation of online algorithms, which embodies the confirmed principles of separated programming languages. We present a solution for the refinement of Markov models, which we call Drabber. Table of Contents 1) Introduction 2) Drabber Study 3) Implementa...
  • 250 Ml Flask The Buffer Solution
    778 words
    Title: Polymerase Chain Reaction Simulation Propose: The propose of this lab was to understand how by running a gel electrophoresis on a batch of DNA we are able to see how many approximately cycles it has gone through. Methods: Casting the Agarose Gel In this experiment. 8% solution was used. By using a 250 ml flask the buffer solution was prepared. Using the equation to make enough solution for the entire lab class the equation had to be multiplied by four. The contents of this equation were a...
  • The Electrolysis Of Copper Sulphate Solution Using Copper Electrodes
    2,478 words
    Planning I did some preliminary work to see which current values, and for how long to time. The results of this are in the tables below: Electrode-1 AMass before (g) Mass after (g) Mass change (g) Anode 1.381. 30-0.08 Cathode 1.351. 65+0.30 This was done for 10 minutes. The mass lost at the anode should equal the mass gained at the cathode, which this doesn't, it has a percentage inaccuracy of 0.22. 30100 = 73% which is very inaccurate, This may be due to the current being too high, so the coppe...
  • Nacl Solution At 0 2 Molar Concentration
    1,454 words
    Introduction Knowing that osmosis (a diffusion of water) will occur across a semi-permeable membrane whenever there is a difference between the water concentrations on the two sides of the membrane, and knowing that when this happens to cells they will either become turgid if water flows into them, or plasmolysed if water flows out of them, and thus change their volume, we want to test the hypothesis that: If the concentration of a solution into which a cylinder of potato is placed is greater th...
  • Concentration 0 M The Solution
    2,188 words
    valuation Reflecting upon the criteria selected for purposes of this investigation, overall experiment was in agreement with the hypothesis. The set of results obtained demonstrated a clear correlation. Existing scientific logic can be applied to explain any discrepancies, which is included in the conclusion. The experiment was relatively straight forward to carry out, in the sense that the method I used was well thought out and coherent. No complex technical equipment was used either and so I w...
  • More Acidic Condition
    243 words
    Analysis From my results I could see that the amylase seemed to break down the starch at a quicker rate when it was in a more acidic condition. When we tested it in an alkaline condition it didn't manage to break down the starch in the hour that we had available. From my graph it is clear that the more acidic the buffer solution the quicker the starch was broken down by the amylase. The graph showed a positive correlation as the length of the reaction increased due to the more alkaline condition...
  • Results For The Sucrose Concentrations
    646 words
    The results of this lab where quite what one would expect. The lower the mol age of the sucrose concentration, the more the potato grew in mass. For an extreme example take the final results of the distilled water and the 1 M of sucrose solution. The % in weight change for the 1 M of sucrose concentration was -12.5 which was over all the highest change, and the least mass left in the potato cores. The opposite was true for the potato cores in the distilled water. In the end they grew by 5.7%, th...

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