Solutions

synthesized in a liquid solution containing some stabilizing organic molecules, broadly termed as surfactants, which are bulky and insulating ligands. The individual NCs in the thin film are indeed separated by these ligands, which significantly inhibit the charge transport. One of the simple yet effective ways to enhance the electrical performance of NC TFTs is the ligand exchange approach,2,3 replacing the…

The goal of this lab was to find the molar sucrose concentration at equilibrium. Which is when the potato core and the sucrose solution reach equilibrium, so that no water is entering or leaving the cell. After collecting the data, the line of best fit never crossed the x-axis or showed where the molar sucrose concentration at equilibrium. I had to extrapolated the point at which it crossed the x-axis. This led to the data being unreliable because there is no physical evidence present that…

carrots soaked in solution A, one of our blue solutions, was 0.151 grams. Solution A had a standard deviation of 0.048. For solution B carrots, one of our clear solutions, the mean growth was 0.117 grams. Solution B had a standard deviation of 0.057. For solution C carrots, our other blue solution, the mean growth was negative, actually indicating a loss in weight. This mean loss was -1.426 grams. Solution C had a standard deviation of 0.121. We had another mean loss with our solution D carrots,…

to reach therapeutic plasma concentrations after oral administration. Low aqueoussolubility is the major problem encountered with formulation development of new chemical entities. Any drug to be absorbed must be present in the form of an aqueous solution at the site of absorption. Water is the solvent of choice for liquid pharmaceuticalformulations. Mostof drugs weakly acidic and weakly basic with poor aqueous solubility. Hence various…

absorbance of four known copper (II) sulfate solutions, four copper (II) sulfate solutions that were created by dilution, and one unknown copper (II) sulfate solution. The purpose of this experiment was to help students learn how to use the Spec-20, learn about the relationship between absorbance and concentration known as the Beer- Lambert law and see the relationship between moles, volume and molarity. The serial dilution technique was also used to dilute solutions to a lower concentration.…

test tubes were then prepared. The Spec 20 was set to 0% and a test tube of blank solution (water) was wiped off and placed into the Spec 20. Transmittance was then set to 100% to calibrate the machine. Next, five test tubes were prepared and labeled with one of the standard solutions of 0.05 M, 0.1 M, 0.2 M, and 0.5 M CuSO4 in them. The Spec 20 was set to 600 nm and % transmittance was measured of the standard solutions. Absorbance was calculated and recorded. Then, 2 g of solid CuSO4∙5H2O was…

represent a hypertonic, hypotonic or isotonic solution. The first solution cell and environment the student had, was water and sodium chloride. In this instance water was the model cell (what was in the dialysis tubing) and Sodium chloride was the surround environment (plastic cup). The initial weight of the model cell was 13.2g, but after sitting in the sodium chloride solution over night the cell lost water and only weighted 11.6g. Since the solution of the model cell- in this case water- left…

The hypothesis was that as the amount of sugar in the water increased, the amount of time it takes to dissolve sugar would increase. My group’s data from the experiment refutes this hypothesis, because the amount of sugar already present in the water had no effect on the time it took to dissolve. The only variable that changed was the amount of sugar that was already in the glass. Other variables my group attempted to avoid changing was the amount of water in the glass, how much sugar put into…

discuss the potential benefits of one or more of the solutions for finance that are available by SAP. For each solution, these benefits will be analyzed and I will determine if I agree with the procedures and explain why or why not. Lastly, information from the previous assignment will be used and a determination whether or not this enterprise module will be useful to my organization. Definitions First, before we can get into evaluating the solutions that are provided by SAP for the finance…

During this experiment slices of a potato were placed into beakers containing salt solutions with different concentrations. How will the percentage of salt concentration in solution affect a plant cells water content? This experiment will determine which salt solution concentrate will cause the potato cells to absorb water or lose water. Tonicity in plant cells is important. A plant cell exposed to a hypertonic solution would become shriveled due to water leaving the cell. People have been…