Solutions Essay

method resulted in a number that made sense for the extraction sample of an original 5% in water solution, 3.46%. The week two experiment resulted in a large amount of error, meaning that the conclusions drawn were not accurate, even though theoretically the standard addition solution should have had more accurate results. The main problem set out to be solved is finding ethanol percent in solutions of which the ethanol

determine what is the concentration of the unknown solution along with what concentration would be more isotonic to the chicken egg? Hypothesis If we placed our chicken egg into a higher percentage of sucrose solution for a set period of 60 minutes then the egg will gain weight. If the egg gained weight then the sucrose solution it was placed in had a low concentration that would make it hypotonic. If the egg loses weight then sucrose solution it was placed in had a high concentration that made

different sucrose solutions overnight. The hypothesis was if you place Jicama cores into different cups containing a lower amount of sucrose concentration and a higher amount of water concentration, then the cell’s mass would change. It was predicted that the cells’ mass would decrease due to less water transferring through the plasma membrane, and this is due to a lower water concentration being inside the solution than inside the core. Tests were taken to see which sucrose solutions caused the mass

Norah Albaiz CHMY143-016 Katie Link Lab Partner: Lydia Aman Freezing Point Depression Measurements Purpose: The purpose of the experiment was to determine the molar mass of three unknown solutes by measuring the freezing point depression of a solution containing each of the unknowns. When a solute is dissolved in a solvent, the vapor pressure of the solvent is lowered. As a result of the decrease in the vapor pressure, the colligative properties change. Colligative properties include vapor pressure

increase from the initial and final recordings. These tubes show that lower salt concentration is optimal for enzyme activity. Due to the lower concentration of NaCl in the solution, the enzyme is able to react more with the substrate. The more the ONPG reacts with the Lactaid, the more product is created, which in turn makes the solution a more concentrated yellow rather than a pale yellow. Referring to Figure 2 again, the most product was created from Tube 4 containing 5% NaCl concentration.

In order to conduct this experiment, a hypothesis had to be made on what would happen to the egg when it is placed in water and the question was answered by saying that it would alter in shape because of osmosis. Osmosis is when water moves from an area of lower solute concentration to an area of higher solute concentration. Then after making our hypothesis, the experiment was started by grabbing the egg from the bucket of vinegar with our hands. Second, the egg had to be taken to the sink and gently

There are various factors relating to molecular structure that influence paracetamol solubility in various co-solvent systems. Dissolving a solute involves breaking intermolecular forces between solvent molecules and forming intermolecular bonds between solvent and solute molecules. In part this depends on the strength of solvent intermolecular forces, which is reflected in the solvent’s viscosity. Of the co-solvents, glycerol has the greatest viscosity and hence the strongest intermolecular forces

Have you ever seen a sugar cube just magically disappear when stirred in a hot cup of tea? If yes, this is the work of solubility. Solubility is the dissolving of a substance or a solute into a liquid or a solvent. In the tea example, the sugar cube would be the solute because it is being dissolved and the tea would be solvent because it is doing the dissolving. There is much more to solubility than a solute and a solvent though, there is a certain temperature that all solvents must be to dissolve

Discussion: This lab shows ‘diffusion’ of agar cube. The agar contains high concentration of solute (phenolphthalein) and the sodium hydroxide has lower concentration of solute (phenolphthalein). So as the phenolphthalein in the agar cube diffuses out to the sodium hydroxide, which turns the color of liquid, the sodium hydroxide diffuses into the agar cube that turns the color of agar cube as well. Based on the result, the optimum size for a cell is small size as they could be. The reason why is

concentration between the solution and potato. For instance, in the graph that above shows the first one on x-axis is the highest mass of potato that spent 5 days in distilled water. On the other hand, the fourth one is the lowest mass, which represents 4M sucrose solution of potato. Moreover, the data proves my prediction, as water molecules from higher sucrose solution of potato moves out actively from the potato through semi-permeable membrane into the sucrose solution. In details, the important