Buffer solution

In the first experiment we use the solubility of pigments to distinguish and observe them. Solubility refers to how much of a particular substance can dissolve in a particular solvent. In this experiment we use the solubility of the different colored pigments in the leaf to identify the different pigments. For example, when looking at a normal leaf, you only see that it is green because chlorophyll a and chlorophyll b are the most abundant in green leaves because those chlorophyll’s pigment is…

Results This experiment’s results revealed that the higher the temperature of vinegar that the egg was placed in, the less time it took for the eggshell to dissolve. A data trend showed that eggs in vinegar at a temperature of 62.8C took around twelve hours to completely dissolve their eggshell. Eggs set in vinegar at 24.5C took about sixteen hours to dissolve their eggshell and eggs in 1C vinegar took about twenty hours or more (Fig. 1, Fig. 2, Fig. 3). Figure 1. This line graph…

Constraints are an important to the self-organization of human movements. There are three main categories of constraints. The categories are, individual, task, and environment. Together these three categories help us understand how coordinated movements are performed. Environmental constraints are physical variables that occur in nature. For curling this can be the amount of ambient light that the venue has. Environmental constraints can also be social, instead of physical. An example would be…

I’m contacting you about the concentrations of the two copper (II) sulfate solutions that you were unable to correctly identify. The good news is that, for both samples, we were able to accurately determine their concentrations using Beer’s Law, a well-established law that governs the relationship between a solution’s concentration and the amount of wavelength the solution can absorb under standard conditions. Before going any further, though, let me fill you in on some of procedures and…

placing them into the solutions. Also, an important observation that some of the solutions took long time to fully dissolve, for instance, the sugar > 6 hours prior the experiment, and this was not the case in the salt. 3.2. Moisture content In this experiment, two setting were conducted to see the osmotic agents and temperatures effect. Figure 1 below shows both effects on the products. Figure 1. Shows two products’ moisture content (lines are not…

Emulsions are two-phase systems, a mixture of two or more liquids that are normally immiscible. There are two phases in the system, in which one is the continuous phase and the other one is the dispersed phase. Types of emulsions [38] Oil in water (o/w): in which oil is the dispersed phase and water is the continuous phase. Water in oil (w/o): in which water is the dispersed phase and oil is the continuous phase. Emulsions have a cloudy or opaque appearance because particles scatter light…

uction The point of this experiment is to examine the result of altering the concentration of sucrose on the rate of osmosis in cylinders of potatoes. This would occur by using like sizes and lengths of potato cylinders and applying them into varying concentrations of sucrose (1%, 5%, 10%, 15%, and 30%) in test tubes then assessing the change in mass of the potato cylinders after. Sustaining all variables unaffected such as the pH, same size, and a constant temperature. Hypothesis: I predict if…

Osmosis Research Question What will happen to the length and mass of the potato when it is put in water and different concentrations of salt? Introduction Osmosis is the diffusion of water molecules from a region of higher concentration to a lower concentration of water molecules (through a partially permeable membrane). If the cell is placed in a higher water potential, water enters by osmosis and if the cell is placed in lower water potential, then the water leaves the cell by osmosis. The…

they remained as solids. The test tube was then placed into a centrifuge and ran for thirty seconds. By doing so, the unsettled solid were forced to accumulate at the bottom of the test tube. This allowed for a more effective decantation of aqueous solution that contained component X onto the watch glass. Repetition of this extraction processes ensured that most of component X was separated from the sample. Once three washes were done, the aqueous…

As stated in the introduction the hypothesis for this experiment was that the solution beginning with the higher concentration of KMnO4 and placed in water with the warmer temperature will diffuse through the artificial membrane quicker than the solutions beginning with the already diluted solutions and placed in water at a cooler temperature. This occurring because all of the solutions are trying to diffuse to where it is less concentrated because they are eager to diffuse down its…