Case Solution Essay

The purpose of this lab was to determine the effect of solutions with different salt concentrations on the mass of a potato slice. The data collected and analyzed in this experiment seems to support the hypothesis, which stated that the mass of a potato slice would decrease, as the salt concentration increased. This can be evidenced in Graph 1 where the downward slope of the data shows a negative correlation between salt concentration and average percent change. During the experiment, only the

Osmosis is diffusion of water across a selectively permeable membrane. The net movement of water through the membrane goes from an area of high concentration to an area of low concentration until equilibrium is found. When a cell is placed in an isotonic environment, equal solute concentration, there will have no net movement of water. A hypertonic environment will have a greater solute concentration, where the cell will have a lower solute concentration. A hypotonic environment will have a lower

a movement of a solvent occurs through a semipermeable membrane to equalize the concentration of solute on both sides of the membrane. The diffusion of water across the cell’s membrane down to its concentration gradient is called osmosis. In this case, the concentration gradient is the difference of density between one side of the cell membrane to the other. Since the cell’s membrane is permeable, particles can flow freely in and out of the cell, but the net flow will be strong in the direction

Effects of temperature manipulation and solution treatment on the Beta vulgaris craca plant cell membrane and the change of the concentration of betacyanin when placed under these various stresses Introduction: The Beta vulgaris craca plant, commonly referred to as the beet root contains a pigment, red in colour, called betacyanin. The betacyanin’s containment within the cells of the beet root cell relies on the stability of the plant’s membrane structure. The manipulation of the cell’s membranes

For a solution to be Isotonic cells are placed in water, so they neither gain or lose water through osmosis because the concentration of solutes in the cell are equal to the solutes outside of the selectively permeable membrane. (Jarod Saucedo, 2012). Although isotonic solutions neither gain or lose water Hypertonic Solutions on the other hand loses water by osmosis and shrink, this is when osmosis uses diffusion.

the freezing point of solution, different solutes are dissolved in solvents. When a solute is combined with a solvent, such as dissolving sugar (solute) into water (solvent), a solution is formed. The process of decreasing a freezing point of a liquid by dissolving a solute in a solution is referred to as freezing point depression. The freezing point is a colligative property, which means that the freezing point depends on the number of solute particles dissolved in a solution. For example, CaCl2

identify our unknown. For the first lab, students worked individually to purify vanillin, but worked in pairs in order to purify an unknown. We began the process of purifying vanillin by weighing it out and dissolved in water, afterwards we placed the solution in an ice bath. After a minutes, we vacuumed out the vanillin, in order to obtain the crystals. In general, recrystallization is used to purify compounds—which was the purpose of this la . As for the unknown solid, a similar process was conducted

Concentrations of Salt Solutions Introduction: Osmosis is the movement of water molecules across a partially permeable membrane from a region of high water potential to a region of low water potential. It can be affected by several different variables including concentration of salt solutions. When a plant cell is put in pure water it will become turgid and it will not burst due to the presence of a cell wall and a large permanent vacuole and when it is put in a concentrated solution it will be plasmolysed

Purpose : The experiment this week had two different purposes. The first is to teach us about freezing points. This lab was designed to show us the freezing point of a pure solvent, in comparison to a solvent in a solution with a non-volatile solute. The second goal of the experiment is to teach students about osmosis. In the experiment, we got to observe osmosis as well as understand dialysis. Procecure : Part 1. Colligative Properties 1. Create a water bath

formulations and steroid injection. 1.3.2 Disadvantages [8]:- It reverses the effects of drugs that have been administered parentally. This is not harshly the case with other routes of administration, e.g. oral and transdermal. 1.4 FORMULATION CONSIDERATION AND FACTORS AFFECTING PARENTRAL[9] Parenteral formulation categorized as solution, suspension and emulsion. Its main formulation consideration for parenteral formulations is described below. 1.4.1 Solubility of therapeutic agent [10][11]