Buffer solution

hypotonic osmosis occurs. The concentration of the solution outside of the potato cells was higher than the concentration inside the potato. This caused the transportation of the solution towards the lower gradient. The solutions 0.40mol/L, 0.60 mol/L, 0.80 mol/L, 1.0mol/L lost mass after diffusion. This is due to there being a higher concentration inside of the potato cells than in the glucose solution. The transport went to the glucose solution outside of the potato, which made it…

In this lab we wanted to identify what the four mystery liquids were using density and their characteristic properties. We were initially given four liquids that were labelled numbers 1- 4, some graduated cylinders, and a scale, but we also knew that the 4 liquids were ethanol, vegetable oil, water, and cyclohexane. Using the mass that we found when we measured the liquid and using only 10 mL of the liquids we were able to calculate the density and easily identify the liquids and see if they…

experiment, we set out to determine the osmolarity of a potato. In order to do this, we placed potato pieces in seven different solutions of varying sucrose molarity. First, we weighed each potato piece to obtain the initial weight, shown in Figure 1. Then, we split the pieces vertically before placing them in the cubs containing the sucrose solutions. In each cup was a solution of sucrose with a molarity ranging from 0.0M to 0.6M. After placing the potatoes in the cups, we allowed them to…

Emma Kilgore Science Period 2 January 12, 2016 The Evaporation of Liquids When a liquid is left in a warm car over a certain period of time some people might notice that the liquid seems to have lessened. This is because of evaporation, evaporation is when a liquid changes into a gas because of an increase in temperature or pressure. This brings up many questions having to do with liquids and evaporation so, do all liquids take the same amount of time to evaporate?…

translocation of solutes. A solution that is hypertonic contains a higher concentration of solutes than water. Conversely, a solution that is hypotonic contains a higher concentration of water than solutes. An isotonic solution is one which has a relatively equal amount of water and solute. This is important in osmosis because the state of the solutions outside and inside the cell determine the movement of the water. For example, if the cell is placed in a hypertonic solution, the water will…

If the solution is in an open container, Ψp is 0, so the water potential of the solution equals its solute potential. This equation will be used in the results section where we calculate the water potential of 3 plant species using the above methods. Variables The independent variables were the type of plant used (apple, potato, or yam) and the concentration of the sucrose solution. The overarching independent variable was the type of plant.…

My partner and I decided to discuss how understanding the concept of pillow method could affect our relationships with our peers. The pillow method works by breaking down a problem or argument into the 5 different perspectives. Understanding all of these perspectives can be valuable insight into resolving the problem and developing empathy, feelings that a person shares with others. Jordan described an argument with his sister in which his sister believes that ketchup tastes better than mustard…

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…

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.…

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,…