Add a two-gram sample of each of the above compounds to each test tube. 3. Stir the samples. 4. In the chart provided record if each compound is solubility in water.
Discussions need to include what the results mean. You can easily do this in 3-4 sentences. Solubility product constant, or Ksp, is a constant used for predicting solubility of different compounds in solution. In the experiment Ksp is determined for the purpose of knowing how much of a solid dissolves in solution at equilibrium. The Ksp for the experiment was found to be an average of 4.29x10-5, which means that 4.29x10-5 parts of a mole of solid are dissolved in the solution.
It is important for an IV solution to have salts in it so the water and solute can be equal to create an isotonic environment. If there wasn’t, there would either be a hypotonic causing the cell to burst, or there would be hypertonic causing the cell to shrink. We created models of living cells by using dialysis tubing. The dialysis tube represented the cell membrane to act as selectively permeable to water and some solutes. We observed different solutes (NaCl, Ovalbumin, Glucose, Sucrose, and Water) in the dialysis tubing.
Materials & Methods Materials: · Scale · 4 6” Dialysis Tubing · 4 Transfer Pipets · Sugar · Scissors · Rubber Bands · 4 Same-Sized Coffee Cups · 250ml Graduated Cylinder · Tape Measure · Sauce Pan · 3 600ml Containers · Plastic Covering · Spoon Methods: 1.) Place 4 6” pieces of dialysis tubing into coffee cups full of tap with and leave them for two hours prior to beginning the experiment. 2.) As you wait, prepare your three sugar solutions. For the first solution, pour 5 grams of sugar into 250ml graduated cylinder and add water up to the 250ml mark.
Send another person to get 2 healthy green plants of elodea 4. Put 2 elodea in each jar 5. Fill the both jars with water up to ¾ of the jar 6. Get a dropper and suck bromthymol blue into the dropper 7. Fill both jars each with 70 drops of bromthymol bblue 8.
If the concentration of sucrose is increased in the selective permeable bag, then the rate of the osmosis will also increase. MATERIALS AND METHODS In starting this experiment we worked in groups of four, we each filled four beakers with room temperature water. Then, got four different bags and tied one side on each end then filled them separately with different solutions that were: 0.0M, 0.25M, 0.5M, and 0.75M. After each bag was filled we made sure to take out all the excess air from the bags in which we tied the other end so the solution would not come out, allowing both sides of the bags to be tightly closed. The reason why we don’t want any leakage from the bags is so that this experiment would come out as accurate as possible.
Each tube contained a certain amount of glucose in order to distinguish a difference between each membrane first tube contained 0M of sucrose concentration and the second strip, 0.25M of sucrose concentration. The final two tubes contained 0.50M and 0.75 M of sucrose concentration, which were then tied up on both ends with pieces of string. After we secured all the tubes with strings at both ends, we filled up four beakers half way to the top with distilled water. We weighed each individual tube on an electronic balance and then we distributed them evenly among all four beakers. After we placed each tube in a
The preparation of the dilutions is a multi-step process in which the dilution is appropriate for a 250 ml sample of algae water. Chlor Brite: Dissolve 8 grams of the powder into 4 liters of tap water Remove 1 ml of this solution Add this to 1 liter of water Remove 1 ml of this solution to add to samples in the D group Power Powder Plus
The second experiment, procedure 1, combined [Co(NH3)5 (H2O)]Cl2 (0.0060M, 1.52g) and (25mL) of distilled water to an 125mL Erlenmeyer flask. The flask was gently heated (dial 5-6) and stirred until all the compound was dissolved. The heated solution was then vacuum filtered through a fritted funnel and the filtrate was cooled in an ice bath until the
MATERIALS AND METHODS In order to prove the hypothesis we needed to get materials together and follow a step by step procedure. First we grabbed four baggies and tied one end shut; we filled three baggies half way with .25M of sucrose solution, another with .50M and the third with .75M. The fourth baggy was filled with distilled water which made it our control group, all baggies had their loose ends tied hard. Once that was done we filled four beakers with about 15cml of distilled water. We then rinsed and dried each baggy.