For example, dissolved gases that add unpleasant odors and taste to the water may be removed if activated carbon (finely divided charcoal) is included in the filter. I will measure both the mass and the length of the potato pieces because I think that osmotic action may cause each of these to change, and this way I will be able to plot two separate graphs. Brine can also be diluted with effluent from a wastewater treatment plant or with cooling water from a power plant or other industrial user, although these approaches have their own drawbacks that must be addressed. I found I had one anomalous result, that when the solution was.4M, circled on my graph. Gases discharged from coal- and oil-burning power plants, for example, usually contain solid particles that cause air pollution and acid rain. Additionally, monitoring of existing and proposed desalination plants is crucial to improving our understanding of the sensitivity of the marine environment and helping promote more effective operation and design to minimize ecological and biological impacts in the future. I will expect the potato that have been in the weakest solution to have gained mass and length, and become turgid (feeling hard and 'stiff' to the touch). I think this will happen because I expect a high amount of osmosis to be occuring in this situation, assuming that the solution is of higher water concentration than that inside the cell.
Anyone who has ever prepared foods in a kitchen has probably seen one of the simplest forms of filtration.
AP Biology, essay, questions The following is a comprehensive list of essay questions that have been asked on past AP exams.
I think this can only research papers on anorexia be because of mistakes made with the measuring either before or after; if I were to do this experiment again, I would make sure that that could not happen. Others make use of finely powdered materials, such as diatomaceous earth. These include: Concentration of solution Mass of potato piece Length of potato piece Surface area of potato piece Temperature of solution Effects of evaporation Type of potato Amount of time left in solution The turgidity of the potato piece to begin with The variable which. Repeat with 2 more cylinders from the same potato. The wall stretches, but does not break, and eventually the pressure inside the cell is so high that no more water can enter the cell and the cell reaches a point where it cannot stretch anymore; we say it is turgid. The lower part of the drum is submerged in the liquid to be separated and a vacuum is maintained within the drum. A number of variations on this concept are commercially available. These systems can be categorized according to the fluids on which they operate (gaseous or liquid) and the driving force that moves fluids through them (gravity, vacuum, or pressure).
The questions are organized according to units. Unit 1 (Basic Chemistry and Water). The unique properties (characteristics) of water make life possible on Earth.