In the last decade the extraction of natural gas from underground reservoirs has increased. Natural gas supplies 24% of the United States energy demand and is only expected to grow. Shale gas is natural gas that is found trapped in shale. Shale is sedimentary rocks that consist of clay minerals that have low permeability. Natural gas that is found in shale is buried in fractures below ground and must be extracted by hydraulic fracturing, also known as fracking [10]. One of the most recognized sites
contains a core that neither gains nor loses mass. This osmotic concentration would be the equivalent of the sap in the vacuole. As an extension to this investigation, I would run two experiments in parallel. All cores would be from the same potato, but one would run for an hour, as this one did and for the other the cores would be left in the solutions for longer, perhaps 24 hours, to establish if one hour is the end point of the osmotic diffusion.
How Osmosis In Potatoes Is Affected By Solution Concentration Aim To investigate how the concentration of a salt and water solution affects the rate of osmosis in a potato. Osmosis Osmosis is the passage of water from an area of high water concentration to an area of lower water concentration, through a partially permeable membrane (a membrane which allows small molecules like oxygen, carbon dioxide, water, ammonia, glucose etc to pass through, but does not allow larger molecules
liquid that is able to dissolve another substance, a solute, to form a solution. Water potential is a measure of the ability of a solution to give out water. Water potential (y) can be expressed as the sum of the solute potential (ys) and the pressure potential (yp). (y) = (ys) + (yp) The water potential of pure water is zero and all other solutions have a negative water potential. The greater the solute concentration, the more negative is the value for water potential. Background Information
Investigating the Factors that Affect Osmosis in Living Tissue Aim: To investigate the factors that effect osmosis in living tissue. Planning: Introduction Essentially, osmosis is the diffusion of water across a selectively permeably membrane. Osmosis is one of the ways by which substances enter and exit cells. Other ways include diffusion, the Donnan effect[1], solvent drag, filtration, endocytosis, exocytosis and active transport. All of these methods are necessary to provide
Membrane technology is arguably the most economical, innovative and environment friendly that can be applied in water and wastewater treating. History has shown that no other new technology has had so much positive effects in the last century. Due to its ability to solve many different water treatment problems it is the choice of many industries seeking to reuse their waste water and reduce their water footprint. Membranes work by providing barriers that permit or prevent the passage of materials
Experiment to Investigate Osmosis in Potatoes The aim of this experiment is to investigate the movement of water in and out of plant cells. The cells chosen for study will be taken from potato tubers. Firstly I will explain what osmosis is. Osmosis is the passage of water from a region of high water concentration through a semi permeable membrane to a region of low water concentration. This definition contains three important statements: a) It is the passage of water through a semi permeable
The purpose of our lab is to construct the models of cells using the dialysis tubing to stimulate the selectively permeable nature of the plasma membrane, observe the effects of osmosis on a model cell and to be able to predict the effect of solute concentration on osmosis. The independent variable in this lab is the amount of sucrose concentration. The dependent variable is the mass and the constant variable in our lab is the fluid sucrose concentration. In this lab one safety guideline to follow
number of factors, which are given names; solute potential ([IMAGE]), Pressure potential (+ Matrix potential =0 normally)([IMAGE]) and water potential ([IMAGE]). Solute potential ([IMAGE]): this refers to the amount of substance dissolved in the cytoplasm. This effects water movement because water always moves from a less concentrated medium to a more concentrated medium. Pressure potential ([IMAGE]): this refers to the pressure exerted by the cell walls. In a plant, the cell will fill with water
Investigate the Cell Sap Concentration of Solute in a Potato Chip using Osmosis Aim The aim of the experiment is to investigate the cell sap concentration of solute in a potato chip using osmosis and produce a figure informed by the investigation as to what this is. Background Information A factor that effects how much water moves into a cell is the solute concentration within it. Water moves in and out of cells by diffusion, this diffusion is called osmosis. Osmosis is the diffusion of water
The Effect of Salt Concentration on the Weight and Length of a Potato Chip I am trying to find out if and how different concentrations of salt solution affect the weight and length of a potato chip in a certain amount of time. This will involve me performing the experiment, measuring the potato cylinders weight and length before and after the experiment putting results in a table producing charts showing the differences or similarities in results analysing the results and finally evaluating
The Investigation of Osmosis in Potato Chips Osmosis will occur across a semi-permeable membrane whenever there is a difference between the water concentrations on the two sides of the membrane, and when this happens to cells they will either become turgid if water flows into them, or plasmolysed if water flows out of them, and therefore changing their mass. Aim: To investigate how changing concentration in a sugar solution affects the rate of osmosis in potato chips. Prediction:
The Effects of Osmosis on Potato Cells Introduction The aim of this investigation is to see the effect of varying concentrations of glucose solution on the amount of osmotic activity between the solution and a potato chip. An investigation into Plasmolysis in onion cells was undertaken prior to this experiment, in order to gain some knowledge of osmosis to enable a hypothesis to be formed. Preliminary Work and Scientific Knowledge =========================================
Investigating Whether the Strength of a Salt Solution Affect Osmosis in a Potato Factors ======= Factors that could affect the experiment: - · Temperature of water · Type of potato · Amount of solution · Amount of time the potato is in the solution Factors that I will change in my investigation: - · Percentage of salt in solution Preliminary Equipment ===================== 7 Beakers (250ml) 7 strengths of sugar solution (100ml of each strength) as follows
Solute Potential of Cell Sap of Plant Epidermal Cells Aim: To estimate the solute potential of a plant tissue. Results: Molarity of Solution Plasmolysed Cells Percentage of Cells That Were Plasmolysed .3M 1/70 .01% .4M 0/70 0% .5M 5/70 7% .6M 12/70 17% .7M 29/70 41% 1.0M 56/70 80% It must be taken into account, that the experiments procedure was changed. This could have had a great affect on the results. The part of the procedure
Investigate the Osmotic Point of Equilibrium in a Potato The following Passages are information which I have managed to find when researching the topic of Osmosis: - The cell membrane controls the movement of substances going into and out of the cells. The cell therefore controls the Chemical composition of the internal environment of the cell. It does this in two ways; Passive Process - this does not require energy Active Process - this does require energy to occur This works in principle which
water potential depend on two things, Osmotic potential (due to presence or absence of solutes) and pressure potential (due to turgor pressure). To work out water potential you use this equation Water potential = solute potential + pressure potential Ψ = Ψs + Ψp In my experiment the water potential equals the solute potential (solute potential is always negative), as the pressure potential is negligible. However pressure potential is pressure exerted when water enters a cell and
around. Step 3: Q5. The salt that was placed on the egg turned into ‘sweat’ like beads on the egg. Q6. There is a higher water concentration inside the egg, causing the water to travel through the egg to the salt. The salt creates osmotic pressure on the water molecules in the egg. This causes the ‘sweat’ like beads on the egg. Salt Egg Water [IMAGE][IMAGE] Step 4: Q7. Before: [IMAGE] [IMAGE] Water Sultanas [IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE]
of solute concentration on osmosis in potatoes. This is to find the equivalent osmotic potential. [IMAGE] PREDICTION: Osmosis is the movement of water particles from a high concentration to a low concentration through a partially permeable membrane. Osmosis happens when a partially permeable membrane allows small water particles to pass in or out towards a low water concentration. To reach an equivalent osmotic potential the concentration of water molecules has to be equal on either side
Investigating the Osmotic Values of Chinese Radish and Potato Cores Osmosis is the movement of water from an area of high water potential (Ψ) to an area of low water potential through a selectively permeable membrane. The diagrams above shows that only the water molecules can move quickly through the pores in the selectively permeable membrane. The sugar molecules (glucose arde too big to move through the gaps withease. Since there is a higher water potential on the left-hand side more water molecules