Your search returned 305 essays for "solute":
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The Effect Of Solubility On The Solubility Of The Solute And Solvent

- Solubility is the property of a solid, liquid or gaseous chemical solute to dissolve in a solid, liquid or gaseous solvent to form a solution [1]. The solubility of a particular substance is dependent on the physical and chemical properties of both the solute and solvent [1]. The temperature, pressure and pH of the solution also has an effect on the solubility. The extent of the solubility of a certain solute in a particular solvent is measured as saturation, where adding more solute will not increase the concentration of the solution and will precipitate the excess in the solution....   [tags: Solubility, Solvent, Solution, Chemistry]

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The Solute Concentration of a Potato

- The Solute Concentration of a Potato To find out what the solute concentration of a potato is, this shall be done by finding out the effect of Osmosis on a potato. Prediction: That if there is more water outside the potato than inside, the potato will increase in size. If however there is less water outside the potato than within, then I shall expect the potato to shrink in size. I think this because of the laws of Osmosis. Osmosis is the diffusion of water through a partially permeable membrane from a high concentration gradient, to a low concentration gradient....   [tags: Papers]

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The Effect of Solute Concentration on Osmosis in Potatoes

- The Effect of Solute Concentration on Osmosis in Potatoes AIM: to find out the effect 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 of the partially permeable membrane....   [tags: Papers]

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The Effect of Solute Concentration on the Rate of Osmosis

- The Effect of Solute Concentration on the Rate of Osmosis Aim: To test and observe how the concentration gradient between a potato and water & sugar solution will affect the rate of osmosis. Introduction: Osmosis is defined as, diffusion, or net movement, of free water molecules from high to low concentration through a semi-permeable membrane. When a substance, such as sugar (which we will be using in the experiment we are about to analyse), dissolves in water, it attracts free water molecules to itself, and in doing so, stops them from moving freely....   [tags: Papers]

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Explanation of How Exchange of Solute Occurs Within Capillary Beds

- Microcirculation describes the movement of blood through small vessels responsible for replenishing organ tissue with oxygen and nutrients while at the same time removing carbon dioxide and other waste products (Berne & Levy, 2001). Hormones involves in signalling are also move through capillaries (Levick, 2010). This process is accomplished by a network of blood vessels (figure 1) such as arterioles which carry oxygenated blood from the heart to the capillaries where solute exchange occurs (Berne & Levy, 2001)....   [tags: arterioles,microcirculation,capillaries,vessels]

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The Effect of Changing Solute Concentration on Osmosis in Potato Tissue

- The Effect of Changing Solute Concentration on Osmosis in Potato Tissue Aim The aim of the investigation is to find out the effect of changing solute concentration on osmosis in potato tissue. Prediction I predict that if the solute solution is more concentrated than the potato, the potato chip with the more water potential will lose water, so if the potato chip is placed into a dilute solute solution, the potato will gain water. Here's the example- if the original cells is 5g then and placed into a diluted solute solution the mass will raise to 7g....   [tags: Papers]

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Solute Potential of Cell Sap of Plant Epidermal Cells

- 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....   [tags: Papers]

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Investigate the Cell Sap Concentration of Solute in a Potato Chip using Osmosis

- 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 molecules from a place with a high water potential or high concentration of water to a low water potential or low concentration of water....   [tags: GCSE Biology Osmosis Coursework]

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The Movement of Water and Solutes in Plants

- The Movement of Water and Solutes in Plants During the process of osmosis, water molecules move from an area that is hypotonic to an area that is hypertonic. A hypotonic area is one in which has less solute and a hypertonic area is one which has more solute. Plant cells, such as the ones in the epidermis and cortex regions of the roots of the plant, all have living contents, which are enclosed by a cell surface membrane and a thick, quite inelastic cellulose cell wall. The cell wall has special properties, which help the cells resist during the osmotic uptake of water....   [tags: Biology Essays]

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The Effect Of Concentration On The Concentration Of A Solvent

- Colligative properties are the physical changes that happen when you put a solute in a solvent. The ratio of the number of solute particles are a contributing factor, but not the types of particles. There are four main properties that are affected by this solute mass ratio, which include depression of freezing point, elevation of boiling point, lowering in vapor pressure, and osmotic pressure. Every kind of liquid basically has a freezing point, they just vary in temperature. Water for instance, has a freezing point of 0℃ or 32℉....   [tags: Water, Gas, Freezing-point depression, Solution]

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The Gum Benzoin Tree

- INTRODUCTION Benzoic acid was originally obtained from the gum Benzoin tree, and that’s where its name is derived. Benzoic acid (C7H6O2) is a weak carboxylic acid (contains an OOH functional group), which consists of an aromatic ring and is naturally used as a food preservative, therefore its capable of slowing down/halting the growth rate of bacteria that inhibit most foods. Benzoic acid is an organic molecule and in its crystalline (solid) state exists as a white powder, basically looks like tiny white crystals....   [tags: carboxylic acid, charcoal, ]

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The Extraction Procedure For Separate The Acid, Base And Neutral Components Of The Solution Into Separate Phases

- The extraction procedure was undertaken in order to separate the acid, base and neutral components of the solution into separate phases. This procedure was executed using different solvents with different polarities in order to extract the different solutes. The recrystallization procedure was undertaken in order to purify the solutes further by removing any contaminants. This was done by using hot solvent and then allowing it to cool, which causes the compound to precipitate out. This creates purified crystals that have less other associated compounds....   [tags: Solubility, Solvent, Solution, Acetic acid]

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Migration of Atoms: Basics of Diffusion

- ... The control of heart beat through hormonal diffusion and digestion of food through enzymatic action are some of the examples. Further the role of diffusion in pharmaceutical applications is undisputed through the drug therapy curing a specific portion of body. B1.2 Basics of Diffusion The process of diffusion involves two components: (i) solvent is the medium in which atoms of similar or different kinds are to be diffused and (ii) solute are the atoms of one or more kinds which are to be diffused into the environment of solvent....   [tags: enzymatic action, non-uniform composition]

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Diffusion Is A Spontaneous Movement

- Diffusion is a spontaneous movement that occurs when substances move from a higher concentration of molecules to that of a lower concentration in order to eliminate their gradient (Simon 83-84). Eventually, diffusion causes equilibrium to occur. Equilibrium means that both sides of the gradient are balanced. Therefore, when equilibrium occurs, there is no longer a gradient because a gradient is an unequal distribution of a solute. This means that a gradient has potential energy, for equilibrium happens spontaneously....   [tags: Diffusion, Osmosis, Cell wall, Water]

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How the Dialysis Tubing Compares to the Cell Membrane

- In life, it is critical to understand what substances can permeate the cell membrane. This is important because the substances that are able to permeate the cell membrane can be necessary for the cell to function. Likewise, it is important to have a semi-permeable membrane in the cell due to the fact that it can help guard against harmful items that want to enter the cell. In addition, it is critical to understand how water moves through the cell through osmosis because if solute concentration is unregulated, net osmosis can occur outside or inside the cell, causing issues such as plasmolysis and cytolysis....   [tags: permeation and osmosis]

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The Freezing Point Of P Xylene

- The freezing point of p-xylene was calculated as 13.29C after averaging the data that appeared on Graph 1 once the temperature leveled off. With this value, the Tf for each trial was able to be calculated through Equation 1, which led to Kf being calculated in Equation 2. Both equations were able to be used given that the measurements were in terms of molality, which is not temperature dependent. After completing calculations, the average Kf of the three trials of the p-xylene and toluene solution was computed as as 4.56(C/m) as shown in Table 1, however, the theoretical value was slightly lower than calculated, 4.3(C/m)....   [tags: Solvent, Solubility, Melting point]

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Determining the Water Potential of Potato Tubers Using Gravimetric anc Chardakov Techniques

- Determining the Water Potential of Potato Tubers using Gravimetric and Chardakov Techniques 1. INTRODUCTION: Water potential (W) is the measure of free-energy status of water in plant cell, which is the driving force governing the movement of water into and out of the plat cell and affect various metabolic activities (O’Leary, 1970). Water potential is depends on different solute concentrations, pressure and matrix a particle; measured in Mega Pascal’s (MPa) and written as: W = s + p + m In plants dissolved solutes such as ions, sugars, proteins, amino acids and other substances decrease the availability of free energy and induce solute potential (S) , having a negative value....   [tags: the measure of free energy status]

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P Xylene And Toluene Solution

- The freezing point of p-xylene was calculated by taking the average calculated Kf of the three trials of the p-xylene and toluene solution. The average of the three trials was computed as 4.56(C/m) as shown in Table 1, however, the theoretical value was slightly lower than calculated, 4.3(C/m). This resulted in a 6.04% error as shown in Equation 5; possible causes of error could have resulted from adding too much solute or too little solvent, then the calculations would have been off given that the solution was not dilute enough....   [tags: Solvent, Solubility, Melting point, Solution]

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A Demonstration Of Deshelled Eggs

- A Demonstration of Deshelled Eggs in Solutions Bailey Showers Fellow experimenters: Laura Diaz Villaquiran Jacob Hopper Muhammad Pardesi Introduction: Osmosis is the diffusion of water across the plasma membrane of a cell. Basically, this is when the molecules move from an area of higher concentration to an area of lower concentration. A solute is the smaller part of a solution that is dissolved by a solvent. A solvent dissolves the solute, which then forms a solution, which is a mixture of two or more substances....   [tags: Osmosis, Concentration, Solution, Tonicity]

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Investigating Factors Affecting the Solubility of an Unknown Powder in Water

- Investigating Factors Affecting the Solubility of an Unknown Powder in Water Aim: To investigate the effect of temperature on an unknown powder's solubility. Prediction: As the temperature increases so will the solubility of the powder. I think that the temperature and solubility will be directly proportional - so that at temperature doubles so will the solubility of the powder. Hypothesis: I think this because my scientific theory says that: Molecular solids, like sugar, and ionic solids, salts, both dissolve in water....   [tags: Papers]

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Experiment on the Functions of Passive Transport in Red Blood Cells

- Introduction Because of cell's composition, the plasma membrane has to be selective to its materials that passes through it. In other words, the plasma membrane is semi-permeable that it allows nutrients to enter the cell but keeps out undesirable substances. This property allows the cell to segregate its inner cytoplasm from the external environment. There are two different ways to pass though this membrane: active and passive transport. Active and passive transport are both biological process that move oxygen, water and nutrients into cells and remove waste products; however, these two processes happen in a different mechanism....   [tags: osmosis, water, membrane]

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Literature Review: Prediction of Henry’s Law Constant

- Introduction An informal definition of Henry’s Law states that the solubility of a compound in a solvent is directly proportional to the partial pressure of the compound in the vapour phase, at low partial pressures. In a plot of concentration dissolved vs. partial pressure, the slope of the curve is the Henry’s Law Constant (HLC). The system is taken to be at equilibrium; that is the Gibbs free energy is at a global minimum so the macroscopic properties of the system are static. Unfortunately this definition is often too simplistic to be used in most practical applications for reasons which will be explained later....   [tags: Henry’s Law Constant]

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Diffusion Of Diffusion And Osmosis

- Diffusion and Osmosis Substances can only move across a cell membrane by active transport or passive transport. Active transport moves molecules from a low concentration to a high concentration area using the body’s energy. Passive transport moves molecules from a high concentration to a low concentration area without using any energy. Furthermore, the main process of passive transport is diffusion, which involves the movement of dissolved particles through a semi-permeable membrane from that of a high concentration to a low concentration....   [tags: Concentration, Osmosis, Solution, Chemistry]

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The Effect of a Concentration of Water on the Mass of a Potato

- The Effect of a Concentration of Water on the Mass of a Potato Aim: My aim is to find the percentage change of mass when a small piece of potato is placed in to molar sucrose solution Apparatus: * Molar sucrose solution 0.0 - 0.5 * Potato * Cutting board * Knife * Weighing machine * Glass test tube * Glass test tube holder Plan: - ======= My plan is too find the percentage change of mass of a small piece of potato when placed in to molar sucrose solution by using osmosis....   [tags: Lab Report]

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Experiment: To Find Out if it is Always Possible for Substances to Dissolve

- Soluble or Insoluble Purpose: To find out if it is always possible for substances to dissolve. Hypothesis: I think the possibility of a solute dissolving, all depends on the type of solvent.(E.g. Water-pure substance international solvent, soap-already a solution). I think because water is a pure substance, it will be easier for solutes to dissolve in it. The thickness of the solvent may affect the dissolving process of the solute but maybe not by much. Materials:  4 transparent plastic cups or beakers  pen or marker  4 labels  measuring spoons  water  vegetable oil  salt  sugar  4 stir sticks Procedure: 1....   [tags: water, solvent]

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A Soluble Solution: Science Fair Project

- A SOLUBLE SEPARATION My science fair project is to find the solubility of salt and sand.Solubility is the measure of how much solute can dissolve in a given solvent at a given temperature.A solute is the part of a solution that is dissolved by a solvent.A solvent is the part of a solution that is usually present in the largest amount and dissolves a solute.A solution is a mixture containing a solvent and at least one solute that has the same properties throughout; a mixture in which one substance is dissolved in another....   [tags: solubility, temperature, chemical]

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The Diffusion Of Water Across The Semi Permeable Membrane

- Introduction Osmosis is the diffusion of water across the semi-permeable membrane from a region of low solute concentration to an area of high solute concentration in order to equalize the level of water in each region. Hypertonic, hypotonic and isotonic solutions are involved in this process. Water tends to move from a high to low concentration area, towards a higher solute concentration is hypertonic. When there is more solute outside of a cell, the cell is hypotonic, and when there is more solute inside a cell, the cell is hypertonic....   [tags: Osmosis, Concentration, Solution, Measurement]

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The Process Of Sweating And Drinking Minimal Amounts Of Water

- a. Considering the fact that Marc has both been sweating and drinking minimal amounts of water, Marc is now dehydrated. This means he has less than the required amount of water for his body to complete the processes necessary to maintain its health. As stated in the question, the process of sweating causes the loss of more water than solutes. This means that as the level of water decreases, the level of solute concentration will increase, creating a change in the water to solute ratio. b. As Marc is dehydrated, he would be experiencing a water imbalance throughout his body....   [tags: Bacteria, Cell wall, Cell, Eukaryote]

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Osmosis through a semipermeable membrane

- Osmosis through a semipermeable membrane: effects of solution concentration on the weight of deshelled eggs Solutions are liquid monophase homogenous mixtures comprised of a solvent - usually, though not always, the prevalent substance and solute, the less prevalent substance. A dissolved substance will be distributed uniformly throughout the solution, at molecular level. The quantity of solute per unit of solution volume or mass is called concentration. This quantity can be expressed as mass per mass of solution (percentage, g of solute per 100 g of solution) or amount per volume (molarity, mol/dm3)....   [tags: effects, solution concentration, weight]

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What Different Groups Who Drank Bottles Of Fluid For Each Kg Of Body Weight

- 1. Compare the different groups who drank 7.5ml of fluid for each kg of body weight. Which group had the highest average urine production rate. Why. o The group with the highest average urine production rate of 7.5 mL of fluid for each kg of body weight was the diet caffeine free group. Diet caffeine free uses NutraSweet instead of glucose as the sweetening agent. NutraSweet causes high filtrate osmolality, which decreases reabsorption and moves water from out of the tissue into the urine, increasing urine output....   [tags: Concentration, Mass, Solution, Water]

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The Human Body and Water: Dehydration

- It is a Sunday afternoon and you are doing laundry in your two-story house. This involves running up and down the stairs from your bedroom on the second floor to the laundry room on the first floor. carrying a very heavy basket filled with laundry. After a few trips you notice you are getting tired, light headed, and your mouth is dry and sticky; you wonder why that is. When you exert yourself physically you are using more water to carry the glycogen that creates more energy, and you sweat to cool down your body; so you need to drink more fluid to rehydrate yourself....   [tags: glycogen, water, nutrients]

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Cell membrane

- In life, it is critical to understand what substances can permeate the cell membrane. This is important because the substances that are able to permeate the cell membrane can be necessary for the cell to function. Likewise, it is important to have a semi-permeable membrane in the cell due to the fact that it can help guard against harmful items that want to enter the cell. In addition, it is critical to understand how water moves through the cell through osmosis because if solute concentration is unregulated, net osmosis can occur outside or inside the cell, causing issues such as plasmolysis and cytolysis....   [tags: Osmosis, Dialysis Tubing]

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Determination of Molecular Weight of a Protein by Gel Filtration

- Introduction Purification of proteins is an essential technique that provides biochemists with the ability to obtain a sample that contains a specific protein of interest. In order to purify a protein biochemists typically obtain the specific extract, precipitate the protein using ammonium sulfate, preform gel filtration, and lastly run ionic and affinity chromatography. Understanding the use and methods of the different chromatography techniques is of crucial importance in order to successfully purify and conclude the molecular weight of an unknown sample using elution volumes of molecular weight standards....   [tags: Determination of Molecular Weight]

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An Investigation of Factors Affecting the Rate of Osmosis

- An Investigation of Factors Affecting the Rate of Osmosis Introduction Osmosis is the movement of water molecules across a semi permeable membrane from a region of high water concentration to a region of low water concentration. [IMAGE] A semi permeable membrane is a membrane with very small holes in it; they are so small that only water molecules can pass through them. Bigger molecules such as glucose cannot pass through it. In actual fact water molecules pass both ways through the membrane, but because there are more water molecules in the high concentration region than the other there is a steady net flow into the lower concentration region....   [tags: Papers]

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Understanding Clinical Solutions

- Introduction Medications: the part of medicine that deals with your health from outside. Millions of clinical solutions with different purposes are used in hospitals and domestics houses. The effectiveness of these solutions are going to depend on their chemistry. If an average adult takes a gummy vitamin complex supplement the vitamin in take will be almost insignificant. If that same adult takes a vitamin complex supplement tablet the intake of the vitamin will affect the body. What makes the difference....   [tags: Medications]

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Solution Text Notes

- Chemistry Textbook Notes: Solutions Chapters 13 & 14: LH 1. Define soluble, solution, solvent, solute, suspension, colloid (p.395–398) Soluble- capable of being dissolved solvent0 the dissolving medium in a solution solute- the substance dissolved in the solution suspension- a mixture in which the particles in the solvent are so large that they settle out unless the mixture is constantly stirred or agitated colloid- a mixture consisting of particles that are intermediate in size between those in the solutions and suspensions forming mixtures known as colloid dispersions 2....   [tags: essays research papers]

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Diffusion Of Diffusion And Osmosis

- Diffusion and Osmosis Shown In Solutions INTRODUCTION This lab, title Diffusion and Osmosis, was centered around the diffusion across a cellular membrane and how exactly materials move and diffuse in concentrations. Both diffusion and osmosis are forms of movement that are part of passive transport dealing with cell membranes. Diffusion is where the solutes move from an area of high concentration to a low concentration. Water goes through the cell membranes by diffusion. Osmosis is specifically the movement of water through membranes....   [tags: Osmosis, Concentration, Cell wall, Cell membrane]

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The Stages of Molecules in a Cell

- ... 2. Fructose will exhibit net diffusion into the cell. 3. Glucose will exhibit net diffusion out of the cell. 3. Size of the cell, concentration gradient of the cell, carrier protein of the membrane influence whether a molecule will be able to pass through a biological membrane. If the molecule is too large, it will require some kind of transport protein that is surrounded in the plasma member to allow it to pass through. Large molecules typically carry charges, so that may also affect the process....   [tags: osmosis, filtration, transport]

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How Various Mechanisms By Which Substances Cross The Cell Me

- Homeostasis is essential to the cell’s survival. The cell membrane is responsible for homeostasis. The membrane has a selective permeability which means what moves in and out of the cell is regulated. Amino acids, sugars, oxygen, sodium, and potassium are examples of substances that enter the cell. Waste products and carbon dioxide are removed from the cell. All of these substances cross the membrane in a variety of ways. From diffusion and osmosis, to active transport the traffic through the cell membrane is regulated....   [tags: essays research papers]

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The Effect of Concentration of Water in a Saline Solution On the Process of Osmosis in a Potato

- The Effect of Concentration of Water in a Saline Solution On the Process of Osmosis in a Potato Aim The aim of this experiment is to find out what effect the concentration of water in a saline solution has on the process of osmosis in a potato. Osmosis is a specialised case of diffusion involving water diffusing through a semi-permeable membrane. Semi-permeable membranes are very thin layers of material that allow some things to pass through them but prevent other things from passing through....   [tags: Lab Report]

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The Effect of Different Solutions on Potato and Cucumber Strips

- The Effect of Different Solutions on Potato and Cucumber Strips Plan ---- Introduction Plants in the soil have their roots in a dilute solution of various mineral ions. Sometimes, the soil they are planted in gets flooded with sea water (which has an average of 0.3 sodium chloride concentration). In these cases the roots are observed to wilt and become flaccid. In my experiment, I will simulate this situation using potato and cucumber strips, placing them in different solutions (sodium chloride, glucose and sucrose) at different molar concentrations....   [tags: Papers]

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Water Relations in Two Plant Tissues

- Water Relations in Two Plant Tissues Results: Table 5 Table to show the sucrose concentration and water potential of each tissue. The sucrose solution was extrapolated from graph 1, which shows the percentage change of mass of the tissues when immersed in the different sucrose solutions. A line of best fit was drawn, where the line of best fit intercepts the x-axis (concentration of sucrose solution) is the sucrose concentration of the tissue because at this point there is no mass loss of gain (read off of y-axis)....   [tags: Lab Report]

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Investigating The Molar Mass Of A Substance

- The overall purpose of this lab was to determine the molar mass of an unknown. There are various methods for determining the molar mass of a substance such as freezing point depression, boiling point elevation, osmotic pressure, and vapor pressure lowering. These methods are often referred to as colligative properties, which can only be applied to solutions. By definition, one of the properties of a solution is a colligative property if it depends only on the ratio of the number of particles of solute and solvent in the solution, not the identity of the solute....   [tags: Melting point, Freezing-point depression]

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Investigating the Effect of Osmosis on Equal Length Potatoes

- Investigating the Effect of Osmosis on Equal Length Potatoes Aim The aim of this experiment is to measure the loss of sugar (sucrose) from potatoes, which have been affected by Osmosis. In this experiment, I have Dependent and Independent variables. My dependent variables will be; · Type of potatoes · Mass of potatoes · Length of potatoes · Time left in Sucrose solution My Independent variable will be; · Molar amount Background Information Osmosis is the net movement of water across a selectively permeable membrane driven by a difference in solute concentrations on the two sides of the membrane....   [tags: Papers]

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Active and Passive Transport of Molecules Through Plasma Membrane

- ... i The plasma membrane has a phospholipid bilayer which separates the inside (the cytoplasm) and the outside (extracellular fluid and lipid-soluble solutes) of the cell. The fact that the plasma membrane monitors the passage of molecules based on size and solubility constitutes it as semi-permeable. Diffusion can be categorized as either simple diffusion or facilitated diffusion. A similarity between simple and facilitated diffusion is that they are both passive processes and travel from areas of higher concentration to region of lower concentration....   [tags: cells, diffusion, filtration]

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Determining the Water Potential of Potato Tuber Cells

- Determining the Water Potential of Potato Tuber Cells I will carry out an investigation that will enable me to determine the water potential of the tested potato tuber cells. Water Potential is the measurement of the tendency of water molecules to move from one place to another. (Ridge 1991) Water always moves down the water potential gradient, therefore moving from an area of higher water potential to an area of lower water potential. Equilibrium is reached when the water potential in one region is equal to the water potential in another region....   [tags: Lab Report]

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Investigation of Osmosis in Plant Tissue

- Investigation of Osmosis in Plant Tissue Aim To investigate factors which affect the rate of osmosis. The main factors which affect osmosis are: Pressure Temperature Surface area Solute Concentration Plant Tissue We will be investigating solute concentration as this is the easiest factor to measure and will give us the most accurate results. We will mainly investigate the different rate of osmosis when potato cells are placed in solution with different solute concentrations....   [tags: Papers]

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Speeding Up the Dissolving Process

- Speeding Up the Dissolving Process 1.Planning Problem: What speeds up the dissolving process. Hypothesis: I think these factors will affect the dissolving process: vTemperature at which the reaction is carried out. v Particle size of the solute. v Stirring of the solution. However in my investigation, I am investigating temperature and the particle size of the solute. Prediction From using my scientific knowledge and understanding, if the particle size of the solute is smaller, the particles can easily diffuse with the solvent's particles and fill in the spaces between them....   [tags: Papers]

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Surface Chemistry of Silica

- In order to gain strong insight into the surface chemistry of silica we have perform a thorough literature search. Our goal is to identify the pioneer research performed on silica and silica supported catalyst. Particular interest lies in silica-water-cobalt and silica-alcohol-cobalt systems. This study is both on macro and micro level so that a complete theoretical base can be established. From this theoretical knowledge, key areas to look upon will be identified and a design of experiments will be established....   [tags: Chemistry]

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Osmosis Through A Semi Permeable Membrane Using Dialysis Bags

- In this experiment we took dialysis bags and filled them with various sucrose solutions and put them in water over a period of about 90 minutes to look at the osmosis in each bag and the tonicity of each environment the bags were in. We also took potato pieces and submerged them into various sucrose solutions to determine the ideal state of tonicity for plants and the osmosis that occurred over a period of time. The final results for the first exercise was that 0.8M sucrose solution gained the most mass and that it was hypertonic to its environment....   [tags: Osmosis, Semipermeable membrane, Diffusion]

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Cell Membrane And Its Effect On Cell Membranes

- Transport across cell membrane involves molecules getting in and out of cell, water is one of the major components of cells, we can find water in cytoplasm and in cell sap, this water contains many breaks up substances and these substance plus water enter and leave the cell through the cell membranes. The development of a cell membrane could allow some materials to pass while blocking the passage of other molecules which is the major evolution of the cell. Transport across cell membranes also occurs by actively or passively....   [tags: Osmosis, Cell, Cell wall, Diffusion]

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Chemical Makeup And Acid Base Reactions

- Exaction is where a solute is transfer from solvent A to solvent B (Ketcha, 47). A possible method to do this is changing the chemical makeup by using acid-base reactions (Ketcha, 42). The acid-base reactions change the solubility of the solute. If the original solute is ionic and is dissolvable is solvent A but not B, then adding the acid HCl would change the solute to its conjugate acid. The resulting acid would then be soluble in B but not A. To revert the change, just add the base NaOH to the solution....   [tags: Solvent, Solubility, Chemistry, Solution]

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The Effect Of Ethanol And Methanol On Lipid Bilayers

- The results from this experiment are consistent with the hypothesis posed. The results from the experiment of others also confirmed that the data obtained from the current experiment are consistent. The solutes that had higher lipid solubility penetrated the erythrocyte plasma membrane quicker than those with a lower lipid solubility. An experiment to test the effects of ethanol and methanol on lipid bilayers was done by Patra et al. in 2006 that further validated the results obtained from the current experiment....   [tags: Cell membrane, Lipid bilayer, Chemistry, Solvent]

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lab on solutions

- I Introduction A. Purpose: The purpose of this experiment was to determine if the temperature of water effects the rate at which salt dissolves. B. Hypothesis: If the temperature of the water increases then the rate at which the salt dissolves will increase. C. Science Concepts: Solution- one substance dissolved in another Solute- the substance that gets dissolved Solvent- the substance that the solute gets dissolved in Characteristic property- a property that is unique to a substance, does not change depending on the amount of a substance, and can identify the substance Physical change- when a substance changes physically but is not chemically effected Solubility- the amount of a...   [tags: essays research papers]

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Comparing the Solubility's of Copper Sulphate, Sodium Chloride and Potassium Nitrate

- Comparing the Solubility's of Copper Sulphate, Sodium Chloride and Potassium Nitrate Comparing the solubility's of copper sulphate, sodium chloride and potassium nitrate Background Information Molecular solids (sugar) and ionic solids (salts) both dissolve in water. However, they both dissolve in different ways. The intermolecular forces holding molecules of sugar together are relatively weak so when sugar is placed in water these bonds are broken and individual C12H22O11 molecules are released into solution....   [tags: Papers]

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Investigating the Amount of Sag in Potato Chips Due to Osmosis

- Investigating the Amount of Sag in Potato Chips Due to Osmosis Analysis A clear trend can be identified when looking at the graph that shows the class means, the higher the molarity of the solution, the more the potato chip which has been soaked in that solution sags. This trend is shown as a result of osmosis and the movement of water in and out of the potato cells. When the potato chip has been left in pure water its cells have become turgid, and as a result of this has a very small amount of sag is measured....   [tags: Papers]

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Investigating the Water Potential of Celery Cells

- Investigating the Water Potential of Celery Cells Aim === I will be investigating the water potential of celery and to find out which solution will be isotonic with the celery cells, in other words equilibrium between the two no water will leave the cell, or enter. I will do this by following this method. Method 1. Cut a 5 cm length of celery stem 2. Cut through the grooves to divide the stem into thin strips 3. Dry the cell sap from the strips using a paper towel 4....   [tags: Lab Report]

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Measurements Of Weights, Volumes And Ph

- Measurements of Weights, Volumes and pH: Concentration, expressed as molarity, is defined as the amount of molecules or ions in a fixed volume of a particular substance. In order to make the desired concentration of a solution, the solute is weighed with the help of a balance or scale and then completely dissolved into the solvent; it then goes through a volume adjustment to ensure the desired concentration is achieved. The concentration of the solution can be represented in many ways, by percentage of weight, percentage of volume or parts per million (ppm)....   [tags: Acid dissociation constant, PH, Acid]

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Investigate the Osmotic Point of Equilibrium in a Potato

- 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 diffusion in which molecules and ions in a solution move from an area of high concentration to an area of low concentration resulting in the equal distribution of molecules....   [tags: GCSE Biology A2 A-Level Coursework]

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There are Three Main Types of Sports Drinks: Isotonic, Hypotonic and Hypertonic

- Sports drinks are used to supplement the loss of electrolytes, water and energy after exercise, helping the athlete recover quicker by replacing the key ionic-substances back into the body. They are designed to give the athlete an equal amount of carbohydrates and fluids to provide an almost instant rehydration and refuel during physical activity. This essay will explain the purpose of the contents of sports drinks and their uses in the human body. There are three main types of sports drinks; Isotonic, Hypotonic and Hypertonic....   [tags: carbohydrates and fluids]

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The World 's Population And Its Effects On The Earth

- As the world’s population increases at an astounding pace, our mother Earth is getting very crowded and congested. Our natural resources are being overused and the land available for life is decreasing day by day. The world is realizing this issue and the best way to solve it is find more land for habitat. This is where our next door neighbor comes into play, Mars. After earth, Mars, the beautiful red planet, is the planet with the most hospitable climate in the solar system. So hospitable that it may once have harbored primitive, bacteria-like life....   [tags: Mars, Water, Temperature, Mars Exploration Rover]

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Bilayer Tablet Technology in Medical Treatment

- An acute or chronic illness for decades is being clinically treated through delivery of drugs in patients in the form of some pharmaceutical dosage forms like tablets, capsules, liquids, creams, pills, aerosols, injectable and suppositories. An ideal drug delivery system is such that it provides the required drug amount with in a short duration and also should maintain the steady level of drug concentration throughout the dosing period [1]. However any conventional dosage form behaves as per its type either immediate release or sustained release....   [tags: Pharmaceuticals, Patients]

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Defining The Problem And Selecting Variables

- Mani Kallupurackal Biology 2 IB I. Design Aspect 1: Defining the Problem and Selecting Variables Research Question/Problem: Does the amount of concentration of sucrose in water effect the amount of water passed through dialysis tubing. Variables: Dependent- The amount of water gained in the separate dialysis tubing Independent- The solutions with different concentrations of sucrose in the dialysis tubes which are 0M, .2M, .4M, .6M, .8M, and 1M concentrations of sucrose. Other relevant variables that need to be controlled- The temperature of the water; the amount of water, 250mL, in the beakers where the tubes are put in....   [tags: Diffusion, Osmosis, Concentration, Solution]

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The Physics Of Atoms Are Everything

- Atoms are everything, literally. Every physical thing in existence is comprised of atoms. “Atoms are the basic building blocks of matter that make up everyday objects… There are 90 naturally occurring kinds of atoms. Scientists in labs have been able to make about 25 more.” (Thomas Jefferson National Accelerator Facility - Office of Science Education). “Atoms are made out of three basic particles: protons(carry a positive charge), neutrons (carry no charge), and electrons (carry a negative charge and circle the nucleus).” (Thomas Jefferson National Accelerator Facility - Office of Science Education)....   [tags: PH, Acid, Oxygen, Atom]

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A Comparison of the Water Potential of Potato and Sweet Potato Tubers

- A Comparison of the Water Potential of Potato and Sweet Potato Tubers Aim The aim of this experiment is to compare the water potential of two different plant tissues, potato and sweet potato tubers, by measuring the gain or loss of water when samples of the tissue are placed in a range of concentrations of sucrose solutions. Background information Osmosis is the movement of water molecules from a region of their higher concentration to a region of their lower concentration through a semi permeably membrane....   [tags: Biology Lab Report]

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Experiment to Investigate Osmosis in Potatoes

- 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 membrane b) It is the passage of water from a region of high water concentration c) It is the passage of water to a region of low water concentration....   [tags: GCSE Biology Osmosis Coursework]

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Principles of Diffusion and Osmosis

- Diffusion and Osmosis Across Dialysis Tubing By Jasper Lee, Leo Zhao, Oliva Skopas, Alistair Dobson, and Alex Bell 11/15/13 Purpose: The purpose of this experiment was to demonstrate the principles of diffusion and osmosis, two processes that are essential for life, by using dialysis tubing (a semi-permeable membrane) to simulate the cell membrane and observe said processes. Introduction: Diffusion is the movement of molecules from a higher concentration to a lower concentration. Imagine you had a glass of water and put a drop of food coloring in....   [tags: Dialysis Tubing, Case Study]

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The Rate Of Osmosis Decreases

- The Rate of Osmosis Decreases as The Internal and External Sodium Concentrations Approach Equilibrium Introduction Osmosis is a special case of diffusion, involving the movement of water into and out of cells (LeCornu, 2014). The water moves from an area of lower solute concentration to an area of higher solute concentration across a semipermeable membrane. The membrane allows smaller molecules like water to pass through but prevents larger organic or charged molecules from leaving the cell. The solution with a low concentration is referred to as a “hypotonic” solution, and the one with a higher concentration is called “hypertonic” (Khan, 2015)....   [tags: Sodium chloride, Concentration, Osmosis]

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The Function And Structure Of The Plasma Membrane

- The overall purpose of the experiments in this lab was to introduce the function and structure of the plasma membrane, describe the workings of diffusion and osmosis, and to demonstrate how different factors such as particle size, temperature, and space of diffusion area affect the rate of diffusion. With the results from the experiments, it can be concluded that all of the factors listed do affect diffusion, and there may be many more than are unaccounted for. Through the osmosis experiment, it was clear that water moved into the cell due to a lack of water and an excess of solute; in the environment, there was an excess of water and a lack of solute....   [tags: Osmosis, Cell, Diffusion, Central nervous system]

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The Formula of Succinic Acid

- The Formula of Succinic Acid Succinic acid is a diprotic, which means it donates two protons per molecule. Succinic acid can be completely neutralised by sodium hydroxide. The indicator most suitable for this experiment is phenolphthalein, it is colourless in acids and pink in alkalises. The half way stage is about pH 9.3, this is when it will either change from colourless to a very pale pink or from pink to colourless. To determine the relative formula mass of succinic acid I am going to do a titration against sodium hydroxide....   [tags: GCSE Chemistry Coursework Investigation]

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Water Potential Investigation

- Water Potential Investigation Aim: To determine the water potential of potato cells and sweet potato cells during the process of osmosis. (Only water molecules can pass through by the process of osmosis) Osmosis is the movement of water particles from a low region of water concentration to a high region of water concentration through a partially permeable membrane. A partially permeable membrane is known as the barrier which allows certain substances to move across, such as water molecules which move through freely, but prevents the movement of other substances, like sucrose....   [tags: Biology Lab Report]

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Membranes : An Integral Function

- Membranes play an integral function in trapping and securing metabolic products within the borders of a cell within an aqueous environment. Without a selectively permeable border surrounding sites of anabolic function, potential useful products of this metabolism would simply diffuse away in the aqueous environment contained within and surrounding the cell. However, securing metabolites within the cell also comes with a price of not being able to acquire potentially useful compounds from the surrounding environment....   [tags: Cell membrane, Protein, Membrane protein]

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Factors Affecting Osmosis

- Factors Affecting Osmosis The aim of this experiment is to investigate the factors affecting osmosis. I have chosen to investigate the effect varying concentration of sucrose solution has on the amount of osmotic activity between the sucrose solution and a plant cell. The plant cell I have chosen to use is a potato tuber from which I plan to cut potato chips of equal length which I will place in test tubes filled with varying concentrations at equal volumes of sucrose solution....   [tags: Papers]

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Young Woman's Death by Ingesting Exstasy

- ... Ultimately, the tonicity of a solution describes the way water will flow into and out of a cell after being placed in that solution. If the cell has the same concentration of non-penetrating solutes as the solution, the solution is isotonic with no net movement of water into or out of the cell. If the cell has a higher concentration of non-penetrating solutes than the solution, the solution is hypotonic with water moving into the cell. If the cell has a lower concentration of non-penetrating solutes than the solution, the solution is hypertonic with water moving out of the cell....   [tags: sodium, swelling, patient]

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Investigating the Movement of Osmosis through a Selectively Permeable Membrane

- Investigating the Movement of Osmosis through a Selectively Permeable Membrane My aim for this experiment is to see the percentage increase decrease and results of potato tissue's mass difference, when placed in different concentrations of sugar solutions. This investigation would expect to have 3 different variables, Independent, which you can change, the thing that I will be changing in this investigation for the factors affecting osmosis, is the concentrations of the solution that changes the mass and investigate osmosis with potato tissues....   [tags: Papers]

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Investigate the factors affecting the rate of Osmosis

- Investigate the factors affecting the rate of Osmosis Planning Osmosis is the diffusion of water from a lower concentration of solute to a higher concentration of solute, through a partially permeable membrane. In a high concentration of water the amount of solute (e.g. sucrose) is low. This could be called a weak or dilute solution. In a low concentration of water the amount of solute is high. This could be called a strong or concentrated solution. When a partially permeable membrane divides two such solutions, the water will move from the area of high concentration to the area of low concentration until both sides are equal....   [tags: GCSE Biology Osmosis Coursework]

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Finding the Water Potential of Potato Cells

- Finding the Water Potential of Potato Cells Aim: Our aim was to discover the water potential of potatoes cells using different concentrations of sucrose solution Science: Osmosis is 'the movement of water molecules from a region of higher water potential to a region of lower water potential through a semi-permeable membrane' www.s-cool.co.uk 'Water can move between cells (unligninified) freely as the cell walls are permeable. However its movement is controlled by a number of factors, which are given names; solute potential ([IMAGE]), Pressure potential (+ Matrix potential =0 normally)([IMAGE]) and water potential ([IMAGE])....   [tags: Biology Lab Report]

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Water Lab Report

- Water is a charged or polar molecule (H+ - O- - H+) that is always moving across cell membranes. Scientists theorize that this is possible because it is such a small molecule or because there are special gap or pores that allow water movement through the cell membrane. The predominant direction of water flow is determined by the concentration of the solutes (non-water molecules) inside and outside of the cell. Water molecules will show a new movement from an area of higher water concentration (& lower in solutes) to an area of lower water concentration (& higher in solutes)....   [tags: Lab Report]

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An Investigation Into Rates of Reaction

- An Investigation Into Rates of Reaction Aim: A study of the effect of changing the concentration of a solution on the rate of reaction. Prediction: The effect of changing the concentration of a solution, on the rate of a reaction. A concentrated solution can be made of dissolving a large amount of solute in a small amount of solvent. A dilute solution can be made by dissolving a little solute in a large amount of solvent. [IMAGE][IMAGE][IMAGE] A concentrated solution A dilute solution Table of results: Expt No Total Volume Concentration of sodium thiosulphate Volume of dilute hydrochloric acid Time 1st attempt (s) Time 2nd attempt (s)...   [tags: Papers]

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Why Gas Chromatography Is Used For Analytical Purposes

- Gas chromatography is widely used for analytical purposes in the chemical world to separate and analyse volatile compounds. It is mostly widely known as being paired with a mass spectrometer as, whilst it is a useful technique for testing purity and separating and quantifying compounds, it is less useful for definitive characterisation or identification. In this technique, a sample, which must consist of sufficiently volatile liquids or solids, is injected through a septum into a heated port, which causes the components to rapidly evaporate....   [tags: Gas chromatography, Chromatography, Gas, Helium]

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