what is the difference in the concentration of a substance from one location to another?
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A concentration gradient is the difference in the concentration of a substance from one location to another. Molecules diffuse down their concentration gradient—that is, from a region of higher concentration to a region of lower concentration.
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In simple diffusion, the molecules can pass only in the direction of concentration gradient. In facilitated diffusion, the molecules can pass both in direction and opposite of the concentration gradient.
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Concentration: Concentrations provide students exposure to subject matter through a series of focused courses within a given area of study. Specialization: Specializations provide students with in-depth knowledge in a given area of expertise leading to potential career opportunities within the specified field of study.
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4 Answers. Concentration is any measurement of the quantity of a solute that is present per unit of solution (in general, there are exceptions like moLality, which measures the number of moles of solute per kilogram of solvent). ... In the older literature, this quantity was often called molarity.
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There is a relationship between concentration and absorbance; the higher the concentration of a substance in a solution, the greater the amount of light it will absorb, assuming that the wavelength is an absorbable one for the substance.
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Mass percent differs from volume percent, as only mass is an additive quantity. The mass of the solution is the sum of the components. Volume, on the other hand, isn't always additive, as molecules of the solute will fit into open spaces between molecules of solvent, resulting in less volume than expected.
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The concentration of an acid is a measure of the amount of available acid ions dissolved in a solvent. Concentration can be measured in moles, parts per million or percentage. The concentration is a ratio of the solute to solvent content of a solution.
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Diffusion is the movement of one specific molecule from a high concentration area to a low concentration one. Filtration is the movement of a fluid (mixture of several molecules) from a region of high pressure to a region of a low pressure.
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No both are different in percent composition we have to calculate the percentage of element present in a molecule. while in mass percentage we have to calculate the mass in grams of solute dissolved in 100 gram of solution.
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The partition coefficient generally refers to the concentration ratio of un-ionized species of compound, whereas the distribution coefficient refers to the concentration ratio of all species of the compound (ionized plus un-ionized). In the chemical and pharmaceutical sciences, both phases usually are solvents.
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Concentration gradients. About Transcript. A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower concentration, until they are evenly spaced.
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Concentration is the spread of objects in a given area, density is the frequency of objects in a given area,and pattern is the arrangement of objects in a given area.
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molarity: The concentration of a substance in solution, expressed as the number moles of solute per liter of solution. concentration: The relative amount of solute in a solution.
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Since diffusion moves materials from an area of higher concentration to the lower, it is described as moving solutes "down the concentration gradient." The end result of diffusion is an equal concentration, or equilibrium, of molecules on both sides of the membrane. At equilibrium, movement of molecules does not stop.
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Concentrated and dilute refer to the concentration of an acidic or basic substance in a solvent. ... 16 M HCl is more concentrated than a 0.5 M solution of the same acid. Strong and weak refer to the ability of an acid or base to dissociate. A strong acid will dissociate completely in water to form hydronium ions.
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Summary – Concentration Cell vs Chemical Cell To be precise, a concentration cell is a type of galvanic cell. The key difference between concentration cell and chemical cell is that in concentration cells the composition of two half cells is similar whereas in chemical cells the compositions may or may not similar.
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Concentration of solutions. A solution forms when a solute dissolves in a solvent . The concentration of a solution is a measure of how 'crowded' the solute particles are. The more concentrated the solution, the more particles it contains in a given volume .