what is the relationship between the rate of diffusion and molecular weight?
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Molecular weight will affect the rate of diffusion. All other things being constant, lighter weight molecules will move faster or diffuse faster that heavier molecules.
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The particle size affects the rate of diffusion by only allowing molecules that can fit through the barrier of the cell membrane. The molecular weight of the molecule can affect passage through the membrane because of the size they carry. Larger molecule are not able to pass through.
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Diffusion is faster at higher temperatures because the gas molecules have greater kinetic energy. ... Graham's Law states that the effusion rate of a gas is inversely proportional to the square root of the mass of its particles.
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Molecular weight is a measure of the sum of the atomic weight values of the atoms in a molecule. Molecular weight is used in chemistry to determine stoichiometry in chemical reactions and equations. Molecular weight is commonly abbreviated by M.W. or MW.
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During diffusion the molecules move from the region of high concentration to that lower. ... [Should be noted, permeability is a kind of diffusion from polymer film or layer which is porous.
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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. Simple diffusion permits the passage of only small and nonpolar molecules across the plasma membrane.
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Diffusion vs. "Bulk flow" is the movement/flow of an entire body due to a pressure gradient (for example, water coming out of a tap). "Diffusion" is the gradual movement/dispersion of concentration within a body, due to a concentration gradient, with no net movement of matter.
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Originally Answered: What is the difference between molecular weight and molecular mass? Molecular mass is the mass of a single molecule, often expressed as the sum of the constituent sub-atomic particles mass. Molecular weight is the mass of a mole of a given molecule.
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The relation between its density and the rate of diffusion of a gas can be represented by Graham's law which states that "The rate of diffusion of a gas is inversely proportional to the square root of its density under given conditions of temperature and pressure."
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What is the general relationship between the concentration and the rate of a forward reaction? Rate is greater when reactant concentration is greater.
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The differences between osmosis and diffusion it that diffusion refers to the movement of any chemical from one place to another, whereas osmosis exclusively refers to the movement of water across a membrane. also diffusion is the movement of molecules (solute or particles).
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Mass of the molecules diffusing: Heavier molecules move more slowly; therefore, they diffuse more slowly. The reverse is true for lighter molecules. Temperature: Higher temperatures increase the energy and therefore the movement of the molecules, increasing the rate of diffusion.
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The motion of molecules is through the semi-permeable membrane in osmosis, whereas in diffusion motion is direct and does not require a semi-permeable membrane. Osmosis undertakes in liquid medium only, whereas the process of diffusion undertakes in any medium (solid, liquid and gases).
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Explanation: The density D is calculated by: D=mV . The relationship between the mass m and the molecular weight MM is the following: n=mMM⇒m=n×MM , where, n is the number of mole of the substance in question.
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Increase the rate of diffusion. Describe the difference between the rate of diffusion seen for sodium and urea. Urea diffused slowly because it is larger than sodium.
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Passive transport moves across a concentration gradient, or a gradual difference in solute concentration between two areas. Simple diffusion is the diffusion of small, uncharged, or hydrophobic molecules from an area of high concentration to an area of low concentration across the cell membrane.
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Factors That Affect the Rate of Dissolving A: The rate of dissolving is influenced by several factors, including stirring, temperature of solvent, and size of solute particles.