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Are the rates of absorption and diffusion constant for all molecules?
Meganash85
no, the rates are different depending on the size of the molecule, the permeability of the membrane, the concentration gradient etc etc.
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∙ 16y ago
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Why diffusion rates of liquids are much less than diffusion rates of gasses?
Liquids diffuse at a slower rate than do gases because they have much less kinetic energy.
Describe 2 properties of an exchange surface that would facilitate rapid diffusion rates?
Exchange surfaces with rapid diffusion rates have several properties. These surfaces would have a high gradient on one side and active channels for diffusion.
What influences diffusion of ions across the membrane?
distance involved =diffusion at short distances occurs at a greater rate than diffusion at long distances area involved= diffusion over short distance occurs at a greater rate than diffusion over long distances Barriers=thicker barriers slow down rates of diffusion
What factors the rates of dffusion?
Temperature, initial concentration, and the medium in which diffusion takes place (solid, liquid, or gas).
Radiometric dating is possible because the rates of decay of radioactive isotopes .?
Are constant
What happens in diffusion if the temperature is raised?
At higher temperatures, atoms and molecules have more kinetic energy, and they will diffuse more easily. Diffusion rates are proportional to temperature. The hotter it is, the higher the diffusion rates we will see.
What has the author A PB Maasdorp written?
A. P.B Maasdorp has written: 'The application of the Etters diffusion equation to the rates of absorption of chromium by dyed and undyed wool'
How does temperature effect diffusion rates?
Temperature and diffusion rates are usually linearly proportional. As temperature increases diffusion rate also increases and vice versa. In most cases, diffusion rate will reach 0 after saturation or the maximum possible temperature.
Why diffusion rates of liquids are much less than diffusion rates of gasses?
Liquids diffuse at a slower rate than do gases because they have much less kinetic energy.
How does temperature affect rate of diffusion?
Faster diffusion will take place if the surroundings are warmer. Increase in temperature means an increase in molecules' speed (kinetic energy). So the molecules move faster and there will be more spontaneous spreading of the material which means that diffusion occurs more quickly.
Rates of absorption of medication are important. In what order would methods of absorption be arranged from fastest to slowest?
Answer is A. injection, oral, topical
Rates of absorption of medication are important in what order would methods of absorption be arranged from fastest to slowest?
Answer is A. injection, oral, topical
Alcohol is absorbed in the bloodstream with minutes How does a full stomach affect absorption rates?
A full stomach reduces the rate of alcohol absorption.
What factor increase rate of absorption of drug?
If you want just one factor, body weight could be it. Heart rate can also affect absorption rates. Muscle to fat ration can affect absorption. Whether you have recently eaten or drank water can be a factor. Alcohol can also affect absorption rates. Pick one I guess.
Describe 2 properties of an exchange surface that would facilitate rapid diffusion rates?
Exchange surfaces with rapid diffusion rates have several properties. These surfaces would have a high gradient on one side and active channels for diffusion.
Why is rate of diffusion faster in gases?
In liquid, there is less space to move so collisions are more frequent between the molecules causing a slower diffusion rate. The opposite happens in gases. There is more space in gases. As a result, there are less collisions between the molecules causing a faster diffusion rate. Other factors that may have an affect on diffusion rates are temperature, mass of the molecule, volume/surface area, and medium used.
Why did whole milk move?
The whole milk moves because of diffusion.The molecules of milk diffuse thorugh the water as in simple diffusion, molecules diffueses from where it is more concentrated to where it is less concentrated to where it is less concentrated (diffusing down its concentration gradient). This leads to dynamic equilibrium; the solute molecules of mile continue to cross the membrane but at equal rates in both directions. Diffusion is a spontaneous process, needing no input of energy. No work must be done to move substances down the concentration gradient.
