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Pressure is a statistical mechanic variable, representing the force exerted on a unit surface by a body that is composed by a huge number of particles, sufficiently great to apply statistical methods to average the fluctuating force exerted in time due to the interaction of individual particles with the surface.
A molecule is not composed by a sufficient number of particle generally, and, more important, the chemical bonds composing it gives to the molecule an ordered structure, so that pressure cannot be rigorously defined talking about molecules.
In some application, when dealing with solutions of very big molecules, like proteins or polymers chains, the interaction of these big molecules with the solvent, for example water, is modelled as the interaction of a body constituted by several rigid sphere bonded together (the molecule) with a continuous background medium (the solvent). This approximation, that is called implicit solvent approximation, is allowed by the fact that the solvent molecules are much smaller than the solute molecules. In this context it is possible to say that the solvent exert a pressure on the molecule surface, that naturally depends on many parameters like temperature, density of the solution, and so on, besides the nature of solvent and solute.
This is however a simpling model, that is used only because frequently a fully molecular model, where both solvent and solute are represented as molecules populations, is too hard to be solved.
What else can I help you with?
What is the term used to describe the spread of molecules throughout the area?
Epitome spreading is the act of molecules self spreading. It can also be called mimicry. This is when molecules seem to mimic other molecules, but are replicating themselves.
The diagram shows the same type of molecules in area A and B with the passage of time some molecules move from area A to B this movement is the result of the process of?
The movement of molecules from area A to area B over time is the result of the process of diffusion. This process occurs as molecules naturally move from an area of higher concentration (A) to an area of lower concentration (B) until equilibrium is reached. Diffusion is driven by the random motion of molecules and does not require any energy input.
Movement of molecules from an area?
The movement of molecules from an area of higher concentration to an area of lower concentration is called diffusion. This process occurs spontaneously and is driven by the random motion of molecules. Diffusion helps to establish equilibrium and is essential for various biological processes.
What term refers to the movement of molecules from a higher concentration to an area of lower concentration?
Diffusion, a form of passive transport, is the movement of molecules from an area of greater concentration to an area of lower concentration. Osmosis is a special case involvement the movement of water from an area of higher concentration of water molecules to an area of lower concentration of water molecules. It takes place in all three states of matter-Solids, liquids and gases.
What happens when the number of water molecules is greater in one area than another area?
If the number of water molecules is greater in one area than another, water will flow from the area with more water molecules to the area with fewer water molecules until equilibrium is reached. This process is known as osmosis, which helps to balance the concentration of water across different areas.
Describe the characteristics of the winter climate of the northern mountain of Pakistan?
highpressure , dry wind erc
Diffusion is the movement of molecules from?
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.
What is the term used to describe the spread of molecules throughout the area?
Epitome spreading is the act of molecules self spreading. It can also be called mimicry. This is when molecules seem to mimic other molecules, but are replicating themselves.
The diagram shows the same type of molecules in area A and B with the passage of time some molecules move from area A to B this movement is the result of the process of?
The movement of molecules from area A to area B over time is the result of the process of diffusion. This process occurs as molecules naturally move from an area of higher concentration (A) to an area of lower concentration (B) until equilibrium is reached. Diffusion is driven by the random motion of molecules and does not require any energy input.
What kind of passive transport happens when molecules move from a area where there more molecules to an area where there are fewer?
Diffusion is the word you're looking for.
What is diffusion in cells?
Diffusion in cells is the process by which molecules move from an area of high concentration to an area of low concentration. This movement occurs naturally due to the random motion of molecules and does not require energy input from the cell. Diffusion plays a crucial role in transporting essential nutrients, gases, and signaling molecules across cell membranes.
What is active trasportation?
active transportation is the movement of molecules from a less crowded area to a more crowded area. passive transportation is the movement of molecules from a more crowded area to a less crowned area.
Which terms refers to the movement of molecules from an area of higher concentration an area of lower concentration?
Diffusion, a form of passive transport, is the movement of molecules from an area of greater concentration to an area of lower concentration. Osmosis is a special case involvement the movement of water from an area of higher concentration of water molecules to an area of lower concentration of water molecules. It takes place in all three states of matter-Solids, liquids and gases.
Is osmosis the movement of molecules from an area of high concentration to an area of lower concentration or movement of molecules from an area of low concentration to an area of higher concentration?
Osmosis is the movement of solvent molecules from an area of lower solute concentration to an area of higher solute concentration through a semi-permeable membrane, in order to equalize the concentration on both sides.
When molecules move from an area of high concentration to an area of low concentration they move with the?
When molecules move from an area of high concentration to an area of low concentration, they move with the concentration gradient. This movement is known as passive transport and does not require the input of energy.
Do molecules tend to move into area where there are more molecules?
Molecules tend to move into areas where there are less molecules. This is called diffusion and can happen with or without energy.
The spread of molecules throughout an area?
This is known as diffusion, where molecules move from an area of higher concentration to an area of lower concentration until they are evenly distributed. This process occurs naturally due to random kinetic movements of the molecules.
