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Which has more water potential a 0.6 molar solution or a 0.4 molar solution?
Wiki User
∙ 13y ago
Dunno, I need to know this too, but specifically, which will have a more negative water potential out of 0.6Molar and 1Molar solution!
I can't find the answer on the web :(
Wiki User
∙ 13y ago
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Is potassium nitrate more dense than water?
It depends on the Molarity of the solution. if the (mols x molar mass)/volume> 1, its more dense.
Water moves out of a cell if the cell is placed in a solution?
Hypertonic solution. To further elaborate my point, hypertonic solution is a solution which has less water potential and more solutes as compared to inside the cell. Osmosis is the movement of water from a region of high water potential to low water potential through a partially permeable membrane. Therefore, water leaves the cell into the solution. Hope this helps!!:)
What happens to a cell that is placed in a hypertonic hypotonic and isotonic environment?
An Animal Cell in hypertonic solution will look shriveled due to osmotic effects on the cell. the hypertonic solution means there is more water potential outside of the cell, water moves from a low water potential to a high water potential. Therefore the water diffuses out of the cell decreasing the volume bringing the cell membrane in making it look shriveled up.
Which number has a higher water potential -3 or -6?
-3 has more water potential
When some water evaporates from a sugar solution the solution becames...?
The solution become more concentrated in sugar.
Is potassium nitrate more dense than water?
It depends on the Molarity of the solution. if the (mols x molar mass)/volume> 1, its more dense.
Water moves out of a cell if the cell is placed in a solution?
Hypertonic solution. To further elaborate my point, hypertonic solution is a solution which has less water potential and more solutes as compared to inside the cell. Osmosis is the movement of water from a region of high water potential to low water potential through a partially permeable membrane. Therefore, water leaves the cell into the solution. Hope this helps!!:)
What is the new water potential of a plant cell of water potential 500kPa after immerse into pure water?
Water potential is the potential energy of water in a system (eg a solution or a cell) compared with pure water under the same conditions. The value of the water potential depends mainly on two factors: 1) The presence of dissolved solutes. Solutes dissolved in the water reduce the energy of the water molecules, and so lower the water potential. This happens because the solute molecules attract the water molecules and reduce their movement. The component of water potential due to solutes is called the solute potential of the solution. 2) The presence of an excess pressure, above that of normal atmospheric pressure. Pressure increases the movement of the water molecules and so increases their energy, thus increasing the water potential. The component of water potential due to pressure is called the pressure potential of the solution. The total water potential of a solution is the sum of the solute potential and pressure potential water potential = solute potential + pressure potential The pressure potential can be positive or negative. An additional pressure on the solution will be positive and increase the pressure potential. If the solution is subject to a reduced pressure (a negative pressure or suction) the pressure potential will be negative and will reduce the water potential. The solute potential is always negative and so always reduces the water potential. Pure water is given a water potential of zero (similar to the way in which the freezing point of water is given a value of 0o Celsius). So anything which reduces the energy of the water molecules (such as dissolving a solute) will reduce the water potential to below zero, and so will be negative. The movement of water depends on the difference in water potential between two systems eg two adjacent cells, or a cell and the surrounding solution. This difference is called the water potential gradient. Water will always move from the higher to the lower water potential ie down the water potential gradient. In osmosis, the two solutions involved are often at atmospheric pressure. In this case it is only the difference in solute concentration which determines the direction of water movement. Water moves from the dilute solution to the concentrated solution. The concentrated solution has a higher concentration of dissolved particles, and so has a lower solute potential than the dilute solution. Since the pressure potential is zero (no excess pressure), the water potential is equal to the solute potential. Water will therefore move from the higher water potential (ie the dilute solution) to the lower water potential (ie the more concentrated solution), down the water potential gradient. It is possible for the pressure potential to counteract the solute potential. For example, if a solute (eg salt) is added to pure water, the water potential will be reduced to a negative value. If the solution is then put under extra pressure eg in a syringe, the positive pressure potential can raise the total water potential above zero ie give it a positive value. This happens especially in plant cells, where the cell wall prevents an increase in volume of the cell. So if water enters by osmosis the extra water molecules cause the pressure inside the cell to increase. This intracellular pressure in a plant cell is called the turgor pressure. For more information see: http://en.wikipedia.org/wiki/Water_potential http://www.colorado.edu/eeb/courses/4140bowman/lectures/4140-07.html http://www.phschool.com/science/biology_place/labbench/lab1/watpot.html
What happens to a cell that is placed in a hypertonic hypotonic and isotonic environment?
An Animal Cell in hypertonic solution will look shriveled due to osmotic effects on the cell. the hypertonic solution means there is more water potential outside of the cell, water moves from a low water potential to a high water potential. Therefore the water diffuses out of the cell decreasing the volume bringing the cell membrane in making it look shriveled up.
Which is more concentrated one molar NaCl or one molal NaCl?
They are equivalent. Molal is now an obsolete, not recommended term.
Which has a higher water potential red blood cells or water?
Distilled water would have a higher water potential than a red blood cell because the formula for obtaining water potential is -iCRT, where i=ionization constant, C=molar concentration, R=pressure constant--usually 0.0831 liter bars/mole K, and T=temperature in Kelvins. Since distilled has a molar concentration of 0, the water potential would be 0. And a red blood cell would have a negative water potential because it does have some sort of molar concentration. Thus, distilled water would have a higher water potential because 0 is greater than a negative number. As a note, water always flows from areas of higher water potential to areas of lower water potential. Therefore, it is easy to imagine that water flows toward more concentrated solutions, meaning it would flow to the red blood cell. If distilled water flows to the red blood cell, then it must have a higher water potential than the red blood cell.
What happens to potato strip in dilute water?
This depends on the concentration of the salt solution. If the water potential of the salt solution is greater (less concentrated) than the cell sap of the potato cells, water would move into the potato cells, increasing the size of the potato strip. If the water potential of the salt solution is lower (more concentrated) than the cell sap of the potato cells, water would move out of the potato cells in the salt solution, decreasing the size of the potato strip.
The importance of water potential gradient in the uptake of water by plants and effects of osmosis in plant and animal tissus?
Water potential is the potential energy of water per unit volume relative to pure water in reference conditions. Water potential quantifies the tendency of water to move from one area to another due to osmosis, gravity, mechanical pressure, or matrix effects such as surface tension. Water potential has proved especially useful in understanding water movement within plants, animals, and soil. Water potential is typically expressed in potential energy per unit volume and very often is represented by the Greek letter Ψ.Water potential integrates a variety of different potential drivers of water movement, which may operate in the same or different directions. Within complex biological systems, it is common for many potential factors to be important. For example, the addition of solutes to water lowers the water's potential (makes it more negative), just as the increase in pressure increases its potential (makes it more positive). If possible, water will move from an area of higher water potential to an area that has a lower water potential. One very common example is water that contains a dissolved salt, like sea water or the solution within living cells. These solutions typically have negative water potentials, relative to the pure water reference. If there is no restriction on flow, water molecules will proceed from the locus of pure water to the more negative water potential of the solution.
What is the water potential of an open beaker full of pure water?
Pure Water has potential of 0.If more solute is added to it water potential falls-it becomes more negative
What do isotonic hypotonic and hypertonic deal with?
A hypertonic solution is one containing more solute, a hypotonic solution contains more water, and an isotonic solution contains equal amounts of solute and water. Whether a solution is hypertonic, hypotonic, or isotonic can determine what happens to the cell. In a hypertonic solution, solute will diffuse into the cell down the concentration gradient. In a hypotonic solution, water will move into the cell by osmosis down a water potential gradient, and in an isotonic solution nothing will happen because the concentration and water potential are the same both inside and outside the cell.
Which number has a higher water potential -3 or -6?
-3 has more water potential
Differentiate osmosis from diffusion?
Diffusion is the net movement of molecules from a region of high concentration to a region of lower concentration. Osmosis is the net movement of water through a partially permeable membrane, from a solution of less negative water potential, to a solution of more negative water potential. Both Diffusion and osmosis occur down the concentration gradient. Basically they are the same thing, but osmosis is the diffusion of water in solution, rather then gaseous diffusion. We use the term osmosis to differentiate between gaseous transport and water movement. hope it helps..
