0
What else can I help you with?
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.
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.
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!!:)
How do you make 0.1 Molar edta?
To prepare 0.1 Molar EDTA solution, dissolve 37.2 g of EDTA disodium salt dihydrate in 1 liter of distilled water. Adjust the pH to around 8 using NaOH pellets. Finally, adjust the final volume by adding more distilled water if needed.
How we will prepare 1 molar solution of liquids?
To prepare a 1 molar solution of a liquid, you need to dissolve one mole of the solute in enough solvent to make a final volume of 1 liter. Start by calculating the mass of the solute needed using its molar mass. Then dissolve this mass of solute in a volumetric flask with some solvent. Finally, add more solvent to reach the 1 liter mark on the flask and mix well to ensure homogeneity.
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.
What is the difference between a molar solution and a normal solution?
A molar solution is a solution with a known concentration expressed in moles of solute per liter of solution, while a normal solution is a solution with a known concentration expressed as gram-equivalents of solute per liter of solution. Molar solutions are commonly used in chemistry, while normal solutions are used more in analytical chemistry and chemical analysis.
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.
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
How can you prepare several different pH solutions from a 1 Molar stock solution of HCl?
To prepare several different pH solutions from a 1 Molar stock solution of HCl, you can dilute the stock solution with water to achieve the desired pH. You can use a pH meter to measure and adjust the pH as needed by adding either more stock solution or more water. Make sure to handle HCl with caution as it is a strong acid.
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.
How would you prepare a 1 mole solution of lactose?
Find out the molecular weight of LactoseAdd that many grams of Lactose into a 1000ml volumetric flaskMake up the volume to 1000ml with waterYour 1 Molar solution of Lactose is ready---------------The molar mass of lactose is 342,3 g/mol; the solubility of lactose is 216 g/L at20 0C. Consequently you cannot prepare a molar solution of lactose.
How will you prepare the 1 molar potassium acetate solution?
You have to dissolve 1.00 mol, that is 98.15 g CH3COOK (its molar mass being 98.15 g/mol), in upto 1.000 L.(Suggested procedure: dissolve 98.15 g CH3COOK in not more then 900 mL, homogenize and fill up to exactly 1.000 L by carefully adding the last millilitres water).
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.
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!!:)
How do you prepare a 2 molar salicylic acid solution?
To prepare a 2 molar salicylic acid solution, you would need to dissolve 17.5 grams of salicylic acid in enough water to make 1 liter of solution. First, measure out the salicylic acid using a balance, then add it to a beaker or flask with some water and stir until dissolved. Finally, add more water to bring the volume up to 1 liter, and mix well to ensure uniform concentration.
