What is the osmolarity of a potato?
We found that its osmolarity was 0.1M, which agree with our hypothesis that we thought that the osmolarity of the potato would have the same concentration as the .1M solution.
What is the molarity of a potato in sorbitol?
According to Clemson University, the molarity of a white potato is estimated between 0.24 and 0.31 when it is submerged in a sorbitol solution.
What is the meaning of molarity?
Molarity stands for the number of moles of a solute required to dissolve in one liter of a solution. The type of solution used will affect the molarity of the substance.
Which will have the least effect on the potato?
This hypothesis is based off the predicted outcome that smaller molarity concentrations will have the least effect on the potato. The more solute added to a solution decreases the concentration of water in most cases (Kosinski).
How do you find the molarity of a potato?
2:385:40Determining the Molarity of a Potato Core - YouTubeYouTubeStart of suggested clipEnd of suggested clipAt that point you're ready to calculate the percent change what you will do is take the final massMoreAt that point you're ready to calculate the percent change what you will do is take the final mass minus the initial mass divide it by the initial mass.
What is the molarity of a sweet potato?
Our data shows that the white potato had an approximate molarity of . 28 M and the sweet potato had an approximate molarity of . 50 M, confirming our hypothesis that the sweet potato had a higher sucrose concentration.
How do I calculate molarity?
The key to calculating molarity is to remember the units of molarity (M): moles per liter....To calculate molarity:Find the number of moles of solute dissolved in solution,Find the volume of solution in liters, and.Divide moles solute by liters solution.Oct 2, 2019
What is the salt concentration of a potato?
Conclusion: From my graph I can conclude that the internal salt concentration in a piece of potato is approximately 3.2 grams per litre.
What is the water potential of a potato in kPa?
Before carrying out the investigation I predicted that the water potential of the potato tuber cells would be within the range of minus 1280 kPa and minus 260 kPa.
Which potato has the highest natural sugar concentration?
Variation by Potato Type Waxier potatoes contain more sugars than other types of potatoes. For example, the sugar content in 100 grams of red potatoes is 1.29 grams and that of white potatoes is 1.15 grams, while russet potatoes only contain 0.62 grams of sugar per 100-gram serving.
What molarity means?
Molarity (M), or molar concentration, is the concentration of a solution measured as the number of moles of solute per liter of solution.Nov 1, 2021
What is the molarity of H2SO4?
Molarity of H2SO4 is 18 M.
Is molarity the same as molar mass?
Vocabulary. Molarity (M): otherwise known as the molar concentration of a solution, molarity is the moles of solute per liters of solution. Molarity can be expressed as the abbreviations mol/L, or more popularly, M. Molar mass: the sum of the atomic weights that make up a molecule.Feb 3, 2022
Are potatoes 80% water?
*The potato is about 80% water and 20% solids. *An 8 ounce baked or boiled potato has only about 100 calories. *The average American eats about 124 pounds of potatoes per year while Germans eat about twice as much. *In 1974, an Englishman named Eric Jenkins grew 370 pounds of potatoes from one plant.
What happen to potato soaked in water?
Water will move from an area of less salt to more salt (more water to less water), and so when the potato is placed in the saltwater, all the water that is inside the potato (yes, plants have a lot of water inside of them, that's what gives a plant it's structure) moves out by osmosis.
What happens if you put a potato in water?
Growing in Water The submerged portion of the potato will absorb water and act as a nutrient source for the growing plant, eventually developing roots under the water as well. A potato vine will begin growing from the sprouted eye as well.
Computing molar mass (molar weight)
To calculate molar mass of a chemical compound enter its formula and click 'Compute'. In chemical formula you may use:
Computing molecular weight (molecular mass)
To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets.
Definitions of molecular mass, molecular weight, molar mass and molar weight
Molecular mass ( molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Abstract
Students in Biology find it difficult to understand the concept of tonicity and osmolarity in a real time situation. In this investigation, several concentrations of sucrose were used to determine the osmolarity of a potato. It was found that the concentration of sucrose was close to 3.6 in the potato used showing that it was isotonic.
Introduction
Sucrose is a carbohydrate that is used for energy. Potatoes contain 1% fructose, glucose, and sucrose by weight [1]. That is a very small amount to how much weight it contains. Molecules are constantly moving and tend to move from a region of higher concentration to a region of lower concentration.
Figure 2. Effect of different molarities of sucrose solutions on mass of a potato
The potato cuboids placed into the sucrose solution with the molarities of 0.2 and 0.4 gained weight showing that this is a hypotonic solution because a hypotonic solution is a solution that contains more solutes on the outside than the inside which causes the water to move from outside the cell to inside the cell due to the low concentration of water in the cell.
Conclusion
The hypothesis was supported by the results. When the potato was in a hypotonic solution it gained weight while when it was in a hypertonic solution it lost weight to balance out the solute concentration. As for when it was isotonic, it gained no weight.
Cite this page
Determining the Osmolarity of a Potato. (2016, May 31). Retrieved from https://studymoose.com/determining-the-osmolarity-of-a-potato-essay
