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What is the weight average molecular weight of the compound in question?
The weight average molecular weight of the compound is the average of the molecular weights of all the molecules in the sample, weighted by their relative abundance.
Number-average molecular weight of a polypropylene is 1000000 gmol Compute the number-average degree of polymerization?
Number-average degree of polymerization = (Number-average molecular weight of polymer) / (Molecular weight of repeating unit) For polypropylene, the molecular weight of the repeating unit is 42 g/mol. Thus, degree of polymerization = 1000000 g/mol / 42 g/mol = 23809.52.
Which of the following has same equivalent and molecular weight?
If two substances have the same equivalent weight, it means the number of equivalents per mole is the same for both substances. Therefore, the molecular weight of these substances would also be the same, as equivalent weight is derived from the molecular weight and valence of the substance.
What is the relationship between molecular weight and density in a substance?
The relationship between molecular weight and density in a substance is that generally, substances with higher molecular weights tend to have higher densities. This is because heavier molecules are more tightly packed together, leading to a higher mass per unit volume, which results in a higher density.
Compute the degree of polymerization of polystyrene?
The degree of polymerization(n) is the ratio between Molecular weight(M) and the molar mass of the repeating unit in a polymer(m). M=n*m The molar mass(m) of the monomer (styrene) is 104.15 grams/mol if you are given a Molecular weight, just devide by m, and you've got it!
What is the weight average molecular weight of the compound in question?
The weight average molecular weight of the compound is the average of the molecular weights of all the molecules in the sample, weighted by their relative abundance.
Would a substance of high molecular weight diffuse faster than a substance of lower molecular weight?
No, substances with higher molecular weight typically diffuse more slowly than those with lower molecular weight due to larger size and greater interaction with surrounding molecules. Smaller molecules have less resistance to movement and can diffuse more easily across a membrane or through a solution.
Number-average molecular weight of a polypropylene is 1000000 gmol Compute the number-average degree of polymerization?
Number-average degree of polymerization = (Number-average molecular weight of polymer) / (Molecular weight of repeating unit) For polypropylene, the molecular weight of the repeating unit is 42 g/mol. Thus, degree of polymerization = 1000000 g/mol / 42 g/mol = 23809.52.
Which of the following has same equivalent and molecular weight?
If two substances have the same equivalent weight, it means the number of equivalents per mole is the same for both substances. Therefore, the molecular weight of these substances would also be the same, as equivalent weight is derived from the molecular weight and valence of the substance.
What is a molecule of low molecular weight capable of reacting with identical or different molecules of low molecular weight to form a polymer?
This is a catalyst.
What is the relationship between molecular weight and density in a substance?
The relationship between molecular weight and density in a substance is that generally, substances with higher molecular weights tend to have higher densities. This is because heavier molecules are more tightly packed together, leading to a higher mass per unit volume, which results in a higher density.
Does an increase in molecular weight speed up molecular movement?
no relation iz between molecular weight and movement which iz a function of temperature only.
How do you convert molecules to gram?
You first divide the amount of molecules by avagadros number (6.022x10^23) to find out how many moles you have. Then you find out the molecular weight of the compound. You multiply the number of moles by the molecular weight to give you your weight in grams.
Compute the degree of polymerization of polystyrene?
The degree of polymerization(n) is the ratio between Molecular weight(M) and the molar mass of the repeating unit in a polymer(m). M=n*m The molar mass(m) of the monomer (styrene) is 104.15 grams/mol if you are given a Molecular weight, just devide by m, and you've got it!
What is the molecular weight of a liquid sample?
The molecular weight of a liquid sample is determined by the mass of its molecules, typically expressed in grams per mole (g/mol). It can be calculated by adding the atomic weights of all the atoms in a molecule based on its chemical formula. To obtain the molecular weight of a liquid, one may also use techniques such as mass spectrometry or vapor pressure osmometry. The molecular weight is crucial for understanding the sample's properties, behavior in reactions, and interactions with other substances.
How molecular weight and sedimentation constant is related to each other?
Molecular weight and sedimentation constant are related through the Svedberg equation, which states that the sedimentation constant (S) is inversely proportional to the molecular weight of a molecule. This means that larger molecules with higher molecular weights will have lower sedimentation constants, while smaller molecules with lower molecular weights will have higher sedimentation constants.
Does the molecules of mercury is heavier than molecule of water?
If you understand what molecular weight (MW or FW) means, then look at the molecular weight of one molecule of mercury (Hg2) and compare that to the molecular weight of an H2O molecule.Which is heavier?
