Calculate the molecular weight of an ethylene molecule with a degree of polymerization of 500.
given that
degree of polymerization Xn =500
the molecular formula of ethylene = c2H4
the molecular weight of ethylene =M=2[12.01 g/mol]+4[1.008 g/mol] =28.052 g/mol
the degree of polymerization Xn = Mn/m
therefore the average molecular weight Mn=Xn*m
=500*28.052=14026 g/mol
Calculate the molecular weight of an ethylene molecule with a degree of polymerization of 500.
(1 point) Determine the degree of polymerization of polypropylene with a number-average molecular weight of 845000 g/mol Degree of polymerization =
Find the degree of polymerization for polyethylene with an number average molecular weight of 500,000 g/mol.
Find the degree of polymerization for polyethylene with an number average molecular weight of 500,000 g/mol
Find the degree of polymerization for polyethylene with an number average molecular weight of 500,000 g/mol
The monomer seen below is called ethylene. Through addition polymerization it can be made into polyethylene, which goes by the abbreviation PE. Determine the degree of polymerization (DP) of a PE polymer with a molecular weight of 158900 g/mol Number DP- 1589
7. (19 points) The number average molecular weight of polypropylene is 1,5 Calculate the degree of polymerization. 00,000 g/mol.
4) Complete the following table: Mechanical Properties Effect of: Molecular Weight (degree of polymerization) of a thermoplastic Side Groups Bonding (secondary) i.e. H-bonds Crystallinity Name: Crosslinking Drawing
Molecular weight data for some polymer are tabulated.
Determine:
a) The number-average molecular weight
b) The weight-average molecular weight
c) What is the number-average degree of polymerization for this
polymer?
d) What is the weight-average degree of polymerization for this
polymer?
Side note: Please
consider the monomer C3H6
Molecular weight data for some polymer are tabulated. Determine: The number-average molecular weight The weight-average molecular weight What is the number-average degree of polymerization for this polymer? What is the weight-average degree...
Calculate the molecular weight of two macromolecules: the first is a polybutadiene, and the second is a polyisoprene. If both possess a degree of polymerization of 1000, comment on the differences in molecular weight.
4 (20 Points) Calculate the number-average molecular weight and the weight average molecular weight of a polymer sample made of polystyrene with a repeat unit of (CH2- CH(CHs)) and composed of two types of chains. 60 percent of the chains have a degree of polymerization of 7,000 and the rest 50,000. Carbon has an atomic weight of 12 g/mol and hydrogen is 1 g/mol.