Calculate the molecular weight of CuBr(PPh3)3
Polymers principles Given the following information, calculate the number-average molecular weight, the weight-average molecular weight, and the molecular weight distribution:
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.
7. Please calculate the number-averaged molecular weight and weight-averaged molecular weight for the following polymer. (6 pt) Fraction Mass(g) Mx 104(g/mol)1.24 1.521.361.282.301.504.28 1.21 1181.4567 0.23 0.18 0.56 0.82 3.76 8. A student mixed two batches of PS accidently in the lab, what would be number-averaged molecular weight and weight-averaged molecular weight for this PS mixture. (6 pt) Batch Mass(g) Mw (g/mol) Mn (g/mol 15 75,000 50,000 150,000 120,000
molecular weight 98.159 Collio o CooH FO HNO3 Calculate the % yield, 0,872 a molecular weight Collio o .98.159 To things Calculate the % yield 0.872 g > [coort 0.059
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.
Calculate the molecular weight of thymidylate at pH 7. (Please give me the molecular formula for thymidylate at pH 7). Thank you!
Calculate the number-average molecular weight of a random nitrile rubber [poly(acrylonitrile-butadiene) copolymer] in which the fraction of butadiene repeat units is 0.32; assume that this concentration corresponds to a degree of polymerization of 2030. Calculate the molecular weight of the acrylonitrile repeat unit in g/mol. Part 2 Calculate the molecular weight of the butadiene repeat unit in g/mol. Part 3 Calculate the average molecular weight of the copolymer repeat unit in g/mol. Click here to access Table 4.5. m =...
Calculate the molecular weight of a substance. In which the solution of this substance in the water has a concentration of 7 percent by weight, has a freezing point Equal to -0.89 ° C, set Kf value of water = 1.86 ° C / m
Calculate the molecular weight of an ethylene molecule with a degree of polymerization of 500.
750 mt 2. Calculate the molecular weight of Freon-12, if 122.70 liters of its vapor at 200.00 C and 790.00 mm Hg has a mass of 397.00 g. Show your work. 3. Suppose a student performs this experiment and obtains a molecular weight of 70 g/mol for isopropyl alcohol. Give valid sources of error for what could have caused the molecular weight to be higher than expected. 4. Suppose a student performs this experiment and obtains a molecular weight of...