Calculate the molarity of PMDA using the results of each standardization titration. Compute the molarity of PMDA from the mass of reagent used to make the PMDA stock solution. Compare these values and determine the percent purity of the solid reagent. Please provide steps with explanations. Results are in the Excel spreads
1. Why a polymer such as polybutadiene can be cross-linked, however a polymer such as polyethylene cannot be cross-linked. Please make reference to what it is about the chemistry of the repeating units that allows for the formation of cross-links. 2. Car tires are made of vulcanized rubber, which is a crosslinked polymer form
1. POYSTYRENE: The monomer structure of polystyrene is shown attached. a) Would you expect polystyrene to be a stiff or a pliable polymer? b) What kind of synthesis is used in the production of polystyrene from styrene monomers? Addition polymerization, condensation polymerizaton or anionic polymerization? c) Calculate the d
I have attached 4 images for you to take a look at: 1) the chem structure of cellulose; 2) the chem structure of phenol-formaldehyde adhesive resin -- you will have to add NaOH to this structure since it is catalyzed with NaOH); 3) the chem structure of polymeric methylene diphenyl diisocyanate resin; and finally, 4) the chem st
Explain using chemical structures why polyethylene synthesized by free radical polymerization is not a high-performance material (e.g. mostly used for supermarket bags and similar cheap commodities ).
Discuss second order non-linear optical (NLO) behaviour in polymers?
1. PET is the most valuable plastic at the present time. Suggest a way to separate it from the others at a plastic recycling center. 2. Since waste plastics are mostly hydrocarbons, it has been suggested that waste plastic be used as fuel. From your observations, is this a reasonable suggestion. Defend your answer. 3. Su
Explain the difference between polymers and monomers in 150 words give examples Write down the structure of a protein with four building blocks.
What are three factors operating at a molecular level that affect the bulk properties of a plastic?
Write a mechanism to show how branching occurred in the polymerization of 1,3-butadiene to yield the polymer shown (the polymer is attached).
What monomer when addition polymerized will produce the following polymer? Please see the attachment below.