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Does ethylene polymerize under mild conditions in the absence of a catalyst? : Polymer Chemistry
1247Consider the polymerization of vinylidene chloride, ch2=ccl2. What structural variations are possible in poly(vinylidene chloride)? : Polymer Chemistry
1513How can chemists control which type of polyethylene (ldpe vs. Hdpe) is generated? : Polymer Chemistry
1739Head-to-tail polymerization of propylene is observed with the [cp2zr(r)]+ catalyst. Explain this result on the basis of molecular-level interactions. : Polymer Chemistry
1023Besides the extent of branching, can you think of any other structural parameters that might lead to differences in physical properties? : Polymer Chemistry
1311What kinds of structural changes accompany bond-breaking and bond-forming in olefin polymerization? : Polymer Chemistry
1828What are the other ways in which chemists can manipulate the properties of polymers? : Polymer Chemistry
1192How does the molecular-level structure of these polymers influence their physical properties? : Polymer Chemistry
1 2142Examine samples of ldpe (sandwich bag, squeeze bottle) and hdpe (milk jug, grocery bag). What are some of the differences in the physical properties of these substances? : Polymer Chemistry
1188A polymer's structure influences its physical properties. Describe two structural variations that are possible for polypropylene but not for polyethylene. : Polymer Chemistry
1111What are some of the polymers that you encounter every day? Describe their physical properties. : Polymer Chemistry
1134Atactic polypropylene is always produced with the [cp2zr(r)]+ catalyst. Explain this on the basis of molecular-level interactions. : Polymer Chemistry
1101What is the difference between a heterogeneous and a homogeneous catalyst? What are some of the advantages of homogeneous catalysts? : Polymer Chemistry
1016Post New Chemistry AllOther Questions
Define electro plating and electroless plating? : Electrochemistry Corrosion
How are atoms of the isotopes different from one another? Two isotopes of carbon are carbon-12 and carbon-14.
What is the role of a catalyst? : Polymer Chemistry
Define chemical corrosion. What are the types of chemical corrosion? : Electrochemistry Corrosion
What does it mean for a molecule or a ligand to be "chiral"? What properties does chirality impart to a molecule? : Polymer Chemistry
What is the process for the removal of salts from brackish water or seawater to make it usable?
Define a hydrogen bond?
Explain what is meant by "c2 symmetry" and "mirror plane symmetry". Can a molecule with "mirror plane symmetry" ever be chiral? : Polymer Chemistry
What are some of the polymers that you encounter every day? Describe their physical properties. : Polymer Chemistry
Why are metals often good catalysts? : Polymer Chemistry
Define dipole moment?
Explain how do you extract ephedrine from a mineral block?
Define oxidation potential and reduction potential? : Electrochemistry Corrosion
Name the molecule which is characteristically prevalent in sour milk and tired muscles?
What are the types of corrosion? : Electrochemistry Corrosion
