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Author Question: What is the main difference between High Density PolyEtyhlene (HDPE) and Low Density ... (Read 178 times)

viki

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on: Jul 29, 2018
What is the main difference between High Density PolyEtyhlene (HDPE) and Low Density PolyEthylene(LDPE)?
 
  A) HDPE has very long chains packed close together; LDPE has long chains that are branched and do not pack together well.
  B) One is made from high density ethylene, the other from low density ethylene.
  C) HDPE has very long chains packed close together; LDPE has short chains that do not pack together well.
  D) HDPE is more useful than LDPE.
  E) LDPE is more useful than HDPE.

Question 2

What is one thing that all monomers of addition polymers have in common?
 
  A) The monomer has to have at least one double bond.
  B) The monomer has to have at least two functional groups (though they can be the same).
  C) The monomer has to have at least two functional groups (though they must be the different).
  D) The monomer has to be very small.
  E) The monomer has to have a number of polymer components.


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kaykay69

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: A


viki

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Reply 2 on: Jul 29, 2018
Excellent

nguyenhoanhat

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Reply 3 on: Yesterday
Wow, this really help

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