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Author Question: All of the following statements about biodegradable polymers are true EXCEPT A) some can ... (Read 145 times)

go.lag

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on: Aug 27, 2018
All of the following statements about biodegradable polymers are true EXCEPT
 
  A) some can biodegrade by composting.
  B) the most sustainable approach is to use renewable resources, especially non-food crops, as a monomer source.
  C) their glass transition temperatures are very high.
  D) many require microorganisms to degrade them.

Question 2

Quaternary salts with two long carbon chains and two smaller chains on the nitrogen are used as
 
  A) bleaches.
  B) analgesics.
  C) fabric softeners.
  D) weed killers.


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efwsefaw

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Reply #1 on: Aug 27, 2018
Answer to Question 1

A

Answer to Question 2

C


go.lag

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Reply 2 on: Aug 27, 2018
Gracias!

xiaomengxian

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Reply 3 on: Yesterday
Excellent

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