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Author Question: The two most abundant elements in Earth's crust are A) silicates and carbonates. B) silicon and ... (Read 83 times)

plus1

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on: Jul 29, 2018
The two most abundant elements in Earth's crust are
 
  A) silicates and carbonates.
  B) silicon and oxygen.
  C) oxygen and aluminum.
  D) quartz and feldspar.

Question 2

The copolymer styrene-butadiene rubber (SBR), shown below, is used for making tires as well as bubble gum. Is it an addition polymer or a condensation polymer?
 
  A) SBR is an addition polymer.
  B) SBR is an condensation polymer.
  C) SBR is neither an addition nor a condensation polymer.
  D) SBR is both an addition and a condensation polymer.


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tmlewis4706

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

Answer: B

Answer to Question 2

Answer: A


plus1

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Reply #2 on: Jul 29, 2018
Thank you!


tmlewis4706

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Reply #3 on: Jul 29, 2018
Always glad to help...


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