Author Question: The configurations of stereogenic centers in an atactic polymer are: A) regular B) random C) ... (Read 241 times)

TFauchery

  • Hero Member
  • *****
  • Posts: 500
The configurations of stereogenic centers in an atactic polymer are:
  A)
  regular
  B)
  random
  C)
  alternate
  D)
  the same
  E)
  opposite

Question 2

An intermediate in the free radical polymerization of propylene (CH2=CHCH3) initiated by benzoyl peroxide C6H5C(=O)OOC(=O)C6H5 is:
  A)
 
  B)
 
  C)
 
  D)
 
  E)
 

Question 3

The step responsible for chain-branching in free-radical polymerizations is the
  A)
  initiation step.
  B)
  radical coupling.
  C)
  radical disproportionation.
  D)
  chain transfer.
  E)
  radical addition.



miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Answer to Question 1

b

Answer to Question 2

b

Answer to Question 3

d



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

For a complete list of videos, visit our video library