What percentage of the solar nebula's mass consisted of rocky ...

[ishan]

What percentage of the solar nebula's mass consisted of rocky material?
 
  A) 0 percent
  B) 0.4 percent
  C) 2 percent
  D) 20 percent
  E) 80 percent

Question 2

What percentage of the solar nebula's mass consisted of hydrogen and helium gases?
 
  A) 0.5 percent
  B) 5 percent
  C) 50 percent
  D) 98 percent
  E) 100 percent

[Kimmy]

Answer to Question 1

B

Answer to Question 2

D