Which sulfide is insoluble in water? A) lead (II) sulfide B) ...

[Yi-Chen]

Which sulfide is insoluble in water?
 
  A) lead (II) sulfide
  B) potassium sulfide
  C) ammonium sulfide
  D) sodium sulfide

Question 2

This factor depends on concentration and can be manipulated.
 
  A) the total number of collisions that occur per unit time
  B) the fraction of collisions with energy larger than the energy of activation
  C) the fraction of collisions with the proper orientation
  D) All of the above are correct.

[orangecrush]

Answer to Question 1

A

Answer to Question 2

A

[Yi-Chen]

Excellent

[elyse44]

Thanks for the timely response, appreciate it