In a battery, the following oxidation-reduction reaction is ...

[Zoey63294]

In a battery, the following oxidation-reduction reaction is taking place:
 
  Mn2O3 + ZnO  2 MnO2 + Zn
 
  What is undergoing reduction as written?
  A) Zn
  B) ZnO
  C) MnO2
  D) Mn2O3
  E) none of the above

Question 2

Why doesn't uranium ore spontaneously undergo a chain reaction?
 
  A) Uranium ore must be weapons' grade in order for it to undergo chain reaction.
  B) Uranium ore is mostly non-fissionable isotope U-238.
  C) Uranium ore does spontaneously undergo slow chain reaction over time finally resulting in it becoming lead.
  D) Uranium ore, mostly U-235, must be enriched with U-238 in order for it to undergo a chain reaction.

[Jane]

Answer to Question 1

B

Answer to Question 2

B

[Zoey63294]

TYSM

[blakcmamba]

Excellent