Author Question: In a battery, the following oxidation-reduction reaction is taking place: Mn2O3 + ZnO 2 MnO2 + ... (Read 60 times)

Zoey63294 · **on:** Aug 27, 2018

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.