Answer:
hr
Explanation:
cfy.uhy.lobhyu444444444,.....xres;iiiiiiiiiiiuxoppppuuusxijnnhsxdrcfvtgbyhnuj
oxidation reaction
Explanation:
2 Na2O → 4 Na + O2
This is an oxidation-reduction (redox) reaction:
4 NaI + 4 e- → 4 Na0(reduction)
2 O-II - 4 e- → 2 O0(oxidation)
Na2O is an oxidizing agent, Na2O is a reducing agent.
(doesn't really matter that it's zinc :) )
It is

, where

(in some books 6.022).
That answer for that question is B
Na2S
Na is a metal, S is a non-metal, so Na2S is an ionic compound.