24 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Unstable potassium oxide reacts with water vapor in the air to produce potassium hydroxide:
K2O + H2O → KOH
What, if anything, should be done to balance this chemical equation?
A. Nothing. It is balanced.
B. Put a "2" in front of the KOH.
C. Put a "4" in front of the KOH.
D. Put ".5" in front of both K2O and H2O.