Answer:
Sodium oxide + Water - - - > Sodium Hydroxide.
The pH meter measure the concentration of the hydrogen(+) ion, and the concentration of Hydroxide(-). Hydrogen is acidic, Hydroxide is basic.
The answer is D.
Answer:
red supergiants is the answer
PH + pOH = 14
pOH=14-8=4
(OH-)=10^-4